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This commit is contained in:
Thomas Harte 2023-08-19 15:57:37 -04:00
commit 90f16026bc
442 changed files with 143549 additions and 14619 deletions
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2
.github/workflows/ccpp.yml vendored
View File

@ -8,7 +8,7 @@ jobs:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- uses: actions/checkout@v3
- name: Install dependencies
run: sudo apt-get --allow-releaseinfo-change update && sudo apt-get --fix-missing install libsdl2-dev scons
- name: Make

1
Activity/Observer.hpp
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@ -9,6 +9,7 @@
#ifndef ActivityObserver_h
#define ActivityObserver_h
#include <cstdint>
#include <string>
namespace Activity {

4
Analyser/Dynamic/ConfidenceCounter.hpp
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@ -11,8 +11,7 @@
#include "ConfidenceSource.hpp"
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Provides a confidence source that calculates its probability by virtual of a history of events.
@ -41,7 +40,6 @@ class ConfidenceCounter: public ConfidenceSource {
int misses_ = 1;
};
}
}
#endif /* ConfidenceCounter_hpp */

4
Analyser/Dynamic/ConfidenceSource.hpp
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@ -9,8 +9,7 @@
#ifndef ConfidenceSource_hpp
#define ConfidenceSource_hpp
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Provides an abstract interface through which objects can declare the probability
@ -22,7 +21,6 @@ struct ConfidenceSource {
virtual float get_confidence() = 0;
};
}
}
#endif /* ConfidenceSource_hpp */

4
Analyser/Dynamic/ConfidenceSummary.hpp
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@ -13,8 +13,7 @@
#include <vector>
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Summaries a collection of confidence sources by calculating their weighted sum.
@ -40,7 +39,6 @@ class ConfidenceSummary: public ConfidenceSource {
float weight_sum_;
};
}
}
#endif /* ConfidenceSummary_hpp */

4
Analyser/Dynamic/MultiMachine/Implementation/MultiConfigurable.hpp
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@ -15,8 +15,7 @@
#include <memory>
#include <vector>
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Provides a class that multiplexes the configurable interface to multiple machines.
@ -36,7 +35,6 @@ class MultiConfigurable: public Configurable::Device {
std::vector<Configurable::Device *> devices_;
};
}
}
#endif /* MultiConfigurable_hpp */

4
Analyser/Dynamic/MultiMachine/Implementation/MultiJoystickMachine.hpp
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@ -14,8 +14,7 @@
#include <memory>
#include <vector>
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Provides a class that multiplexes the joystick machine interface to multiple machines.
@ -34,7 +33,6 @@ class MultiJoystickMachine: public MachineTypes::JoystickMachine {
std::vector<std::unique_ptr<Inputs::Joystick>> joysticks_;
};
}
}
#endif /* MultiJoystickMachine_hpp */

4
Analyser/Dynamic/MultiMachine/Implementation/MultiKeyboardMachine.hpp
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@ -15,8 +15,7 @@
#include <memory>
#include <vector>
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Provides a class that multiplexes the keyboard machine interface to multiple machines.
@ -55,7 +54,6 @@ class MultiKeyboardMachine: public MachineTypes::KeyboardMachine {
Inputs::Keyboard &get_keyboard() final;
};
}
}
#endif /* MultiKeyboardMachine_hpp */

4
Analyser/Dynamic/MultiMachine/Implementation/MultiMediaTarget.hpp
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@ -15,8 +15,7 @@
#include <memory>
#include <vector>
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Provides a class that multiplexes the media target interface to multiple machines.
@ -35,7 +34,6 @@ struct MultiMediaTarget: public MachineTypes::MediaTarget {
std::vector<MachineTypes::MediaTarget *> targets_;
};
}
}
#endif /* MultiMediaTarget_hpp */

5
Analyser/Dynamic/MultiMachine/Implementation/MultiProducer.hpp
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@ -19,8 +19,7 @@
#include <mutex>
#include <vector>
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
template <typename MachineType> class MultiInterface {
public:
@ -116,7 +115,5 @@ class MultiAudioProducer: public MultiInterface<MachineTypes::AudioProducer>, pu
*/
}
}
#endif /* MultiProducer_hpp */

4
Analyser/Dynamic/MultiMachine/Implementation/MultiSpeaker.hpp
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@ -16,8 +16,7 @@
#include <mutex>
#include <vector>
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Provides a class that multiplexes calls to and from Outputs::Speaker::Speaker in order
@ -55,7 +54,6 @@ class MultiSpeaker: public Outputs::Speaker::Speaker, Outputs::Speaker::Speaker:
bool stereo_output_ = false;
};
}
}
#endif /* MultiSpeaker_hpp */

4
Analyser/Dynamic/MultiMachine/MultiMachine.hpp
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@ -22,8 +22,7 @@
#include <mutex>
#include <vector>
namespace Analyser {
namespace Dynamic {
namespace Analyser::Dynamic {
/*!
Provides the same interface as to a single machine, while multiplexing all
@ -80,7 +79,6 @@ class MultiMachine: public ::Machine::DynamicMachine, public MultiTimedMachine::
bool has_picked_ = false;
};
}
}
#endif /* MultiMachine_hpp */

6
Analyser/Static/Acorn/Disk.hpp
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@ -12,9 +12,7 @@
#include "File.hpp"
#include "../../../Storage/Disk/Disk.hpp"
namespace Analyser {
namespace Static {
namespace Acorn {
namespace Analyser::Static::Acorn {
/// Describes a DFS- or ADFS-format catalogue(/directory): the list of files available and the catalogue's boot option.
struct Catalogue {
@ -31,8 +29,6 @@ struct Catalogue {
std::unique_ptr<Catalogue> GetDFSCatalogue(const std::shared_ptr<Storage::Disk::Disk> &disk);
std::unique_ptr<Catalogue> GetADFSCatalogue(const std::shared_ptr<Storage::Disk::Disk> &disk);
}
}
}
#endif /* Disk_hpp */

6
Analyser/Static/Acorn/File.hpp
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@ -13,9 +13,7 @@
#include <string>
#include <vector>
namespace Analyser {
namespace Static {
namespace Acorn {
namespace Analyser::Static::Acorn {
struct File {
std::string name;
@ -60,8 +58,6 @@ struct File {
std::vector<Chunk> chunks;
};
}
}
}
#endif /* File_hpp */

6
Analyser/Static/Acorn/StaticAnalyser.hpp
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@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Acorn {
namespace Analyser::Static::Acorn {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* AcornAnalyser_hpp */

2
Analyser/Static/Acorn/Tape.cpp
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@ -20,7 +20,7 @@ static std::unique_ptr<File::Chunk> GetNextChunk(const std::shared_ptr<Storage::
int shift_register = 0;
// TODO: move this into the parser
#define shift() shift_register = (shift_register >> 1) | (parser.get_next_bit(tape) << 9)
#define shift() shift_register = (shift_register >> 1) | (parser.get_next_bit(tape) << 9)
// find next area of high tone
while(!tape->is_at_end() && (shift_register != 0x3ff)) {

6
Analyser/Static/Acorn/Tape.hpp
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@ -14,14 +14,10 @@
#include "File.hpp"
#include "../../../Storage/Tape/Tape.hpp"
namespace Analyser {
namespace Static {
namespace Acorn {
namespace Analyser::Static::Acorn {
std::vector<File> GetFiles(const std::shared_ptr<Storage::Tape::Tape> &tape);
}
}
}
#endif /* Tape_hpp */

6
Analyser/Static/Acorn/Target.hpp
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@ -13,9 +13,7 @@
#include "../StaticAnalyser.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Acorn {
namespace Analyser::Static::Acorn {
struct Target: public ::Analyser::Static::Target, public Reflection::StructImpl<Target> {
bool has_acorn_adfs = false;
@ -37,8 +35,6 @@ struct Target: public ::Analyser::Static::Target, public Reflection::StructImpl<
}
};
}
}
}
#endif /* Analyser_Static_Acorn_Target_h */

7
Analyser/Static/Amiga/StaticAnalyser.hpp
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@ -13,15 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Amiga {
namespace Analyser::Static::Amiga {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* Analyser_Static_Amiga_StaticAnalyser_hpp */

6
Analyser/Static/Amiga/Target.hpp
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@ -12,9 +12,7 @@
#include "../../../Reflection/Struct.hpp"
#include "../StaticAnalyser.hpp"
namespace Analyser {
namespace Static {
namespace Amiga {
namespace Analyser::Static::Amiga {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(ChipRAM,
@ -41,8 +39,6 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
}
}
}
#endif /* Analyser_Static_Amiga_Target_h */

6
Analyser/Static/AmstradCPC/StaticAnalyser.hpp
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@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace AmstradCPC {
namespace Analyser::Static::AmstradCPC {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* Analyser_Static_AmstradCPC_StaticAnalyser_hpp */

7
Analyser/Static/AmstradCPC/Target.hpp
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@ -14,9 +14,7 @@
#include "../StaticAnalyser.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace AmstradCPC {
namespace Analyser::Static::AmstradCPC {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(Model, CPC464, CPC664, CPC6128);
@ -32,8 +30,5 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
};
}
}
}
#endif /* Analyser_Static_AmstradCPC_Target_h */

6
Analyser/Static/AppleII/StaticAnalyser.hpp
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@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace AppleII {
namespace Analyser::Static::AppleII {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* Analyser_Static_AppleII_StaticAnalyser_hpp */

6
Analyser/Static/AppleII/Target.hpp
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@ -13,9 +13,7 @@
#include "../../../Reflection/Struct.hpp"
#include "../StaticAnalyser.hpp"
namespace Analyser {
namespace Static {
namespace AppleII {
namespace Analyser::Static::AppleII {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(Model,
@ -51,8 +49,6 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
}
}
}
#endif /* Analyser_Static_AppleII_Target_h */

6
Analyser/Static/AppleIIgs/StaticAnalyser.hpp
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@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace AppleIIgs {
namespace Analyser::Static::AppleIIgs {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* Analyser_Static_AppleIIgs_StaticAnalyser_hpp */

6
Analyser/Static/AppleIIgs/Target.hpp
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@ -13,9 +13,7 @@
#include "../../../Reflection/Struct.hpp"
#include "../StaticAnalyser.hpp"
namespace Analyser {
namespace Static {
namespace AppleIIgs {
namespace Analyser::Static::AppleIIgs {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(Model,
@ -42,8 +40,6 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
}
}
}
#endif /* Analyser_Static_AppleIIgs_Target_h */

6
Analyser/Static/Atari2600/StaticAnalyser.hpp
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@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Atari2600 {
namespace Analyser::Static::Atari2600 {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* StaticAnalyser_hpp */

6
Analyser/Static/Atari2600/Target.hpp
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@ -11,9 +11,7 @@
#include "../StaticAnalyser.hpp"
namespace Analyser {
namespace Static {
namespace Atari2600 {
namespace Analyser::Static::Atari2600 {
struct Target: public ::Analyser::Static::Target {
enum class PagingModel {
@ -38,8 +36,6 @@ struct Target: public ::Analyser::Static::Target {
Target() : Analyser::Static::Target(Machine::Atari2600) {}
};
}
}
}
#endif /* Analyser_Static_Atari_Target_h */

7
Analyser/Static/AtariST/StaticAnalyser.hpp
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@ -13,15 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace AtariST {
namespace Analyser::Static::AtariST {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* Analyser_Static_AtariST_StaticAnalyser_hpp */

6
Analyser/Static/AtariST/Target.hpp
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@ -12,9 +12,7 @@
#include "../../../Reflection/Struct.hpp"
#include "../StaticAnalyser.hpp"
namespace Analyser {
namespace Static {
namespace AtariST {
namespace Analyser::Static::AtariST {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(MemorySize,
@ -31,8 +29,6 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
}
}
}
#endif /* Analyser_Static_AtariST_Target_h */

6
Analyser/Static/Coleco/StaticAnalyser.hpp
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@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Coleco {
namespace Analyser::Static::Coleco {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* StaticAnalyser_hpp */

6
Analyser/Static/Commodore/Disk.hpp
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@ -14,14 +14,10 @@
#include <vector>
namespace Analyser {
namespace Static {
namespace Commodore {
namespace Analyser::Static::Commodore {
std::vector<File> GetFiles(const std::shared_ptr<Storage::Disk::Disk> &disk);
}
}
}
#endif /* Disk_hpp */

7
Analyser/Static/Commodore/File.hpp
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@ -9,12 +9,11 @@
#ifndef File_hpp
#define File_hpp
#include <cstdint>
#include <string>
#include <vector>
namespace Analyser {
namespace Static {
namespace Commodore {
namespace Analyser::Static::Commodore {
struct File {
std::wstring name;
@ -35,8 +34,6 @@ struct File {
bool is_basic();
};
}
}
}
#endif /* File_hpp */

6
Analyser/Static/Commodore/StaticAnalyser.cpp
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@ -93,7 +93,7 @@ Analyser::Static::TargetList Analyser::Static::Commodore::GetTargets(const Media
// make a first guess based on loading address
switch(files.front().starting_address) {
default:
LOG("Unrecognised loading address for Commodore program: " << PADHEX(4) << files.front().starting_address);
LOG("Unrecognised loading address for Commodore program: " << PADHEX(4) << files.front().starting_address);
[[fallthrough]];
case 0x1001:
memory_model = Target::MemoryModel::Unexpanded;
@ -188,8 +188,8 @@ Analyser::Static::TargetList Analyser::Static::Commodore::GetTargets(const Media
// Unhandled:
//
// M6: this is a C64 file.
// MV: this is a Vic-20 file.
// M6: this is a C64 file.
// MV: this is a Vic-20 file.
// J1/J2: this C64 file should have the primary joystick in slot 1/2.
// RO: this disk image should be treated as read-only.
}

6
Analyser/Static/Commodore/StaticAnalyser.hpp
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@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Commodore {
namespace Analyser::Static::Commodore {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* CommodoreAnalyser_hpp */

6
Analyser/Static/Commodore/Tape.hpp
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@ -12,14 +12,10 @@
#include "../../../Storage/Tape/Tape.hpp"
#include "File.hpp"
namespace Analyser {
namespace Static {
namespace Commodore {
namespace Analyser::Static::Commodore {
std::vector<File> GetFiles(const std::shared_ptr<Storage::Tape::Tape> &tape);
}
}
}
#endif /* Tape_hpp */

6
Analyser/Static/Commodore/Target.hpp
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@ -14,9 +14,7 @@
#include "../StaticAnalyser.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Commodore {
namespace Analyser::Static::Commodore {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
enum class MemoryModel {
@ -71,8 +69,6 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
}
}
}
#endif /* Analyser_Static_Commodore_Target_h */

2
Analyser/Static/Disassembler/6502.cpp
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@ -11,7 +11,7 @@
#include "Kernel.hpp"
using namespace Analyser::Static::MOS6502;
namespace {
namespace {
using PartialDisassembly = Analyser::Static::Disassembly::PartialDisassembly<Disassembly, uint16_t>;

6
Analyser/Static/Disassembler/6502.hpp
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@ -16,9 +16,7 @@
#include <set>
#include <vector>
namespace Analyser {
namespace Static {
namespace MOS6502 {
namespace Analyser::Static::MOS6502 {
/*!
Describes a 6502 instruciton: its address, the operation it performs, its addressing mode
@ -95,7 +93,5 @@ Disassembly Disassemble(
std::vector<uint16_t> entry_points);
}
}
}
#endif /* Disassembler6502_hpp */

6
Analyser/Static/Disassembler/AddressMapper.hpp
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@ -11,9 +11,7 @@
#include <functional>
namespace Analyser {
namespace Static {
namespace Disassembler {
namespace Analyser::Static::Disassembler {
/*!
Provides an address mapper that relocates a chunk of memory so that it starts at
@ -25,8 +23,6 @@ template <typename T> std::function<std::size_t(T)> OffsetMapper(T start_address
};
}
}
}
}
#endif /* AddressMapper_hpp */

6
Analyser/Static/Disassembler/Kernel.hpp
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@ -9,9 +9,7 @@
#ifndef Kernel_hpp
#define Kernel_hpp
namespace Analyser {
namespace Static {
namespace Disassembly {
namespace Analyser::Static::Disassembly {
template <typename D, typename S> struct PartialDisassembly {
D disassembly;
@ -45,8 +43,6 @@ template <typename D, typename S, typename Disassembler> D Disassemble(
return partial_disassembly.disassembly;
}
}
}
}
#endif /* Kernel_hpp */

2
Analyser/Static/Disassembler/Z80.cpp
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@ -11,7 +11,7 @@
#include "Kernel.hpp"
using namespace Analyser::Static::Z80;
namespace {
namespace {
using PartialDisassembly = Analyser::Static::Disassembly::PartialDisassembly<Disassembly, uint16_t>;

6
Analyser/Static/Disassembler/Z80.hpp
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@ -15,9 +15,7 @@
#include <set>
#include <vector>
namespace Analyser {
namespace Static {
namespace Z80 {
namespace Analyser::Static::Z80 {
struct Instruction {
/*! The address this instruction starts at. This is a mapped address. */
@ -84,7 +82,5 @@ Disassembly Disassemble(
std::vector<uint16_t> entry_points);
}
}
}
#endif /* StaticAnalyser_Disassembler_Z80_hpp */

7
Analyser/Static/DiskII/StaticAnalyser.hpp
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@ -13,15 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace DiskII {
namespace Analyser::Static::DiskII {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* Analyser_Static_DiskII_StaticAnalyser_hpp */

7
Analyser/Static/Enterprise/StaticAnalyser.hpp
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@ -13,15 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Enterprise {
namespace Analyser::Static::Enterprise {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* Analyser_Static_Enterprise_StaticAnalyser_hpp */

6
Analyser/Static/Enterprise/Target.hpp
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@ -15,9 +15,7 @@
#include <string>
namespace Analyser {
namespace Static {
namespace Enterprise {
namespace Analyser::Static::Enterprise {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(Model, Enterprise64, Enterprise128, Enterprise256);
@ -50,8 +48,6 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
}
}
}
#endif /* Analyser_Static_Enterprise_Target_h */

6
Analyser/Static/MSX/Cartridge.hpp
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@ -11,9 +11,7 @@
#include "../../../Storage/Cartridge/Cartridge.hpp"
namespace Analyser {
namespace Static {
namespace MSX {
namespace Analyser::Static::MSX {
/*!
Extends the base cartridge class by adding a (guess at) the banking scheme.
@ -33,8 +31,6 @@ struct Cartridge: public ::Storage::Cartridge::Cartridge {
Storage::Cartridge::Cartridge(segments), type(type) {}
};
}
}
}
#endif /* Cartridge_hpp */

6
Analyser/Static/MSX/StaticAnalyser.cpp
View File

@ -37,6 +37,11 @@ static std::unique_ptr<Analyser::Static::Target> CartridgeTarget(
auto target = std::make_unique<Analyser::Static::MSX::Target>();
target->confidence = confidence;
// Observation: all ROMs of 48kb or less are from the MSX 1 era.
if(segment.data.size() < 48*1024) {
target->model = Analyser::Static::MSX::Target::Model::MSX1;
}
if(type == Analyser::Static::MSX::Cartridge::Type::None) {
target->media.cartridges.emplace_back(new Storage::Cartridge::Cartridge(output_segments));
} else {
@ -100,6 +105,7 @@ static Analyser::Static::TargetList CartridgeTargetsFrom(
// TODO: check for a rational init address?
// If this ROM is less than 48kb in size then it's an ordinary ROM. Just emplace it and move on.
// Bonus observation: all such ROMs are from the MSX 1 era.
if(data_size <= 0xc000) {
targets.emplace_back(CartridgeTarget(segment, start_address, Analyser::Static::MSX::Cartridge::Type::None, 1.0));
continue;

6
Analyser/Static/MSX/StaticAnalyser.hpp
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@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace MSX {
namespace Analyser::Static::MSX {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* StaticAnalyser_MSX_StaticAnalyser_hpp */

6
Analyser/Static/MSX/Tape.hpp
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@ -14,9 +14,7 @@
#include <string>
#include <vector>
namespace Analyser {
namespace Static {
namespace MSX {
namespace Analyser::Static::MSX {
struct File {
std::string name;
@ -37,8 +35,6 @@ struct File {
std::vector<File> GetFiles(const std::shared_ptr<Storage::Tape::Tape> &tape);
}
}
}
#endif /* StaticAnalyser_MSX_Tape_hpp */

16
Analyser/Static/MSX/Target.hpp
View File

@ -14,14 +14,19 @@
#include "../StaticAnalyser.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace MSX {
namespace Analyser::Static::MSX {
struct Target: public ::Analyser::Static::Target, public Reflection::StructImpl<Target> {
bool has_disk_drive = false;
bool has_msx_music = true;
std::string loading_command;
ReflectableEnum(Model,
MSX1,
MSX2
);
Model model = Model::MSX2;
ReflectableEnum(Region,
Japan,
USA,
@ -32,14 +37,15 @@ struct Target: public ::Analyser::Static::Target, public Reflection::StructImpl<
Target(): Analyser::Static::Target(Machine::MSX) {
if(needs_declare()) {
DeclareField(has_disk_drive);
DeclareField(has_msx_music);
DeclareField(region);
AnnounceEnum(Region);
DeclareField(model);
AnnounceEnum(Model);
}
}
};
}
}
}
#endif /* Analyser_Static_MSX_Target_h */

7
Analyser/Static/Macintosh/StaticAnalyser.hpp
View File

@ -13,15 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Macintosh {
namespace Analyser::Static::Macintosh {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* Analyser_Static_Macintosh_StaticAnalyser_hpp */

6
Analyser/Static/Macintosh/Target.hpp
View File

@ -13,9 +13,7 @@
#include "../../../Reflection/Struct.hpp"
#include "../StaticAnalyser.hpp"
namespace Analyser {
namespace Static {
namespace Macintosh {
namespace Analyser::Static::Macintosh {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(Model, Mac128k, Mac512k, Mac512ke, MacPlus);
@ -30,8 +28,6 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
}
}
}
#endif /* Analyser_Static_Macintosh_Target_h */

6
Analyser/Static/Oric/StaticAnalyser.hpp
View File

@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Oric {
namespace Analyser::Static::Oric {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* StaticAnalyser_hpp */

6
Analyser/Static/Oric/Tape.hpp
View File

@ -14,9 +14,7 @@
#include <string>
#include <vector>
namespace Analyser {
namespace Static {
namespace Oric {
namespace Analyser::Static::Oric {
struct File {
std::string name;
@ -33,8 +31,6 @@ struct File {
std::vector<File> GetFiles(const std::shared_ptr<Storage::Tape::Tape> &tape);
}
}
}
#endif /* Tape_hpp */

6
Analyser/Static/Oric/Target.hpp
View File

@ -14,9 +14,7 @@
#include "../StaticAnalyser.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Oric {
namespace Analyser::Static::Oric {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(ROM,
@ -56,8 +54,6 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
}
}
}
#endif /* Analyser_Static_Oric_Target_h */

6
Analyser/Static/Sega/StaticAnalyser.hpp
View File

@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace Sega {
namespace Analyser::Static::Sega {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* StaticAnalyser_hpp */

10
Analyser/Static/Sega/Target.hpp
View File

@ -13,9 +13,7 @@
#include "../../../Reflection/Struct.hpp"
#include "../StaticAnalyser.hpp"
namespace Analyser {
namespace Static {
namespace Sega {
namespace Analyser::Static::Sega {
struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Target> {
enum class Model {
@ -48,10 +46,10 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
}
};
#define is_master_system(v) v >= Analyser::Static::Sega::Target::Model::MasterSystem
constexpr bool is_master_system(Analyser::Static::Sega::Target::Model model) {
return model >= Analyser::Static::Sega::Target::Model::MasterSystem;
}
}
}
}
#endif /* Analyser_Static_Sega_Target_h */

5
Analyser/Static/StaticAnalyser.cpp
View File

@ -59,6 +59,7 @@
// Mass Storage Devices (i.e. usually, hard disks)
#include "../../Storage/MassStorage/Formats/DAT.hpp"
#include "../../Storage/MassStorage/Formats/DSK.hpp"
#include "../../Storage/MassStorage/Formats/HDV.hpp"
#include "../../Storage/MassStorage/Formats/HFV.hpp"
// State Snapshots
@ -170,6 +171,7 @@ static Media GetMediaAndPlatforms(const std::string &file_name, TargetPlatform::
Format("dsk", result.disks, Disk::DiskImageHolder<Storage::Disk::FAT12>, TargetPlatform::MSX) // DSK (MSX)
Format("dsk", result.disks, Disk::DiskImageHolder<Storage::Disk::OricMFMDSK>, TargetPlatform::Oric) // DSK (Oric)
Format("g64", result.disks, Disk::DiskImageHolder<Storage::Disk::G64>, TargetPlatform::Commodore) // G64
Format("hdv", result.mass_storage_devices, MassStorage::HDV, TargetPlatform::AppleII) // HDV (Apple II, hard disk, single volume image)
Format( "hfe",
result.disks,
Disk::DiskImageHolder<Storage::Disk::HFE>,
@ -183,6 +185,7 @@ static Media GetMediaAndPlatforms(const std::string &file_name, TargetPlatform::
Disk::DiskImageHolder<Storage::Disk::IPF>,
TargetPlatform::Amiga | TargetPlatform::AtariST | TargetPlatform::AmstradCPC | TargetPlatform::ZXSpectrum) // IPF
Format("msa", result.disks, Disk::DiskImageHolder<Storage::Disk::MSA>, TargetPlatform::AtariST) // MSA
Format("mx2", result.cartridges, Cartridge::BinaryDump, TargetPlatform::MSX) // MX2
Format("nib", result.disks, Disk::DiskImageHolder<Storage::Disk::NIB>, TargetPlatform::DiskII) // NIB
Format("o", result.tapes, Tape::ZX80O81P, TargetPlatform::ZX8081) // O
Format("p", result.tapes, Tape::ZX80O81P, TargetPlatform::ZX8081) // P
@ -242,7 +245,7 @@ TargetList Analyser::Static::GetTargets(const std::string &file_name) {
const std::string extension = get_extension(file_name);
// Check whether the file directly identifies a target; if so then just return that.
#define Format(ext, class) \
#define Format(ext, class) \
if(extension == ext) { \
try { \
auto target = Storage::State::class::load(file_name); \

4
Analyser/Static/StaticAnalyser.hpp
View File

@ -21,8 +21,7 @@
#include <string>
#include <vector>
namespace Analyser {
namespace Static {
namespace Analyser::Static {
struct State;
@ -79,7 +78,6 @@ TargetList GetTargets(const std::string &file_name);
*/
Media GetMedia(const std::string &file_name);
}
}
#endif /* StaticAnalyser_hpp */

6
Analyser/Static/ZX8081/StaticAnalyser.hpp
View File

@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace ZX8081 {
namespace Analyser::Static::ZX8081 {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* StaticAnalyser_hpp */

6
Analyser/Static/ZX8081/Target.hpp
View File

@ -14,9 +14,7 @@
#include "../StaticAnalyser.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace ZX8081 {
namespace Analyser::Static::ZX8081 {
struct Target: public ::Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(MemoryModel,
@ -40,8 +38,6 @@ struct Target: public ::Analyser::Static::Target, public Reflection::StructImpl<
}
};
}
}
}
#endif /* Analyser_Static_ZX8081_Target_h */

6
Analyser/Static/ZXSpectrum/StaticAnalyser.hpp
View File

@ -13,14 +13,10 @@
#include "../../../Storage/TargetPlatforms.hpp"
#include <string>
namespace Analyser {
namespace Static {
namespace ZXSpectrum {
namespace Analyser::Static::ZXSpectrum {
TargetList GetTargets(const Media &media, const std::string &file_name, TargetPlatform::IntType potential_platforms);
}
}
}
#endif /* StaticAnalyser_hpp */

6
Analyser/Static/ZXSpectrum/Target.hpp
View File

@ -13,9 +13,7 @@
#include "../../../Reflection/Struct.hpp"
#include "../StaticAnalyser.hpp"
namespace Analyser {
namespace Static {
namespace ZXSpectrum {
namespace Analyser::Static::ZXSpectrum {
struct Target: public ::Analyser::Static::Target, public Reflection::StructImpl<Target> {
ReflectableEnum(Model,
@ -38,8 +36,6 @@ struct Target: public ::Analyser::Static::Target, public Reflection::StructImpl<
}
};
}
}
}
#endif /* Target_h */

20
ClockReceiver/JustInTime.hpp
View File

@ -14,6 +14,8 @@
#include "ClockingHintSource.hpp"
#include "ForceInline.hpp"
#include <atomic>
/*!
A JustInTimeActor holds (i) an embedded object with a run_for method; and (ii) an amount
of time since run_for was last called.
@ -121,7 +123,13 @@ template <class T, class LocalTimeScale = HalfCycles, int multiplier = 1, int di
/// If this object provides sequence points, checks for changes to the next
/// sequence point upon deletion of the pointer.
[[nodiscard]] forceinline auto operator->() {
#ifndef NDEBUG
assert(!flush_concurrency_check_.test_and_set());
#endif
flush();
#ifndef NDEBUG
flush_concurrency_check_.clear();
#endif
return std::unique_ptr<T, SequencePointAwareDeleter>(&object_, SequencePointAwareDeleter(this));
}
@ -130,7 +138,13 @@ template <class T, class LocalTimeScale = HalfCycles, int multiplier = 1, int di
/// Despite being const, this will flush the object and, if relevant, update the next sequence point.
[[nodiscard]] forceinline auto operator -> () const {
auto non_const_this = const_cast<JustInTimeActor<T, LocalTimeScale, multiplier, divider> *>(this);
#ifndef NDEBUG
assert(!non_const_this->flush_concurrency_check_.test_and_set());
#endif
non_const_this->flush();
#ifndef NDEBUG
non_const_this->flush_concurrency_check_.clear();
#endif
return std::unique_ptr<const T, SequencePointAwareDeleter>(&object_, SequencePointAwareDeleter(non_const_this));
}
@ -264,6 +278,10 @@ template <class T, class LocalTimeScale = HalfCycles, int multiplier = 1, int di
void set_component_prefers_clocking(ClockingHint::Source *, ClockingHint::Preference clocking) {
clocking_preference_ = clocking;
}
#ifndef NDEBUG
std::atomic_flag flush_concurrency_check_{};
#endif
};
/*!
@ -276,7 +294,7 @@ template <class T, class LocalTimeScale = HalfCycles, class TargetTimeScale = Lo
/// Constructs a new AsyncJustInTimeActor using the same construction arguments as the included object.
template<typename... Args> AsyncJustInTimeActor(TargetTimeScale threshold, Args&&... args) :
object_(std::forward<Args>(args)...),
threshold_(threshold) {}
threshold_(threshold) {}
/// Adds time to the actor.
inline void operator += (const LocalTimeScale &rhs) {

2
Components/1770/1770.cpp
View File

@ -66,7 +66,7 @@ uint8_t WD1770::read(int address) {
// Per Jean Louis-Guérin's documentation:
//
// * the write-protect bit is locked into place by a type 2 or type 3 command, but is
// * the write-protect bit is locked into place by a type 2 or type 3 command, but is
// read live after a type 1.
// * the track 0 bit is captured during a type 1 instruction and lost upon any other type,
// it is not live sampled.

2
Components/5380/ncr5380.cpp
View File

@ -156,7 +156,7 @@ uint8_t NCR5380::read(int address, bool) {
return uint8_t(bus_.get_state());
case 1:
LOG("[1] Initiator command register get: " << (arbitration_in_progress_ ? 'p' : '-') << (lost_arbitration_ ? 'l' : '-'));
LOG("[1] Initiator command register get: " << (arbitration_in_progress_ ? 'p' : '-') << (lost_arbitration_ ? 'l' : '-'));
return
// Bits repeated as they were set.
(initiator_command_ & ~0x60) |

6
Components/5380/ncr5380.hpp
View File

@ -14,8 +14,7 @@
#include "../../Storage/MassStorage/SCSI/SCSI.hpp"
namespace NCR {
namespace NCR5380 {
namespace NCR::NCR5380 {
/*!
Models the NCR 5380, a SCSI interface chip.
@ -24,7 +23,7 @@ class NCR5380 final: public SCSI::Bus::Observer {
public:
NCR5380(SCSI::Bus &bus, int clock_rate);
/*! Writes @c value to @c address. */
/*! Writes @c value to @c address. */
void write(int address, uint8_t value, bool dma_acknowledge = false);
/*! Reads from @c address. */
@ -86,7 +85,6 @@ class NCR5380 final: public SCSI::Bus::Observer {
bool phase_matches() const;
};
}
}
#endif /* ncr5380_hpp */

4
Components/6522/6522.hpp
View File

@ -15,8 +15,7 @@
#include "../../ClockReceiver/ClockReceiver.hpp"
namespace MOS {
namespace MOS6522 {
namespace MOS::MOS6522 {
enum Port {
A = 0,
@ -138,7 +137,6 @@ template <class BusHandlerT> class MOS6522: public MOS6522Storage {
void evaluate_port_b_output();
};
}
}
#include "Implementation/6522Implementation.hpp"

12
Components/6522/Implementation/6522Implementation.hpp
View File

@ -12,8 +12,7 @@
//
// PB6 count-down mode for timer 2.
namespace MOS {
namespace MOS6522 {
namespace MOS::MOS6522 {
template <typename T> void MOS6522<T>::access(int address) {
switch(address) {
@ -272,7 +271,7 @@ template <typename T> void MOS6522<T>::set_control_line_input(Port port, Line li
// TODO: and at least one full clock since the shift register was written?
if(port == Port::B) {
switch(shift_mode()) {
default: break;
default: break;
case ShiftMode::InUnderCB1: if(value) shift_in(); break; // Shifts in are captured on a low-to-high transition.
case ShiftMode::OutUnderCB1: if(!value) shift_out(); break; // Shifts out are updated on a high-to-low transition.
}
@ -330,7 +329,7 @@ template <typename T> void MOS6522<T>::do_phase2() {
// If the shift register is shifting according to the input clock, do a shift.
switch(shift_mode()) {
default: break;
default: break;
case ShiftMode::InUnderPhase2: shift_in(); break;
case ShiftMode::OutUnderPhase2: shift_out(); break;
}
@ -346,9 +345,9 @@ template <typename T> void MOS6522<T>::do_phase1() {
// If the shift register is shifting according to this timer, do a shift.
// TODO: "shift register is driven by only the low order 8 bits of timer 2"?
switch(shift_mode()) {
default: break;
default: break;
case ShiftMode::InUnderT2: shift_in(); break;
case ShiftMode::OutUnderT2FreeRunning: shift_out(); break;
case ShiftMode::OutUnderT2FreeRunning: shift_out(); break;
case ShiftMode::OutUnderT2: shift_out(); break; // TODO: present a clock on CB1.
}
@ -494,4 +493,3 @@ template <typename T> void MOS6522<T>::shift_out() {
}
}
}

4
Components/6522/Implementation/6522Storage.hpp
View File

@ -11,8 +11,7 @@
#include <cstdint>
namespace MOS {
namespace MOS6522 {
namespace MOS::MOS6522 {
class MOS6522Storage {
protected:
@ -107,7 +106,6 @@ class MOS6522Storage {
}
};
}
}
#endif /* _522Storage_hpp */

4
Components/6526/6526.hpp
View File

@ -14,8 +14,7 @@
#include "Implementation/6526Storage.hpp"
#include "../Serial/Line.hpp"
namespace MOS {
namespace MOS6526 {
namespace MOS::MOS6526 {
enum Port {
A = 0,
@ -86,7 +85,6 @@ template <typename PortHandlerT, Personality personality> class MOS6526:
bool serial_line_did_produce_bit(Serial::Line<true> *line, int bit) final;
};
}
}
#include "Implementation/6526Implementation.hpp"

4
Components/6526/Implementation/6526Implementation.hpp
View File

@ -12,8 +12,7 @@
#include <cassert>
#include <cstdio>
namespace MOS {
namespace MOS6526 {
namespace MOS::MOS6526 {
enum Interrupts: uint8_t {
TimerA = 1 << 0,
@ -238,7 +237,6 @@ bool MOS6526<BusHandlerT, personality>::serial_line_did_produce_bit(Serial::Line
return true;
}
}
}
#endif /* _526Implementation_h */

4
Components/6526/Implementation/6526Storage.hpp
View File

@ -13,8 +13,7 @@
#include "../../../ClockReceiver/ClockReceiver.hpp"
namespace MOS {
namespace MOS6526 {
namespace MOS::MOS6526 {
class TODBase {
public:
@ -333,7 +332,6 @@ struct MOS6526Storage {
int pending_ = 0;
};
}
}
#endif /* _526Storage_h */

12
Components/6560/6560.hpp
View File

@ -15,8 +15,7 @@
#include "../../Outputs/Speaker/Implementation/LowpassSpeaker.hpp"
#include "../../Outputs/Speaker/Implementation/SampleSource.hpp"
namespace MOS {
namespace MOS6560 {
namespace MOS::MOS6560 {
// audio state
class AudioGenerator: public ::Outputs::Speaker::SampleSource {
@ -84,11 +83,11 @@ template <class BusHandler> class MOS6560 {
speaker_.set_input_rate(float(clock_rate / 4.0));
}
void set_scan_target(Outputs::Display::ScanTarget *scan_target) { crt_.set_scan_target(scan_target); }
void set_scan_target(Outputs::Display::ScanTarget *scan_target) { crt_.set_scan_target(scan_target); }
Outputs::Display::ScanStatus get_scaled_scan_status() const { return crt_.get_scaled_scan_status() / 4.0f; }
void set_display_type(Outputs::Display::DisplayType display_type) { crt_.set_display_type(display_type); }
Outputs::Display::DisplayType get_display_type() const { return crt_.get_display_type(); }
Outputs::Speaker::Speaker *get_speaker() { return &speaker_; }
void set_display_type(Outputs::Display::DisplayType display_type) { crt_.set_display_type(display_type); }
Outputs::Display::DisplayType get_display_type() const { return crt_.get_display_type(); }
Outputs::Speaker::Speaker *get_speaker() { return &speaker_; }
void set_high_frequency_cutoff(float cutoff) {
speaker_.set_high_frequency_cutoff(cutoff);
@ -520,7 +519,6 @@ template <class BusHandler> class MOS6560 {
OutputMode output_mode_ = OutputMode::NTSC;
};
}
}
#endif /* _560_hpp */

4
Components/6845/CRTC6845.hpp
View File

@ -14,8 +14,7 @@
#include <cstdint>
#include <cstdio>
namespace Motorola {
namespace CRTC {
namespace Motorola::CRTC {
struct BusState {
bool display_enable = false;
@ -269,7 +268,6 @@ template <class T> class CRTC6845 {
unsigned int character_is_visible_shifter_ = 0;
};
}
}
#endif /* CRTC6845_hpp */

4
Components/6850/6850.hpp
View File

@ -15,8 +15,7 @@
#include "../../ClockReceiver/ClockingHintSource.hpp"
#include "../Serial/Line.hpp"
namespace Motorola {
namespace ACIA {
namespace Motorola::ACIA {
class ACIA: public ClockingHint::Source, private Serial::Line<false>::ReadDelegate {
public:
@ -126,7 +125,6 @@ class ACIA: public ClockingHint::Source, private Serial::Line<false>::ReadDelega
uint8_t get_status();
};
}
}
#endif /* Motorola_ACIA_6850_hpp */

7
Components/68901/MFP68901.hpp
View File

@ -9,12 +9,12 @@
#ifndef MFP68901_hpp
#define MFP68901_hpp
#include <cstdint>
#include "../../ClockReceiver/ClockReceiver.hpp"
#include "../../ClockReceiver/ClockingHintSource.hpp"
namespace Motorola {
namespace MFP68901 {
#include <cstdint>
namespace Motorola::MFP68901 {
class PortHandler {
public:
@ -181,7 +181,6 @@ class MFP68901: public ClockingHint::Source {
}
};
}
}
#endif /* MFP68901_hpp */

4
Components/8255/i8255.hpp
View File

@ -11,8 +11,7 @@
#include <cstdint>
namespace Intel {
namespace i8255 {
namespace Intel::i8255 {
class PortHandler {
public:
@ -88,7 +87,6 @@ template <class T> class i8255 {
T &port_handler_;
};
}
}
#endif /* i8255_hpp */

4
Components/8272/i8272.hpp
View File

@ -15,8 +15,7 @@
#include <memory>
#include <vector>
namespace Intel {
namespace i8272 {
namespace Intel::i8272 {
class BusHandler {
public:
@ -130,7 +129,6 @@ class i8272 : public Storage::Disk::MFMController {
bool is_sleeping_ = false;
};
}
}
#endif /* i8272_hpp */

5
Components/8530/z8530.hpp
View File

@ -11,8 +11,7 @@
#include <cstdint>
namespace Zilog {
namespace SCC {
namespace Zilog::SCC {
/*!
Models the Zilog 8530 SCC, a serial adaptor.
@ -110,7 +109,5 @@ class z8530 {
};
}
}
#endif /* z8530_hpp */

1052
Components/9918/9918.cpp
View File

File diff suppressed because it is too large Load Diff

70
Components/9918/9918.hpp
View File

@ -12,12 +12,36 @@
#include "../../Outputs/CRT/CRT.hpp"
#include "../../ClockReceiver/ClockReceiver.hpp"
#include "Implementation/9918Base.hpp"
#include <cstdint>
namespace TI {
namespace TMS {
namespace TI::TMS {
enum Personality {
TMS9918A, // includes the 9928 and 9929; set TV standard and output device as desired.
// Yamaha extensions.
V9938,
V9958,
// Sega extensions.
SMSVDP,
SMS2VDP,
GGVDP,
MDVDP,
};
enum class TVStandard {
/*! i.e. 50Hz output at around 312.5 lines/field */
PAL,
/*! i.e. 60Hz output at around 262.5 lines/field */
NTSC
};
}
#include "Implementation/9918Base.hpp"
namespace TI::TMS {
/*!
Provides emulation of the TMS9918a, TMS9928 and TMS9929. Likely in the future to be the
@ -30,13 +54,10 @@ namespace TMS {
These chips have only one non-on-demand interaction with the outside world: an interrupt line.
See get_time_until_interrupt and get_interrupt_line for asynchronous operation options.
*/
class TMS9918: public Base {
template <Personality personality> class TMS9918: private Base<personality> {
public:
/*!
Constructs an instance of the drive controller that behaves according to personality @c p.
@param p The type of controller to emulate.
*/
TMS9918(Personality p);
/*! Constructs an instance of the VDP that behaves according to the templated personality. */
TMS9918();
/*! Sets the TV standard for this TMS, if that is hard-coded in hardware. */
void set_tv_standard(TVStandard standard);
@ -44,18 +65,24 @@ class TMS9918: public Base {
/*! Sets the scan target this TMS will post content to. */
void set_scan_target(Outputs::Display::ScanTarget *);
/// Gets the current scan status.
/*! Gets the current scan status. */
Outputs::Display::ScanStatus get_scaled_scan_status() const;
/*! Sets the type of display the CRT will request. */
/*! Sets the type of CRT display. */
void set_display_type(Outputs::Display::DisplayType);
/*! Gets the type of display the CRT will request. */
/*! Gets the type of CRT display. */
Outputs::Display::DisplayType get_display_type() const;
/*!
Runs the VCP for the number of cycles indicate; it is an implicit assumption of the code
that the input clock rate is 3579545 Hz, the NTSC colour clock rate.
Runs the VDP for the number of cycles indicate; the input clock rate is implicitly assumed.
For everything except the Mega Drive VDP:
* the input clock rate should be 3579545 Hz, the NTSC colour clock rate.
For the Mega Drive:
* the input clock rate should be around 7.6MHz; 15/7ths of the NTSC colour
clock rate for NTSC output and 12/7ths of the PAL colour clock rate for PAL output.
*/
void run_for(const HalfCycles cycles);
@ -65,11 +92,11 @@ class TMS9918: public Base {
/*! Gets a register value. */
uint8_t read(int address);
/*! Gets the current scan line; provided by the Master System only. */
uint8_t get_current_line();
/*! Gets the current scan line; provided by the Sega VDPs only. */
uint8_t get_current_line() const;
/*! Gets the current latched horizontal counter; provided by the Master System only. */
uint8_t get_latched_horizontal_counter();
/*! Gets the current latched horizontal counter; provided by the Sega VDPs only. */
uint8_t get_latched_horizontal_counter() const;
/*! Latches the current horizontal counter. */
void latch_horizontal_counter();
@ -81,7 +108,7 @@ class TMS9918: public Base {
If get_interrupt_line is true now of if get_interrupt_line would
never return true, returns HalfCycles::max().
*/
HalfCycles get_next_sequence_point();
HalfCycles get_next_sequence_point() const;
/*!
Returns the amount of time until the nominated line interrupt position is
@ -96,10 +123,9 @@ class TMS9918: public Base {
/*!
@returns @c true if the interrupt line is currently active; @c false otherwise.
*/
bool get_interrupt_line();
bool get_interrupt_line() const;
};
}
}
#endif /* TMS9918_hpp */

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//
// AccessEnums.hpp
// Clock Signal
//
// Created by Thomas Harte on 26/01/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef AccessEnums_hpp
#define AccessEnums_hpp
namespace TI::TMS {
// The screen mode is a necessary predecessor to picking the line mode,
// which is the thing latched per line.
enum class ScreenMode {
// Original TMS modes.
Blank,
Text,
MultiColour,
ColouredText,
Graphics,
// 8-bit Sega modes.
SMSMode4,
// New Yamaha V9938 modes.
YamahaText80,
YamahaGraphics3,
YamahaGraphics4,
YamahaGraphics5,
YamahaGraphics6,
YamahaGraphics7,
// Rebranded Yamaha V9938 modes.
YamahaGraphics1 = ColouredText,
YamahaGraphics2 = Graphics,
};
constexpr int pixels_per_byte(ScreenMode mode) {
switch(mode) {
default:
case ScreenMode::Blank: return 1;
case ScreenMode::Text: return 6;
case ScreenMode::MultiColour: return 2;
case ScreenMode::ColouredText: return 8;
case ScreenMode::Graphics: return 8;
case ScreenMode::SMSMode4: return 2;
case ScreenMode::YamahaText80: return 6;
case ScreenMode::YamahaGraphics3: return 8;
case ScreenMode::YamahaGraphics4: return 2;
case ScreenMode::YamahaGraphics5: return 4;
case ScreenMode::YamahaGraphics6: return 2;
case ScreenMode::YamahaGraphics7: return 1;
}
}
constexpr int width(ScreenMode mode) {
switch(mode) {
default:
case ScreenMode::Blank: return 0;
case ScreenMode::Text: return 240;
case ScreenMode::MultiColour: return 256;
case ScreenMode::ColouredText: return 256;
case ScreenMode::Graphics: return 256;
case ScreenMode::SMSMode4: return 256;
case ScreenMode::YamahaText80: return 480;
case ScreenMode::YamahaGraphics3: return 256;
case ScreenMode::YamahaGraphics4: return 256;
case ScreenMode::YamahaGraphics5: return 512;
case ScreenMode::YamahaGraphics6: return 512;
case ScreenMode::YamahaGraphics7: return 256;
}
}
constexpr bool interleaves_banks(ScreenMode mode) {
return mode == ScreenMode::YamahaGraphics6 || mode == ScreenMode::YamahaGraphics7;
}
constexpr bool is_text(ScreenMode mode) {
return mode == ScreenMode::Text || mode == ScreenMode::YamahaText80;
}
enum class FetchMode {
Text,
Character,
Refresh,
SMS,
Yamaha,
};
enum class MemoryAccess {
Read, Write, None
};
enum class VerticalState {
/// Describes any line on which pixels do not appear and no fetching occurs, including
/// the border, blanking and sync.
Blank,
/// A line on which pixels do not appear but fetching occurs.
Prefetch,
/// A line on which pixels appear and fetching occurs.
Pixels,
};
enum class SpriteMode {
Mode1,
Mode2,
MasterSystem,
};
}
#endif /* AccessEnums_hpp */

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//
// ClockConverter.hpp
// Clock Signal
//
// Created by Thomas Harte on 01/01/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef ClockConverter_hpp
#define ClockConverter_hpp
#include "../9918.hpp"
#include "PersonalityTraits.hpp"
#include "LineLayout.hpp"
namespace TI::TMS {
enum class Clock {
/// Whatever rate this VDP runs at, with location 0 being "the start" of the line per internal preference.
Internal,
/// A 342-cycle/line clock with the same start position as ::Internal.
TMSPixel,
/// A 171-cycle/line clock that begins at the memory window which starts straight after ::Internal = 0.
TMSMemoryWindow,
/// A fixed 1368-cycle/line clock that is used to count output to the CRT.
CRT,
/// Provides the same clock rate as ::Internal but is relocated so that 0 is the start of horizontal sync — very not coincidentally,
/// where Grauw puts 0 on his detailed TMS and Yamaha timing diagrams.
FromStartOfSync,
};
template <Personality personality, Clock clk> constexpr int clock_rate() {
static_assert(
is_classic_vdp(personality) ||
is_yamaha_vdp(personality) ||
(personality == Personality::MDVDP)
);
switch(clk) {
case Clock::TMSPixel: return 342;
case Clock::TMSMemoryWindow: return 171;
case Clock::CRT: return 1368;
case Clock::Internal:
case Clock::FromStartOfSync:
if constexpr (is_classic_vdp(personality)) {
return 342;
} else if constexpr (is_yamaha_vdp(personality)) {
return 1368;
} else if constexpr (personality == Personality::MDVDP) {
return 3420;
}
}
}
/// Statelessly converts @c length to the internal clock for @c personality; applies conversions per the list of clocks in left-to-right order.
template <Personality personality, Clock head, Clock... tail> constexpr int to_internal(int length) {
if constexpr (head == Clock::FromStartOfSync) {
length = (length + LineLayout<personality>::StartOfSync) % LineLayout<personality>::CyclesPerLine;
} else {
length = length * clock_rate<personality, Clock::Internal>() / clock_rate<personality, head>();
}
if constexpr (!sizeof...(tail)) {
return length;
} else {
return to_internal<personality, tail...>(length);
}
}
/// Statelessly converts @c length to @c clock from the the internal clock used by VDPs of @c personality throwing away any remainder.
template <Personality personality, Clock head, Clock... tail> constexpr int from_internal(int length) {
if constexpr (head == Clock::FromStartOfSync) {
length =
(length + LineLayout<personality>::CyclesPerLine - LineLayout<personality>::StartOfSync)
% LineLayout<personality>::CyclesPerLine;
} else {
length = length * clock_rate<personality, head>() / clock_rate<personality, Clock::Internal>();
}
if constexpr (!sizeof...(tail)) {
return length;
} else {
return to_internal<personality, tail...>(length);
}
}
/*!
Provides a [potentially-]stateful conversion between the external and internal clocks.
Unlike the other clock conversions, this may be non-integral, requiring that
an error term be tracked.
*/
template <Personality personality> class ClockConverter {
public:
/*!
Given that another @c source external **half-cycles** has occurred,
indicates how many complete internal **cycles** have additionally elapsed
since the last call to @c to_internal.
E.g. for the TMS, @c source will count 456 ticks per line, and the internal clock
runs at 342 ticks per line, so the proper conversion is to multiply by 3/4.
*/
int to_internal(int source) {
switch(personality) {
// Default behaviour is to apply a multiplication by 3/4;
// this is correct for the TMS and Sega VDPs other than the Mega Drive.
default: {
const int result = source * 3 + cycles_error_;
cycles_error_ = result & 3;
return result >> 2;
}
// The two Yamaha chips have an internal clock that is four times
// as fast as the TMS, therefore a stateless translation is possible.
case Personality::V9938:
case Personality::V9958:
return source * 3;
// The Mega Drive runs at 3420 master clocks per line, which is then
// divided by 4 or 5 depending on other state. That's 7 times the
// rate provided to the CPU; given that the input is in half-cycles
// the proper multiplier is therefore 3.5.
case Personality::MDVDP: {
const int result = source * 7 + cycles_error_;
cycles_error_ = result & 1;
return result >> 1;
}
}
}
/*!
Provides the number of external cycles that need to begin from now in order to
get at least @c internal_cycles into the future.
*/
HalfCycles half_cycles_before_internal_cycles(int internal_cycles) const {
// Logic here correlates with multipliers as per @c to_internal.
switch(personality) {
default:
// Relative to the external clock multiplied by 3, it will definitely take this
// many cycles to complete a further (internal_cycles - 1) after the current one.
internal_cycles = (internal_cycles - 1) << 2;
// It will also be necessary to complete the current one.
internal_cycles += 4 - cycles_error_;
// Round up to get the first external cycle after
// the number of internal_cycles has elapsed.
return HalfCycles((internal_cycles + 2) / 3);
case Personality::V9938:
case Personality::V9958:
return HalfCycles((internal_cycles + 2) / 3);
case Personality::MDVDP:
internal_cycles = (internal_cycles - 1) << 1;
internal_cycles += 2 - cycles_error_;
return HalfCycles((internal_cycles + 6) / 7);
}
}
private:
// Holds current residue in conversion from the external to
// internal clock.
int cycles_error_ = 0;
};
}
#endif /* ClockConverter_hpp */

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//
// Draw.hpp
// Clock Signal
//
// Created by Thomas Harte on 05/01/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef Draw_hpp
#define Draw_hpp
namespace TI::TMS {
// MARK: - Sprites, as generalised.
template <Personality personality>
template <SpriteMode mode, bool double_width>
void Base<personality>::draw_sprites([[maybe_unused]] uint8_t y, int start, int end, const std::array<uint32_t, 16> &palette, int *colour_buffer) {
if(!draw_line_buffer_->sprites) {
return;
}
auto &buffer = *draw_line_buffer_->sprites;
if(!buffer.active_sprite_slot) {
return;
}
const int shift_advance = sprites_magnified_ ? 1 : 2;
// If this is the start of the line clip any part of any sprites that is off to the left.
if(!start) {
for(int index = 0; index < buffer.active_sprite_slot; ++index) {
auto &sprite = buffer.active_sprites[index];
if(sprite.x < 0) sprite.shift_position -= shift_advance * sprite.x;
}
}
int sprite_buffer[256];
int sprite_collision = 0;
memset(&sprite_buffer[start], 0, size_t(end - start)*sizeof(sprite_buffer[0]));
if constexpr (mode == SpriteMode::MasterSystem) {
// Draw all sprites into the sprite buffer.
for(int index = buffer.active_sprite_slot - 1; index >= 0; --index) {
auto &sprite = buffer.active_sprites[index];
if(sprite.shift_position >= 16) {
continue;
}
const int pixel_start = std::max(start, sprite.x);
// TODO: it feels like the work below should be simplifiable;
// the double shift in particular, and hopefully the variable shift.
for(int c = pixel_start; c < end && sprite.shift_position < 16; ++c) {
const int shift = (sprite.shift_position >> 1);
const int sprite_colour =
(((sprite.image[3] << shift) & 0x80) >> 4) |
(((sprite.image[2] << shift) & 0x80) >> 5) |
(((sprite.image[1] << shift) & 0x80) >> 6) |
(((sprite.image[0] << shift) & 0x80) >> 7);
if(sprite_colour) {
sprite_collision |= sprite_buffer[c];
sprite_buffer[c] = sprite_colour | 0x10;
}
sprite.shift_position += shift_advance;
}
}
// Draw the sprite buffer onto the colour buffer, wherever the tile map doesn't have
// priority (or is transparent).
for(int c = start; c < end; ++c) {
if(
sprite_buffer[c] &&
(!(colour_buffer[c]&0x20) || !(colour_buffer[c]&0xf))
) colour_buffer[c] = sprite_buffer[c];
}
if(sprite_collision) {
status_ |= StatusSpriteCollision;
}
return;
}
if constexpr (SpriteBuffer::test_is_filling) {
assert(!buffer.is_filling);
}
constexpr uint32_t sprite_colour_selection_masks[2] = {0x00000000, 0xffffffff};
constexpr int colour_masks[16] = {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
const int sprite_width = sprites_16x16_ ? 16 : 8;
const int shifter_target = sprite_width << 1;
const int pixel_width = sprites_magnified_ ? sprite_width << 1 : sprite_width;
int min_sprite = 0;
//
// Approach taken for Mode 2 sprites:
//
// (1) precompute full sprite images, at up to 32 pixels wide;
// (2) for each sprite that is marked as CC, walk backwards until the
// first sprite that is not marked CC, ORing it into the precomputed
// image at each step;
// (3) subsequently, just draw each sprite image independently.
//
if constexpr (mode == SpriteMode::Mode2) {
// Determine the lowest visible sprite; exit early if that leaves no sprites visible.
for(; min_sprite < buffer.active_sprite_slot; min_sprite++) {
auto &sprite = buffer.active_sprites[min_sprite];
if(sprite.opaque()) {
break;
}
}
if(min_sprite == buffer.active_sprite_slot) {
return;
}
if(!start) {
// Pre-rasterise the sprites one-by-one.
if(sprites_magnified_) {
for(int index = min_sprite; index < buffer.active_sprite_slot; index++) {
auto &sprite = buffer.active_sprites[index];
for(int c = 0; c < 32; c+= 2) {
const int shift = (c >> 1) ^ 7;
const int bit = 1 & (sprite.image[shift >> 3] >> (shift & 7));
Storage<personality>::sprite_cache_[index][c] =
Storage<personality>::sprite_cache_[index][c + 1] =
(sprite.image[2] & 0xf & sprite_colour_selection_masks[bit]) |
uint8_t((bit << StatusSpriteCollisionShift) & sprite.collision_bit());
}
}
} else {
for(int index = min_sprite; index < buffer.active_sprite_slot; index++) {
auto &sprite = buffer.active_sprites[index];
for(int c = 0; c < 16; c++) {
const int shift = c ^ 7;
const int bit = 1 & (sprite.image[shift >> 3] >> (shift & 7));
Storage<personality>::sprite_cache_[index][c] =
(sprite.image[2] & 0xf & sprite_colour_selection_masks[bit]) |
uint8_t((bit << StatusSpriteCollisionShift) & sprite.collision_bit());
}
}
}
// Go backwards compositing any sprites that are set as OR masks onto their parents.
for(int index = buffer.active_sprite_slot - 1; index >= min_sprite + 1; --index) {
auto &sprite = buffer.active_sprites[index];
if(sprite.opaque()) {
continue;
}
// Sprite may affect all previous up to and cindlugin the next one that is opaque.
for(int previous_index = index - 1; previous_index >= min_sprite; --previous_index) {
// Determine region of overlap (if any).
auto &previous = buffer.active_sprites[previous_index];
const int origin = sprite.x - previous.x;
const int x1 = std::max(0, -origin);
const int x2 = std::min(pixel_width - origin, pixel_width);
// Composite sprites.
for(int x = x1; x < x2; x++) {
Storage<personality>::sprite_cache_[previous_index][x + origin]
|= Storage<personality>::sprite_cache_[index][x];
}
// If a previous opaque sprite has been found, stop.
if(previous.opaque()) {
break;
}
}
}
}
// Draw.
for(int index = buffer.active_sprite_slot - 1; index >= min_sprite; --index) {
auto &sprite = buffer.active_sprites[index];
const int x1 = std::max(0, start - sprite.x);
const int x2 = std::min(end - sprite.x, pixel_width);
for(int x = x1; x < x2; x++) {
const uint8_t colour = Storage<personality>::sprite_cache_[index][x];
// Plot colour, if visible.
if(colour) {
pixel_origin_[sprite.x + x] = palette[colour & 0xf];
}
// TODO: is collision location recorded in mode 1?
// Check for a new collision.
if(!(status_ & StatusSpriteCollision)) {
sprite_collision |= sprite_buffer[sprite.x + x];
sprite_buffer[sprite.x + x] |= colour;
status_ |= sprite_collision & StatusSpriteCollision;
if(status_ & StatusSpriteCollision) {
Storage<personality>::collision_location_[0] = uint16_t(x);
Storage<personality>::collision_location_[1] = uint16_t(y);
}
}
}
}
return;
}
if constexpr (mode == SpriteMode::Mode1) {
for(int index = buffer.active_sprite_slot - 1; index >= min_sprite; --index) {
auto &sprite = buffer.active_sprites[index];
if(sprite.shift_position >= shifter_target) {
continue;
}
const int pixel_start = std::max(start, sprite.x);
for(int c = pixel_start; c < end && sprite.shift_position < shifter_target; ++c) {
const int shift = (sprite.shift_position >> 1) ^ 7;
int sprite_colour = (sprite.image[shift >> 3] >> (shift & 7)) & 1;
// A colision is detected regardless of sprite colour ...
sprite_collision |= sprite_buffer[c] & sprite_colour;
sprite_buffer[c] |= sprite_colour;
// ... but a sprite with the transparent colour won't actually be visible.
sprite_colour &= colour_masks[sprite.image[2] & 0xf];
pixel_origin_[c] =
(pixel_origin_[c] & sprite_colour_selection_masks[sprite_colour^1]) |
(palette[sprite.image[2] & 0xf] & sprite_colour_selection_masks[sprite_colour]);
sprite.shift_position += shift_advance;
}
}
status_ |= sprite_collision << StatusSpriteCollisionShift;
return;
}
}
// Mode 2 logic, as I currently understand it, as a note for my future self:
//
// If a sprite is marked as 'CC' then it doesn't collide, but its colour value is
// ORd with those of all lower-numbered sprites down to the next one that is visible on
// that line and not marked CC.
//
// If no previous sprite meets that criteria, no pixels are displayed. But if one does
// then pixels are displayed even where they don't overlap with the earlier sprites.
//
// ... so in terms of my loop above, I guess I need temporary storage to accumulate
// an OR mask up until I hit a non-CC sprite, at which point I composite everything out?
// I'm not immediately sure whether I can appropriately reuse sprite_buffer, but possibly?
// MARK: - TMS9918
template <Personality personality>
template <SpriteMode sprite_mode>
void Base<personality>::draw_tms_character(int start, int end) {
auto &line_buffer = *draw_line_buffer_;
// Paint the background tiles.
const int pixels_left = end - start;
if(this->screen_mode_ == ScreenMode::MultiColour) {
for(int c = start; c < end; ++c) {
pixel_target_[c] = palette()[
(line_buffer.tiles.patterns[c >> 3][0] >> (((c & 4)^4))) & 15
];
}
} else {
const int shift = start & 7;
int byte_column = start >> 3;
int length = std::min(pixels_left, 8 - shift);
int pattern = Numeric::bit_reverse(line_buffer.tiles.patterns[byte_column][0]) >> shift;
uint8_t colour = line_buffer.tiles.patterns[byte_column][1];
uint32_t colours[2] = {
palette()[(colour & 15) ? (colour & 15) : background_colour_],
palette()[(colour >> 4) ? (colour >> 4) : background_colour_]
};
int background_pixels_left = pixels_left;
while(true) {
background_pixels_left -= length;
for(int c = 0; c < length; ++c) {
pixel_target_[c] = colours[pattern&0x01];
pattern >>= 1;
}
pixel_target_ += length;
if(!background_pixels_left) break;
length = std::min(8, background_pixels_left);
byte_column++;
pattern = Numeric::bit_reverse(line_buffer.tiles.patterns[byte_column][0]);
colour = line_buffer.tiles.patterns[byte_column][1];
colours[0] = palette()[(colour & 15) ? (colour & 15) : background_colour_];
colours[1] = palette()[(colour >> 4) ? (colour >> 4) : background_colour_];
}
}
draw_sprites<sprite_mode, false>(0, start, end, palette()); // TODO: propagate a real 'y' into here.
}
template <Personality personality>
template <bool apply_blink>
void Base<personality>::draw_tms_text(int start, int end) {
auto &line_buffer = *draw_line_buffer_;
uint32_t colours[2][2] = {
{palette()[background_colour_], palette()[text_colour_]},
{0, 0}
};
if constexpr (apply_blink) {
colours[1][0] = palette()[Storage<personality>::blink_background_colour_];
colours[1][1] = palette()[Storage<personality>::blink_text_colour_];
}
const int shift = start % 6;
int byte_column = start / 6;
int pattern = Numeric::bit_reverse(line_buffer.characters.shapes[byte_column]) >> shift;
int pixels_left = end - start;
int length = std::min(pixels_left, 6 - shift);
int flag = 0;
if constexpr (apply_blink) {
flag = (line_buffer.characters.flags[byte_column >> 3] >> ((byte_column & 7) ^ 7)) & Storage<personality>::in_blink_;
}
while(true) {
pixels_left -= length;
for(int c = 0; c < length; ++c) {
pixel_target_[c] = colours[flag][(pattern&0x01)];
pattern >>= 1;
}
pixel_target_ += length;
if(!pixels_left) break;
length = std::min(6, pixels_left);
byte_column++;
pattern = Numeric::bit_reverse(line_buffer.characters.shapes[byte_column]);
if constexpr (apply_blink) {
flag = (line_buffer.characters.flags[byte_column >> 3] >> ((byte_column & 7) ^ 7)) & Storage<personality>::in_blink_;
}
}
}
// MARK: - Master System
template <Personality personality>
void Base<personality>::draw_sms([[maybe_unused]] int start, [[maybe_unused]] int end, [[maybe_unused]] uint32_t cram_dot) {
if constexpr (is_sega_vdp(personality)) {
int colour_buffer[256];
auto &line_buffer = *draw_line_buffer_;
/*
Add extra border for any pixels that fall before the fine scroll.
*/
int tile_start = start, tile_end = end;
int tile_offset = start;
if(output_pointer_.row >= 16 || !Storage<personality>::horizontal_scroll_lock_) {
for(int c = start; c < (line_buffer.latched_horizontal_scroll & 7); ++c) {
colour_buffer[c] = 16 + background_colour_;
++tile_offset;
}
// Remove the border area from that to which tiles will be drawn.
tile_start = std::max(start - (line_buffer.latched_horizontal_scroll & 7), 0);
tile_end = std::max(end - (line_buffer.latched_horizontal_scroll & 7), 0);
}
uint32_t pattern;
uint8_t *const pattern_index = reinterpret_cast<uint8_t *>(&pattern);
/*
Add background tiles; these will fill the colour_buffer with values in which
the low five bits are a palette index, and bit six is set if this tile has
priority over sprites.
*/
if(tile_start < end) {
const int shift = tile_start & 7;
int byte_column = tile_start >> 3;
int pixels_left = tile_end - tile_start;
int length = std::min(pixels_left, 8 - shift);
pattern = *reinterpret_cast<const uint32_t *>(line_buffer.tiles.patterns[byte_column]);
if(line_buffer.tiles.flags[byte_column]&2)
pattern >>= shift;
else
pattern <<= shift;
while(true) {
const int palette_offset = (line_buffer.tiles.flags[byte_column]&0x18) << 1;
if(line_buffer.tiles.flags[byte_column]&2) {
for(int c = 0; c < length; ++c) {
colour_buffer[tile_offset] =
((pattern_index[3] & 0x01) << 3) |
((pattern_index[2] & 0x01) << 2) |
((pattern_index[1] & 0x01) << 1) |
((pattern_index[0] & 0x01) << 0) |
palette_offset;
++tile_offset;
pattern >>= 1;
}
} else {
for(int c = 0; c < length; ++c) {
colour_buffer[tile_offset] =
((pattern_index[3] & 0x80) >> 4) |
((pattern_index[2] & 0x80) >> 5) |
((pattern_index[1] & 0x80) >> 6) |
((pattern_index[0] & 0x80) >> 7) |
palette_offset;
++tile_offset;
pattern <<= 1;
}
}
pixels_left -= length;
if(!pixels_left) break;
length = std::min(8, pixels_left);
byte_column++;
pattern = *reinterpret_cast<const uint32_t *>(line_buffer.tiles.patterns[byte_column]);
}
}
/*
Apply sprites (if any).
*/
draw_sprites<SpriteMode::MasterSystem, false>(0, start, end, palette(), colour_buffer); // TODO provide good y, as per elsewhere.
// Map from the 32-colour buffer to real output pixels, applying the specific CRAM dot if any.
pixel_target_[start] = Storage<personality>::colour_ram_[colour_buffer[start] & 0x1f] | cram_dot;
for(int c = start+1; c < end; ++c) {
pixel_target_[c] = Storage<personality>::colour_ram_[colour_buffer[c] & 0x1f];
}
// If the VDP is set to hide the left column and this is the final call that'll come
// this line, hide it.
if(end == 256) {
if(Storage<personality>::hide_left_column_) {
pixel_origin_[0] = pixel_origin_[1] = pixel_origin_[2] = pixel_origin_[3] =
pixel_origin_[4] = pixel_origin_[5] = pixel_origin_[6] = pixel_origin_[7] =
Storage<personality>::colour_ram_[16 + background_colour_];
}
}
}
}
// MARK: - Yamaha
template <Personality personality>
template <ScreenMode mode>
void Base<personality>::draw_yamaha(uint8_t y, int start, int end) {
[[maybe_unused]] const auto active_palette = palette();
const int sprite_start = start >> 2;
const int sprite_end = end >> 2;
auto &line_buffer = *draw_line_buffer_;
// Observation justifying Duff's device below: it's acceptable to paint too many pixels — to paint
// beyond `end` — provided that the overpainting is within normal bitmap bounds, because any
// mispainted pixels will be replaced before becoming visible to the user.
if constexpr (mode == ScreenMode::YamahaGraphics4 || mode == ScreenMode::YamahaGraphics6) {
start >>= (mode == ScreenMode::YamahaGraphics4) ? 2 : 1;
end >>= (mode == ScreenMode::YamahaGraphics4) ? 2 : 1;
int column = start & ~1;
const int offset = start & 1;
start >>= 1;
end = (end + 1) >> 1;
switch(offset) {
case 0:
do {
pixel_target_[column+0] = active_palette[line_buffer.bitmap[start] >> 4]; [[fallthrough]];
case 1: pixel_target_[column+1] = active_palette[line_buffer.bitmap[start] & 0xf];
++start;
column += 2;
} while(start < end);
}
}
if constexpr (mode == ScreenMode::YamahaGraphics5) {
start >>= 1;
end >>= 1;
int column = start & ~3;
const int offset = start & 3;
start >>= 2;
end = (end + 3) >> 2;
switch(offset) {
case 0:
do {
pixel_target_[column+0] = active_palette[line_buffer.bitmap[start] >> 6]; [[fallthrough]];
case 1: pixel_target_[column+1] = active_palette[(line_buffer.bitmap[start] >> 4) & 3]; [[fallthrough]];
case 2: pixel_target_[column+2] = active_palette[(line_buffer.bitmap[start] >> 2) & 3]; [[fallthrough]];
case 3: pixel_target_[column+3] = active_palette[line_buffer.bitmap[start] & 3];
++start;
column += 4;
} while(start < end);
}
}
if constexpr (mode == ScreenMode::YamahaGraphics7) {
start >>= 2;
end >>= 2;
while(start < end) {
pixel_target_[start] =
palette_pack(
uint8_t((line_buffer.bitmap[start] & 0x1c) + ((line_buffer.bitmap[start] & 0x1c) << 3) + ((line_buffer.bitmap[start] & 0x1c) >> 3)),
uint8_t((line_buffer.bitmap[start] & 0xe0) + ((line_buffer.bitmap[start] & 0xe0) >> 3) + ((line_buffer.bitmap[start] & 0xe0) >> 6)),
uint8_t((line_buffer.bitmap[start] & 0x03) + ((line_buffer.bitmap[start] & 0x03) << 2) + ((line_buffer.bitmap[start] & 0x03) << 4) + ((line_buffer.bitmap[start] & 0x03) << 6))
);
++start;
}
}
constexpr std::array<uint32_t, 16> graphics7_sprite_palette = {
palette_pack(0b00000000, 0b00000000, 0b00000000), palette_pack(0b00000000, 0b00000000, 0b01001001),
palette_pack(0b00000000, 0b01101101, 0b00000000), palette_pack(0b00000000, 0b01101101, 0b01001001),
palette_pack(0b01101101, 0b00000000, 0b00000000), palette_pack(0b01101101, 0b00000000, 0b01001001),
palette_pack(0b01101101, 0b01101101, 0b00000000), palette_pack(0b01101101, 0b01101101, 0b01001001),
palette_pack(0b10010010, 0b11111111, 0b01001001), palette_pack(0b00000000, 0b00000000, 0b11111111),
palette_pack(0b00000000, 0b11111111, 0b00000000), palette_pack(0b00000000, 0b11111111, 0b11111111),
palette_pack(0b11111111, 0b00000000, 0b00000000), palette_pack(0b11111111, 0b00000000, 0b11111111),
palette_pack(0b11111111, 0b11111111, 0b00000000), palette_pack(0b11111111, 0b11111111, 0b11111111),
};
// Possibly TODO: is the data-sheet trying to allege some sort of colour mixing for sprites in Mode 6?
draw_sprites<
SpriteMode::Mode2,
mode == ScreenMode::YamahaGraphics5 || mode == ScreenMode::YamahaGraphics6
>(y, sprite_start, sprite_end, mode == ScreenMode::YamahaGraphics7 ? graphics7_sprite_palette : palette());
}
template <Personality personality>
void Base<personality>::draw_yamaha(uint8_t y, int start, int end) {
if constexpr (is_yamaha_vdp(personality)) {
switch(draw_line_buffer_->screen_mode) {
// Modes that are the same (or close enough) to those on the TMS.
case ScreenMode::Text: draw_tms_text<false>(start >> 2, end >> 2); break;
case ScreenMode::YamahaText80: draw_tms_text<true>(start >> 1, end >> 1); break;
case ScreenMode::MultiColour:
case ScreenMode::ColouredText:
case ScreenMode::Graphics: draw_tms_character(start >> 2, end >> 2); break;
case ScreenMode::YamahaGraphics3:
draw_tms_character<SpriteMode::Mode2>(start >> 2, end >> 2);
break;
#define Dispatch(x) case ScreenMode::x: draw_yamaha<ScreenMode::x>(y, start, end); break;
Dispatch(YamahaGraphics4);
Dispatch(YamahaGraphics5);
Dispatch(YamahaGraphics6);
Dispatch(YamahaGraphics7);
#undef Dispatch
default: break;
}
}
}
// MARK: - Mega Drive
// TODO.
}
#endif /* Draw_hpp */

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//
// Fetch.hpp
// Clock Signal
//
// Created by Thomas Harte on 01/01/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef Fetch_hpp
#define Fetch_hpp
namespace TI::TMS {
/*
Fetching routines follow below; they obey the following rules:
1) input is a start position and an end position; they should perform the proper
operations for the period: start <= time < end.
2) times are measured relative to the an appropriate clock — they directly
count access windows on the TMS and Master System, and cycles on a Yamaha.
3) within each sequencer, cycle are numbered as per Grauw's timing diagrams. The difference
between those and internal timing, if there is one, is handled by the dispatcher.
4) all of these functions are templated with a `use_end` parameter. That will be true if
end is < [cycles per line], false otherwise. So functions can use it to eliminate
should-exit-now checks (which is likely to be the more usual path of execution).
Provided for the benefit of the methods below:
* the function external_slot(), which will perform any pending VRAM read/write.
All functions should just spool data to intermediary storage. Fetching and drawing are decoupled.
*/
// MARK: - Address mask helpers.
/// @returns An instance of @c AddressT with all top bits set down to and including
/// bit @c end and all others clear.
///
/// So e.g. if @c AddressT is @c uint16_t and this VDP has a 15-bit address space then
/// @c top_bits<10> will be the address with bits 15 to 10 (inclusive) set and the rest clear.
template <typename AddressT, int end> constexpr AddressT top_bits() {
return AddressT(~0) - AddressT((1 << end) - 1);
}
/// Modifies and returns @c source so that all bits above position @c n are set; the others are unmodified.
template <int n, typename AddressT> constexpr AddressT bits(AddressT source = 0) {
return AddressT(source | top_bits<AddressT, n>());
}
// MARK: - 171-window Dispatcher.
template <Personality personality>
template<bool use_end, typename SequencerT> void Base<personality>::dispatch(SequencerT &fetcher, int start, int end) {
#define index(n) \
if(use_end && end == n) return; \
[[fallthrough]]; \
case n: fetcher.template fetch<from_internal<personality, Clock::FromStartOfSync>(n)>();
switch(start) {
default: assert(false);
index(0); index(1); index(2); index(3); index(4); index(5); index(6); index(7); index(8); index(9);
index(10); index(11); index(12); index(13); index(14); index(15); index(16); index(17); index(18); index(19);
index(20); index(21); index(22); index(23); index(24); index(25); index(26); index(27); index(28); index(29);
index(30); index(31); index(32); index(33); index(34); index(35); index(36); index(37); index(38); index(39);
index(40); index(41); index(42); index(43); index(44); index(45); index(46); index(47); index(48); index(49);
index(50); index(51); index(52); index(53); index(54); index(55); index(56); index(57); index(58); index(59);
index(60); index(61); index(62); index(63); index(64); index(65); index(66); index(67); index(68); index(69);
index(70); index(71); index(72); index(73); index(74); index(75); index(76); index(77); index(78); index(79);
index(80); index(81); index(82); index(83); index(84); index(85); index(86); index(87); index(88); index(89);
index(90); index(91); index(92); index(93); index(94); index(95); index(96); index(97); index(98); index(99);
index(100); index(101); index(102); index(103); index(104); index(105); index(106); index(107); index(108); index(109);
index(110); index(111); index(112); index(113); index(114); index(115); index(116); index(117); index(118); index(119);
index(120); index(121); index(122); index(123); index(124); index(125); index(126); index(127); index(128); index(129);
index(130); index(131); index(132); index(133); index(134); index(135); index(136); index(137); index(138); index(139);
index(140); index(141); index(142); index(143); index(144); index(145); index(146); index(147); index(148); index(149);
index(150); index(151); index(152); index(153); index(154); index(155); index(156); index(157); index(158); index(159);
index(160); index(161); index(162); index(163); index(164); index(165); index(166); index(167); index(168); index(169);
index(170);
}
#undef index
}
// MARK: - Fetchers.
template <Personality personality>
struct TextFetcher {
using AddressT = typename Base<personality>::AddressT;
TextFetcher(Base<personality> *base, uint8_t y) :
base(base),
row_base(base->pattern_name_address_ & bits<10>(AddressT((y >> 3) * 40))),
row_offset(base->pattern_generator_table_address_ & bits<11>(AddressT(y & 7))) {}
void fetch_name(AddressT column, int slot = 0) {
base->name_[slot] = base->ram_[row_base + column];
}
void fetch_pattern(AddressT column, int slot = 0) {
base->fetch_line_buffer_->characters.shapes[column] = base->ram_[row_offset + size_t(base->name_[slot] << 3)];
}
Base<personality> *const base;
const AddressT row_base;
const AddressT row_offset;
};
template <Personality personality>
struct CharacterFetcher {
using AddressT = typename Base<personality>::AddressT;
CharacterFetcher(Base<personality> *base, uint8_t y) :
base(base),
y(y),
row_base(base->pattern_name_address_ & bits<10>(AddressT((y << 2)&~31)))
{
pattern_base = base->pattern_generator_table_address_;
colour_base = base->colour_table_address_;
colour_name_shift = 6;
const ScreenMode mode = base->fetch_line_buffer_->screen_mode;
if(mode == ScreenMode::Graphics || mode == ScreenMode::YamahaGraphics3) {
// If this is high resolution mode, allow the row number to affect the pattern and colour addresses.
pattern_base &= bits<13>(AddressT(((y & 0xc0) << 5)));
colour_base &= bits<13>(AddressT(((y & 0xc0) << 5)));
colour_base += AddressT(y & 7);
colour_name_shift = 0;
} else {
colour_base &= bits<6, AddressT>();
pattern_base &= bits<11, AddressT>();
}
if(mode == ScreenMode::MultiColour) {
pattern_base += AddressT((y >> 2) & 7);
} else {
pattern_base += AddressT(y & 7);
}
}
void fetch_name(int column) {
base->tile_offset_ = base->ram_[row_base + AddressT(column)];
}
void fetch_pattern(int column) {
base->fetch_line_buffer_->tiles.patterns[column][0] = base->ram_[pattern_base + AddressT(base->tile_offset_ << 3)];
}
void fetch_colour(int column) {
base->fetch_line_buffer_->tiles.patterns[column][1] = base->ram_[colour_base + AddressT((base->tile_offset_ << 3) >> colour_name_shift)];
}
Base<personality> *const base;
const uint8_t y;
const AddressT row_base;
AddressT pattern_base;
AddressT colour_base;
int colour_name_shift;
};
constexpr SpriteMode sprite_mode(ScreenMode screen_mode) {
switch(screen_mode) {
default:
return SpriteMode::Mode2;
case ScreenMode::MultiColour:
case ScreenMode::ColouredText:
case ScreenMode::Graphics:
return SpriteMode::Mode1;
case ScreenMode::SMSMode4:
return SpriteMode::MasterSystem;
}
}
// TODO: should this be extended to include Master System sprites?
template <Personality personality, SpriteMode mode>
class SpriteFetcher {
public:
using AddressT = typename Base<personality>::AddressT;
// The Yamaha VDP adds an additional table when in Sprite Mode 2, the sprite colour
// table, which is intended to fill the 512 bytes before the programmer-located sprite
// attribute table.
//
// It partially enforces this proximity by forcing bits 7 and 8 to 0 in the address of
// the attribute table, and forcing them to 1 but masking out bit 9 for the colour table.
//
// AttributeAddressMask is used to enable or disable that behaviour.
static constexpr AddressT AttributeAddressMask = (mode == SpriteMode::Mode2) ? AddressT(~0x180) : AddressT(~0x000);
SpriteFetcher(Base<personality> *base, uint8_t y) :
base(base),
y(y) {}
void fetch_location(int slot) {
fetch_xy(slot);
if constexpr (mode == SpriteMode::Mode2) {
fetch_xy(slot + 1);
base->name_[0] = name(slot);
base->name_[1] = name(slot + 1);
}
}
void fetch_pattern(int slot) {
switch(mode) {
case SpriteMode::Mode1:
fetch_image(slot, name(slot));
break;
case SpriteMode::Mode2:
fetch_image(slot, base->name_[0]);
fetch_image(slot + 1, base->name_[1]);
break;
}
}
void fetch_y(int sprite) {
const AddressT address = base->sprite_attribute_table_address_ & AttributeAddressMask & bits<7>(AddressT(sprite << 2));
const uint8_t sprite_y = base->ram_[address];
base->posit_sprite(sprite, sprite_y, y);
}
private:
void fetch_xy(int slot) {
auto &buffer = *base->fetch_sprite_buffer_;
buffer.active_sprites[slot].x =
base->ram_[
base->sprite_attribute_table_address_ & AttributeAddressMask & bits<7>(AddressT((buffer.active_sprites[slot].index << 2) | 1))
];
}
uint8_t name(int slot) {
auto &buffer = *base->fetch_sprite_buffer_;
const AddressT address =
base->sprite_attribute_table_address_ &
AttributeAddressMask &
bits<7>(AddressT((buffer.active_sprites[slot].index << 2) | 2));
const uint8_t name = base->ram_[address] & (base->sprites_16x16_ ? ~3 : ~0);
return name;
}
void fetch_image(int slot, uint8_t name) {
uint8_t colour = 0;
auto &sprite = base->fetch_sprite_buffer_->active_sprites[slot];
switch(mode) {
case SpriteMode::Mode1:
// Fetch colour from the attribute table, per this sprite's slot.
colour = base->ram_[
base->sprite_attribute_table_address_ & bits<7>(AddressT((sprite.index << 2) | 3))
];
break;
case SpriteMode::Mode2: {
// Fetch colour from the colour table, per this sprite's slot and row.
const AddressT colour_table_address = (base->sprite_attribute_table_address_ | ~AttributeAddressMask) & AddressT(~0x200);
colour = base->ram_[
colour_table_address &
bits<9>(
AddressT(sprite.index << 4) |
AddressT(sprite.row)
)
];
} break;
}
sprite.image[2] = colour;
sprite.x -= sprite.early_clock();
const AddressT graphic_location = base->sprite_generator_table_address_ & bits<11>(AddressT((name << 3) | sprite.row));
sprite.image[0] = base->ram_[graphic_location];
sprite.image[1] = base->ram_[graphic_location+16];
if constexpr (SpriteBuffer::test_is_filling) {
if(slot == ((mode == SpriteMode::Mode2) ? 7 : 3)) {
base->fetch_sprite_buffer_->is_filling = false;
}
}
}
Base<personality> *const base;
const uint8_t y;
};
template <Personality personality>
struct SMSFetcher {
using AddressT = typename Base<personality>::AddressT;
struct RowInfo {
AddressT pattern_address_base;
AddressT sub_row[2];
};
SMSFetcher(Base<personality> *base, uint8_t y) :
base(base),
storage(static_cast<Storage<personality> *>(base)),
y(y),
horizontal_offset((y >= 16 || !storage->horizontal_scroll_lock_) ? (base->fetch_line_buffer_->latched_horizontal_scroll >> 3) : 0)
{
// Limit address bits in use if this is a SMS2 mode.
const bool is_tall_mode = base->mode_timing_.pixel_lines != 192;
const AddressT pattern_name_address = storage->pattern_name_address_ | (is_tall_mode ? 0x800 : 0);
const AddressT pattern_name_offset = is_tall_mode ? 0x100 : 0;
// Determine row info for the screen both (i) if vertical scrolling is applied; and (ii) if it isn't.
// The programmer can opt out of applying vertical scrolling to the right-hand portion of the display.
const int scrolled_row = (y + storage->latched_vertical_scroll_) % (is_tall_mode ? 256 : 224);
scrolled_row_info.pattern_address_base = (pattern_name_address & bits<11>(AddressT((scrolled_row & ~7) << 3))) - pattern_name_offset;
scrolled_row_info.sub_row[0] = AddressT((scrolled_row & 7) << 2);
scrolled_row_info.sub_row[1] = AddressT(28 ^ ((scrolled_row & 7) << 2));
if(storage->vertical_scroll_lock_) {
static_row_info.pattern_address_base = bits<11>(AddressT(pattern_name_address & ((y & ~7) << 3))) - pattern_name_offset;
static_row_info.sub_row[0] = AddressT((y & 7) << 2);
static_row_info.sub_row[1] = 28 ^ AddressT((y & 7) << 2);
} else static_row_info = scrolled_row_info;
}
void fetch_sprite(int sprite) {
auto &sprite_buffer = *base->fetch_sprite_buffer_;
sprite_buffer.active_sprites[sprite].x =
base->ram_[
storage->sprite_attribute_table_address_ & bits<7>((sprite_buffer.active_sprites[sprite].index << 1) | 0)
] - (storage->shift_sprites_8px_left_ ? 8 : 0);
const uint8_t name = base->ram_[
storage->sprite_attribute_table_address_ & bits<7>((sprite_buffer.active_sprites[sprite].index << 1) | 1)
] & (base->sprites_16x16_ ? ~1 : ~0);
const AddressT graphic_location =
storage->sprite_generator_table_address_ &
bits<13>(AddressT((name << 5) | (sprite_buffer.active_sprites[sprite].row << 2)));
sprite_buffer.active_sprites[sprite].image[0] = base->ram_[graphic_location];
sprite_buffer.active_sprites[sprite].image[1] = base->ram_[graphic_location+1];
sprite_buffer.active_sprites[sprite].image[2] = base->ram_[graphic_location+2];
sprite_buffer.active_sprites[sprite].image[3] = base->ram_[graphic_location+3];
}
void fetch_tile_name(int column) {
const RowInfo &row_info = column < 24 ? scrolled_row_info : static_row_info;
const size_t scrolled_column = (column - horizontal_offset) & 0x1f;
const size_t address = row_info.pattern_address_base + (scrolled_column << 1);
auto &line_buffer = *base->fetch_line_buffer_;
line_buffer.tiles.flags[column] = base->ram_[address+1];
base->tile_offset_ = AddressT(
(((line_buffer.tiles.flags[column]&1) << 8) | base->ram_[address]) << 5
) + row_info.sub_row[(line_buffer.tiles.flags[column]&4) >> 2];
}
void fetch_tile_pattern(int column) {
auto &line_buffer = *base->fetch_line_buffer_;
line_buffer.tiles.patterns[column][0] = base->ram_[base->tile_offset_];
line_buffer.tiles.patterns[column][1] = base->ram_[base->tile_offset_+1];
line_buffer.tiles.patterns[column][2] = base->ram_[base->tile_offset_+2];
line_buffer.tiles.patterns[column][3] = base->ram_[base->tile_offset_+3];
}
void posit_sprite(int sprite) {
base->posit_sprite(sprite, base->ram_[storage->sprite_attribute_table_address_ & bits<8>(AddressT(sprite))], y);
}
Base<personality> *const base;
const Storage<personality> *const storage;
const uint8_t y;
const int horizontal_offset;
RowInfo scrolled_row_info, static_row_info;
};
// MARK: - TMS Sequencers.
template <Personality personality>
struct RefreshSequencer {
RefreshSequencer(Base<personality> *base) : base(base) {}
template <int cycle> void fetch() {
if(cycle < 26 || (cycle & 1) || cycle >= 154) {
base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
}
}
Base<personality> *const base;
};
template <Personality personality>
struct TextSequencer {
template <typename... Args> TextSequencer(Args&&... args) : fetcher(std::forward<Args>(args)...) {}
template <int cycle> void fetch() {
// The first 30 and the final 4 slots are external.
if constexpr (cycle < 30 || cycle >= 150) {
fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
return;
} else {
// For the 120 slots in between follow a three-step pattern of:
constexpr int offset = cycle - 30;
constexpr auto column = AddressT(offset / 3);
switch(offset % 3) {
case 0: // (1) fetch tile name.
fetcher.fetch_name(column);
break;
case 1: // (2) external slot.
fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
break;
case 2: // (3) fetch tile pattern.
fetcher.fetch_pattern(column);
break;
}
}
}
using AddressT = typename Base<personality>::AddressT;
TextFetcher<personality> fetcher;
};
template <Personality personality>
struct CharacterSequencer {
template <typename... Args> CharacterSequencer(Args&&... args) :
character_fetcher(std::forward<Args>(args)...),
sprite_fetcher(std::forward<Args>(args)...) {}
template <int cycle> void fetch() {
if(cycle < 5) {
character_fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
}
if(cycle == 5) {
// Fetch: n1, c2, pat2a, pat2b, y3, x3, n3, c3, pat3a, pat3b.
sprite_fetcher.fetch_pattern(2);
sprite_fetcher.fetch_location(3);
sprite_fetcher.fetch_pattern(3);
}
if(cycle > 14 && cycle < 19) {
character_fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
}
// Fetch 8 new sprite Y coordinates, to begin selecting sprites for next line.
if(cycle == 19) {
sprite_fetcher.fetch_y(0); sprite_fetcher.fetch_y(1); sprite_fetcher.fetch_y(2); sprite_fetcher.fetch_y(3);
sprite_fetcher.fetch_y(4); sprite_fetcher.fetch_y(5); sprite_fetcher.fetch_y(6); sprite_fetcher.fetch_y(7);
}
// Body of line: tiles themselves, plus some additional potential sprites.
if(cycle >= 27 && cycle < 155) {
constexpr int offset = cycle - 27;
constexpr int block = offset >> 2;
constexpr int sub_block = offset & 3;
switch(sub_block) {
case 0: character_fetcher.fetch_name(block); break;
case 1:
if(!(block & 3)) {
character_fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
} else {
constexpr int sprite = 8 + ((block >> 2) * 3) + ((block & 3) - 1);
sprite_fetcher.fetch_y(sprite);
}
break;
case 2:
character_fetcher.fetch_pattern(block);
character_fetcher.fetch_colour(block);
break;
default: break;
}
}
if(cycle >= 155 && cycle < 157) {
character_fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
}
if(cycle == 157) {
// Fetch: y0, x0, n0, c0, pat0a, pat0b, y1, x1, n1, c1, pat1a, pat1b, y2, x2.
sprite_fetcher.fetch_location(0);
sprite_fetcher.fetch_pattern(0);
sprite_fetcher.fetch_location(1);
sprite_fetcher.fetch_pattern(1);
sprite_fetcher.fetch_location(2);
}
}
using AddressT = typename Base<personality>::AddressT;
CharacterFetcher<personality> character_fetcher;
SpriteFetcher<personality, SpriteMode::Mode1> sprite_fetcher;
};
// MARK: - TMS fetch routines.
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_tms_refresh(uint8_t, int start, int end) {
RefreshSequencer sequencer(this);
dispatch<use_end>(sequencer, start, end);
}
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_tms_text(uint8_t y, int start, int end) {
TextSequencer<personality> sequencer(this, y);
dispatch<use_end>(sequencer, start, end);
}
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_tms_character(uint8_t y, int start, int end) {
CharacterSequencer<personality> sequencer(this, y);
dispatch<use_end>(sequencer, start, end);
}
// MARK: - Master System
template <Personality personality>
struct SMSSequencer {
template <typename... Args> SMSSequencer(Args&&... args) : fetcher(std::forward<Args>(args)...) {}
// Cf. https://www.smspower.org/forums/16485-GenesisMode4VRAMTiming with this implementation pegging
// window 0 to HSYNC low.
template <int cycle> void fetch() {
if(cycle < 3) {
fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
}
if(cycle == 3) {
fetcher.fetch_sprite(4);
fetcher.fetch_sprite(5);
fetcher.fetch_sprite(6);
fetcher.fetch_sprite(7);
}
if(cycle == 15 || cycle == 16) {
fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
}
if(cycle == 17) {
fetcher.posit_sprite(0); fetcher.posit_sprite(1); fetcher.posit_sprite(2); fetcher.posit_sprite(3);
fetcher.posit_sprite(4); fetcher.posit_sprite(5); fetcher.posit_sprite(6); fetcher.posit_sprite(7);
fetcher.posit_sprite(8); fetcher.posit_sprite(9); fetcher.posit_sprite(10); fetcher.posit_sprite(11);
fetcher.posit_sprite(12); fetcher.posit_sprite(13); fetcher.posit_sprite(14); fetcher.posit_sprite(15);
}
if(cycle >= 25 && cycle < 153) {
constexpr int offset = cycle - 25;
constexpr int block = offset >> 2;
constexpr int sub_block = offset & 3;
switch(sub_block) {
default: break;
case 0: fetcher.fetch_tile_name(block); break;
case 1:
if(!(block & 3)) {
fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
} else {
constexpr int sprite = (8 + ((block >> 2) * 3) + ((block & 3) - 1)) << 1;
fetcher.posit_sprite(sprite);
fetcher.posit_sprite(sprite+1);
}
break;
case 2: fetcher.fetch_tile_pattern(block); break;
}
}
if(cycle >= 153 && cycle < 157) {
fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
}
if(cycle == 157) {
fetcher.fetch_sprite(0);
fetcher.fetch_sprite(1);
fetcher.fetch_sprite(2);
fetcher.fetch_sprite(3);
}
if(cycle >= 169) {
fetcher.base->do_external_slot(to_internal<personality, Clock::TMSMemoryWindow, Clock::FromStartOfSync>(cycle));
}
}
using AddressT = typename Base<personality>::AddressT;
SMSFetcher<personality> fetcher;
};
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_sms([[maybe_unused]] uint8_t y, [[maybe_unused]] int start, [[maybe_unused]] int end) {
if constexpr (is_sega_vdp(personality)) {
SMSSequencer<personality> sequencer(this, y);
dispatch<use_end>(sequencer, start, end);
}
}
// MARK: - Yamaha
template <Personality personality>
template<ScreenMode mode> void Base<personality>::fetch_yamaha(uint8_t y, int end) {
CharacterFetcher character_fetcher(this, y);
TextFetcher text_fetcher(this, y);
SpriteFetcher<personality, sprite_mode(mode)> sprite_fetcher(this, y);
using Type = typename Storage<personality>::Event::Type;
while(Storage<personality>::next_event_->offset < end) {
switch(Storage<personality>::next_event_->type) {
case Type::External:
do_external_slot(Storage<personality>::next_event_->offset);
break;
case Type::Name:
switch(mode) {
case ScreenMode::Text: {
const auto column = AddressT(Storage<personality>::next_event_->id << 1);
text_fetcher.fetch_name(column, 0);
text_fetcher.fetch_name(column + 1, 1);
} break;
case ScreenMode::YamahaText80: {
const auto column = AddressT(Storage<personality>::next_event_->id << 2);
const auto start = pattern_name_address_ & bits<12>(AddressT((y >> 3) * 80));
name_[0] = ram_[start + column + 0];
name_[1] = ram_[start + column + 1];
name_[2] = ram_[start + column + 2];
name_[3] = ram_[start + column + 3];
} break;
case ScreenMode::Graphics:
case ScreenMode::MultiColour:
case ScreenMode::ColouredText:
character_fetcher.fetch_name(Storage<personality>::next_event_->id);
break;
default: break;
}
break;
case Type::Colour:
switch(mode) {
case ScreenMode::YamahaText80: {
const auto column = AddressT(Storage<personality>::next_event_->id);
const auto address = colour_table_address_ & bits<9>(AddressT((y >> 3) * 10));
auto &line_buffer = *fetch_line_buffer_;
line_buffer.characters.flags[column] = ram_[address + column];
} break;
case ScreenMode::Graphics:
case ScreenMode::MultiColour:
case ScreenMode::ColouredText:
character_fetcher.fetch_colour(Storage<personality>::next_event_->id);
break;
default: break;
}
break;
case Type::Pattern:
switch(mode) {
case ScreenMode::Text: {
const auto column = AddressT(Storage<personality>::next_event_->id << 1);
text_fetcher.fetch_pattern(column, 0);
text_fetcher.fetch_pattern(column + 1, 1);
} break;
case ScreenMode::YamahaText80: {
const auto column = Storage<personality>::next_event_->id << 2;
const auto start = pattern_generator_table_address_ & bits<11>(AddressT(y & 7));
auto &line_buffer = *fetch_line_buffer_;
line_buffer.characters.shapes[column + 0] = ram_[start + AddressT(name_[0] << 3)];
line_buffer.characters.shapes[column + 1] = ram_[start + AddressT(name_[1] << 3)];
line_buffer.characters.shapes[column + 2] = ram_[start + AddressT(name_[2] << 3)];
line_buffer.characters.shapes[column + 3] = ram_[start + AddressT(name_[3] << 3)];
} break;
case ScreenMode::Graphics:
case ScreenMode::MultiColour:
case ScreenMode::ColouredText:
character_fetcher.fetch_pattern(Storage<personality>::next_event_->id);
break;
case ScreenMode::YamahaGraphics3:
// As per comment elsewhere; my _guess_ is that G3 is slotted as if it were
// a bitmap mode, with the three bytes that describe each column fitting into
// the relevant windows.
character_fetcher.fetch_name(Storage<personality>::next_event_->id);
character_fetcher.fetch_colour(Storage<personality>::next_event_->id);
character_fetcher.fetch_pattern(Storage<personality>::next_event_->id);
break;
case ScreenMode::YamahaGraphics4:
case ScreenMode::YamahaGraphics5: {
const int column = Storage<personality>::next_event_->id << 2;
const auto start = bits<15>((y << 7) | column);
auto &line_buffer = *fetch_line_buffer_;
line_buffer.bitmap[column + 0] = ram_[pattern_name_address_ & AddressT(start + 0)];
line_buffer.bitmap[column + 1] = ram_[pattern_name_address_ & AddressT(start + 1)];
line_buffer.bitmap[column + 2] = ram_[pattern_name_address_ & AddressT(start + 2)];
line_buffer.bitmap[column + 3] = ram_[pattern_name_address_ & AddressT(start + 3)];
} break;
case ScreenMode::YamahaGraphics6:
case ScreenMode::YamahaGraphics7: {
const uint8_t *const ram2 = &ram_[65536];
const int column = Storage<personality>::next_event_->id << 3;
const auto start = bits<15>((y << 7) | (column >> 1));
auto &line_buffer = *fetch_line_buffer_;
// Fetch from alternate banks.
line_buffer.bitmap[column + 0] = ram_[pattern_name_address_ & AddressT(start + 0) & 0xffff];
line_buffer.bitmap[column + 1] = ram2[pattern_name_address_ & AddressT(start + 0) & 0xffff];
line_buffer.bitmap[column + 2] = ram_[pattern_name_address_ & AddressT(start + 1) & 0xffff];
line_buffer.bitmap[column + 3] = ram2[pattern_name_address_ & AddressT(start + 1) & 0xffff];
line_buffer.bitmap[column + 4] = ram_[pattern_name_address_ & AddressT(start + 2) & 0xffff];
line_buffer.bitmap[column + 5] = ram2[pattern_name_address_ & AddressT(start + 2) & 0xffff];
line_buffer.bitmap[column + 6] = ram_[pattern_name_address_ & AddressT(start + 3) & 0xffff];
line_buffer.bitmap[column + 7] = ram2[pattern_name_address_ & AddressT(start + 3) & 0xffff];
} break;
default: break;
}
break;
case Type::SpriteY:
switch(mode) {
case ScreenMode::Blank:
case ScreenMode::Text:
case ScreenMode::YamahaText80:
// Ensure the compiler can discard character_fetcher in these modes.
break;
default:
sprite_fetcher.fetch_y(Storage<personality>::next_event_->id);
break;
}
break;
case Type::SpriteLocation:
switch(mode) {
case ScreenMode::Blank:
case ScreenMode::Text:
case ScreenMode::YamahaText80:
// Ensure the compiler can discard character_fetcher in these modes.
break;
default:
sprite_fetcher.fetch_location(Storage<personality>::next_event_->id);
break;
}
break;
case Type::SpritePattern:
switch(mode) {
case ScreenMode::Blank:
case ScreenMode::Text:
case ScreenMode::YamahaText80:
// Ensure the compiler can discard character_fetcher in these modes.
break;
default:
sprite_fetcher.fetch_pattern(Storage<personality>::next_event_->id);
break;
}
break;
default: break;
}
++Storage<personality>::next_event_;
}
}
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_yamaha(uint8_t y, int, int end) {
if constexpr (is_yamaha_vdp(personality)) {
// Dispatch according to [supported] screen mode.
#define Dispatch(mode) case mode: fetch_yamaha<mode>(y, end); break;
switch(fetch_line_buffer_->screen_mode) {
default: break;
Dispatch(ScreenMode::Blank);
Dispatch(ScreenMode::Text);
Dispatch(ScreenMode::MultiColour);
Dispatch(ScreenMode::ColouredText);
Dispatch(ScreenMode::Graphics);
Dispatch(ScreenMode::YamahaText80);
Dispatch(ScreenMode::YamahaGraphics3);
Dispatch(ScreenMode::YamahaGraphics4);
Dispatch(ScreenMode::YamahaGraphics5);
Dispatch(ScreenMode::YamahaGraphics6);
Dispatch(ScreenMode::YamahaGraphics7);
}
#undef Dispatch
}
}
// MARK: - Mega Drive
// TODO.
}
#endif /* Fetch_hpp */

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//
// LineBuffer.hpp
// Clock Signal
//
// Created by Thomas Harte on 12/02/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef LineBuffer_hpp
#define LineBuffer_hpp
#include "AccessEnums.hpp"
namespace TI::TMS {
// Temporary buffers collect a representation of each line prior to pixel serialisation.
struct SpriteBuffer {
// An active sprite is one that has been selected for composition onto
// _this_ line.
struct ActiveSprite {
int index = 0; // The original in-table index of this sprite.
int row = 0; // The row of the sprite that should be drawn.
int x = 0; // The sprite's x position on screen.
uint8_t image[4]; // Up to four bytes of image information.
//
// In practice:
//
// Master System mode: the four bytes of this 8x8 sprite;
// TMS and Yamaha: [0] = the left half of this sprite; [1] = the right side (if 16x16 sprites enabled); [2] = colour, early-clock bit, etc.
int shift_position = 0; // An offset representing how much of the image information has already been drawn.
// Yamaha helpers.
bool opaque() const {
return !(image[2] & 0x40);
}
/// @returns @c 0x20 if this sprite should generate collisions; @c 0x00 otherwise.
int collision_bit() const {
return ((image[2] & 0x20) | ((image[2] & 0x40) >> 1)) ^ 0x20;
}
// Yamaha and TMS helpers.
int early_clock() const {
return (image[2] & 0x80) >> 2;
}
} active_sprites[8];
int active_sprite_slot = 0; // A pointer to the slot into which a new active sprite will be deposited, if required.
bool sprites_stopped = false; // A special TMS feature is that a sentinel value can be used to prevent any further sprites
// being evaluated for display. This flag determines whether the sentinel has yet been reached.
uint8_t sprite_terminator = 0;
#ifndef NDEBUG
static constexpr bool test_is_filling = true;
#else
static constexpr bool test_is_filling = false;
#endif
bool is_filling = false;
void reset_sprite_collection();
};
struct LineBuffer {
LineBuffer() {}
// The fetch mode describes the proper timing diagram for this line;
// screen mode captures proper output mode.
FetchMode fetch_mode = FetchMode::Text;
ScreenMode screen_mode = ScreenMode::Text;
VerticalState vertical_state = VerticalState::Blank;
SpriteBuffer *sprites = nullptr;
// Holds the horizontal scroll position to apply to this line;
// of those VDPs currently implemented, affects the Master System only.
uint8_t latched_horizontal_scroll = 0;
// The names array holds pattern names, as an offset into memory, and
// potentially flags also.
union {
// This struct captures maximal potential detail across the TMS9918
// and Sega VDP for tiled modes (plus multicolour).
struct {
uint8_t flags[32]{};
// The patterns array holds tile patterns, corresponding 1:1 with names.
// Four bytes per pattern is the maximum required by any
// currently-implemented VDP.
uint8_t patterns[32][4]{};
} tiles;
// The Yamaha and TMS both have text modes, with the former going up to
// 80 columns plus 10 bytes of colour-esque flags.
struct {
uint8_t shapes[80];
uint8_t flags[10];
} characters;
// The Yamaha VDP also has a variety of bitmap modes,
// the widest of which is 512px @ 4bpp.
uint8_t bitmap[256];
};
/*
Horizontal layout (on a 342-cycle clock):
15 cycles right border
58 cycles blanking & sync
13 cycles left border
... i.e. to cycle 86, then:
border up to first_pixel_output_column;
pixels up to next_border_column;
border up to the end.
e.g. standard 256-pixel modes will want to set
first_pixel_output_column = 86, next_border_column = 342.
*/
int first_pixel_output_column = 94;
int next_border_column = 334;
int pixel_count = 256;
};
struct LineBufferPointer {
int row = 0, column = 0;
};
}
#endif /* LineBuffer_hpp */

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//
// LineLayout.hpp
// Clock Signal
//
// Created by Thomas Harte on 18/05/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef LineLayout_h
#define LineLayout_h
namespace TI::TMS {
template <Personality personality, typename Enable = void> struct LineLayout;
// Line layout is:
//
// [0, EndOfSync] sync
// (EndOfSync, StartOfColourBurst] blank
// (StartOfColourBurst, EndOfColourBurst] colour burst
// (EndOfColourBurst, EndOfLeftErase] blank
// (EndOfLeftErase, EndOfLeftBorder] border colour
// (EndOfLeftBorder, EndOfPixels] pixel content
// (EndOfPixels, EndOfRightBorder] border colour
// [EndOfRightBorder, <end of line>] blank
//
// ... with minor caveats:
// * horizontal adjust on the Yamaha VDPs is applied to EndOfLeftBorder and EndOfPixels;
// * the Sega VDPs may programatically extend the left border; and
// * text mode on all VDPs adjusts border width.
template <Personality personality> struct LineLayout<personality, std::enable_if_t<is_classic_vdp(personality)>> {
constexpr static int StartOfSync = 0;
constexpr static int EndOfSync = 26;
constexpr static int StartOfColourBurst = 29;
constexpr static int EndOfColourBurst = 43;
constexpr static int EndOfLeftErase = 50;
constexpr static int EndOfLeftBorder = 63;
constexpr static int EndOfPixels = 319;
constexpr static int EndOfRightBorder = 334;
constexpr static int CyclesPerLine = 342;
constexpr static int TextModeEndOfLeftBorder = 69;
constexpr static int TextModeEndOfPixels = 309;
constexpr static int ModeLatchCycle = 36; // Just a guess; correlates with the known 144 for the Yamaha VDPs,
// and falls into the collection gap between the final sprite
// graphics and the initial tiles or pixels.
/// The number of internal cycles that must elapse between a request to read or write and
/// it becoming a candidate for action.
constexpr static int VRAMAccessDelay = 6;
};
template <Personality personality> struct LineLayout<personality, std::enable_if_t<is_yamaha_vdp(personality)>> {
constexpr static int StartOfSync = 0;
constexpr static int EndOfSync = 100;
constexpr static int StartOfColourBurst = 113;
constexpr static int EndOfColourBurst = 167;
constexpr static int EndOfLeftErase = 202;
constexpr static int EndOfLeftBorder = 258;
constexpr static int EndOfPixels = 1282;
constexpr static int EndOfRightBorder = 1341;
constexpr static int CyclesPerLine = 1368;
constexpr static int TextModeEndOfLeftBorder = 294;
constexpr static int TextModeEndOfPixels = 1254;
constexpr static int ModeLatchCycle = 144;
/// The number of internal cycles that must elapse between a request to read or write and
/// it becoming a candidate for action.
constexpr static int VRAMAccessDelay = 16;
};
}
#endif /* LineLayout_h */

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//
// PersonalityTraits.hpp
// Clock Signal
//
// Created by Thomas Harte on 06/01/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef PersonalityTraits_hpp
#define PersonalityTraits_hpp
namespace TI::TMS {
// Genus determinants for the various personalityes.
constexpr bool is_sega_vdp(Personality p) {
return p >= Personality::SMSVDP;
}
constexpr bool is_yamaha_vdp(Personality p) {
return p == Personality::V9938 || p == Personality::V9958;
}
// i.e. one with the original internal timings.
constexpr bool is_classic_vdp(Personality p) {
return
p == Personality::TMS9918A ||
p == Personality::SMSVDP ||
p == Personality::SMS2VDP ||
p == Personality::GGVDP;
}
constexpr size_t memory_size(Personality p) {
switch(p) {
case TI::TMS::TMS9918A:
case TI::TMS::SMSVDP:
case TI::TMS::SMS2VDP:
case TI::TMS::GGVDP: return 16 * 1024;
case TI::TMS::MDVDP: return 64 * 1024;
case TI::TMS::V9938: return 128 * 1024;
case TI::TMS::V9958: return 192 * 1024;
}
}
constexpr size_t memory_mask(Personality p) {
return memory_size(p) - 1;
}
}
#endif /* PersonalityTraits_hpp */

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//
//
// Storage.hpp
// Clock Signal
//
// Created by Thomas Harte on 12/02/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef Storage_h
#define Storage_h
#include "LineBuffer.hpp"
#include "YamahaCommands.hpp"
#include <optional>
#include <vector>
namespace TI::TMS {
/// A container for personality-specific storage; see specific instances below.
template <Personality personality, typename Enable = void> struct Storage {
};
template <> struct Storage<Personality::TMS9918A> {
using AddressT = uint16_t;
void begin_line(ScreenMode, bool) {}
};
struct YamahaFetcher {
public:
/// Describes an _observable_ memory access event. i.e. anything that it is safe
/// (and convenient) to treat as atomic in between external slots.
struct Event {
/// Offset of the _beginning_ of the event. Not completely arbitrarily: this is when
/// external data must be ready by in order to take part in those slots.
uint16_t offset = 1368;
enum class Type: uint8_t {
/// A slot for reading or writing data on behalf of the CPU or the command engine.
External,
//
// Sprites.
//
SpriteY,
SpriteLocation,
SpritePattern,
//
// Backgrounds.
//
Name,
Colour,
Pattern,
} type = Type::External;
uint8_t id = 0;
constexpr Event(Type type, uint8_t id = 0) noexcept :
type(type),
id(id) {}
constexpr Event() noexcept {}
};
// State that tracks fetching position within a line.
const Event *next_event_ = nullptr;
// Sprite collection state.
bool sprites_enabled_ = true;
protected:
/// @return 1 + the number of times within a line that @c GeneratorT produces an event.
template <typename GeneratorT> static constexpr size_t events_size() {
size_t size = 0;
for(int c = 0; c < 1368; c++) {
const auto event_type = GeneratorT::event(c);
size += event_type.has_value();
}
return size + 1;
}
/// @return An array of all events generated by @c GeneratorT in line order.
template <typename GeneratorT, size_t size = events_size<GeneratorT>()>
static constexpr std::array<Event, size> events() {
std::array<Event, size> result{};
size_t index = 0;
for(int c = 0; c < 1368; c++) {
// Specific personality doesn't matter here; both Yamahas use the same internal timing.
const auto event = GeneratorT::event(from_internal<Personality::V9938, Clock::FromStartOfSync>(c));
if(!event) {
continue;
}
result[index] = *event;
result[index].offset = uint16_t(c);
++index;
}
result[index] = Event();
return result;
}
struct StandardGenerators {
static constexpr std::optional<Event> external_every_eight(int index) {
if(index & 7) return std::nullopt;
return Event::Type::External;
}
};
struct RefreshGenerator {
static constexpr std::optional<Event> event(int grauw_index) {
// From 0 to 126: CPU/CMD slots at every cycle divisible by 8.
if(grauw_index < 126) {
return StandardGenerators::external_every_eight(grauw_index - 0);
}
// From 164 to 1234: eight-cycle windows, the first 15 of each 16 being
// CPU/CMD and the final being refresh.
if(grauw_index >= 164 && grauw_index < 1234) {
const int offset = grauw_index - 164;
if(offset & 7) return std::nullopt;
if(((offset >> 3) & 15) == 15) return std::nullopt;
return Event::Type::External;
}
// From 1268 to 1330: CPU/CMD slots at every cycle divisible by 8.
if(grauw_index >= 1268 && grauw_index < 1330) {
return StandardGenerators::external_every_eight(grauw_index - 1268);
}
// A CPU/CMD at 1334.
if(grauw_index == 1334) {
return Event::Type::External;
}
// From 1344 to 1366: CPU/CMD slots every cycle divisible by 8.
if(grauw_index >= 1344 && grauw_index < 1366) {
return StandardGenerators::external_every_eight(grauw_index - 1344);
}
// Otherwise: nothing.
return std::nullopt;
}
};
template <bool include_sprites> struct BitmapGenerator {
static constexpr std::optional<Event> event(int grauw_index) {
if(!include_sprites) {
// Various standard zones of one-every-eight external slots.
if(grauw_index < 124) {
return StandardGenerators::external_every_eight(grauw_index + 2);
}
if(grauw_index > 1266) {
return StandardGenerators::external_every_eight(grauw_index - 1266);
}
} else {
// This records collection points for all data for selected sprites.
// There's only four of them (each site covering two sprites),
// so it's clearer just to be explicit.
//
// There's also a corresponding number of extra external slots to spell out.
switch(grauw_index) {
default: break;
case 1238: return Event(Event::Type::SpriteLocation, 0);
case 1302: return Event(Event::Type::SpriteLocation, 2);
case 2: return Event(Event::Type::SpriteLocation, 4);
case 66: return Event(Event::Type::SpriteLocation, 6);
case 1270: return Event(Event::Type::SpritePattern, 0);
case 1338: return Event(Event::Type::SpritePattern, 2);
case 34: return Event(Event::Type::SpritePattern, 4);
case 98: return Event(Event::Type::SpritePattern, 6);
case 1264: case 1330: case 28: case 92:
return Event::Type::External;
}
}
if(grauw_index >= 162 && grauw_index < 176) {
return StandardGenerators::external_every_eight(grauw_index - 162);
}
// Everywhere else the pattern is:
//
// external or sprite y, external, data block
//
// Subject to caveats:
//
// 1) the first data block is just a dummy fetch with no side effects,
// so this emulator declines to record it; and
// 2) every fourth block, the second external is actually a refresh.
//
if(grauw_index >= 182 && grauw_index < 1238) {
const int offset = grauw_index - 182;
const int block = offset / 32;
const int sub_block = offset & 31;
switch(sub_block) {
default: return std::nullopt;
case 0:
if(include_sprites) {
// Don't include the sprite post-amble (i.e. a spurious read with no side effects).
if(block < 32) {
return Event(Event::Type::SpriteY, uint8_t(block));
}
} else {
return Event::Type::External;
}
case 6:
if((block & 3) != 3) {
return Event::Type::External;
}
break;
case 12:
if(block) {
return Event(Event::Type::Pattern, uint8_t(block - 1));
}
break;
}
}
return std::nullopt;
}
};
struct TextGenerator {
static constexpr std::optional<Event> event(int grauw_index) {
// Capture various one-in-eight zones.
if(grauw_index < 72) {
return StandardGenerators::external_every_eight(grauw_index - 2);
}
if(grauw_index >= 166 && grauw_index < 228) {
return StandardGenerators::external_every_eight(grauw_index - 166);
}
if(grauw_index >= 1206 && grauw_index < 1332) {
return StandardGenerators::external_every_eight(grauw_index - 1206);
}
if(grauw_index == 1336) {
return Event::Type::External;
}
if(grauw_index >= 1346) {
return StandardGenerators::external_every_eight(grauw_index - 1346);
}
// Elsewhere...
if(grauw_index >= 246) {
const int offset = grauw_index - 246;
const int block = offset / 48;
const int sub_block = offset % 48;
switch(sub_block) {
default: break;
case 0: return Event(Event::Type::Name, uint8_t(block));
case 18: return (block & 1) ? Event::Type::External : Event(Event::Type::Colour, uint8_t(block >> 1));
case 24: return Event(Event::Type::Pattern, uint8_t(block));
}
}
return std::nullopt;
}
};
struct CharacterGenerator {
static constexpr std::optional<Event> event(int grauw_index) {
// Grab sprite events.
switch(grauw_index) {
default: break;
case 1242: return Event(Event::Type::SpriteLocation, 0);
case 1306: return Event(Event::Type::SpriteLocation, 1);
case 6: return Event(Event::Type::SpriteLocation, 2);
case 70: return Event(Event::Type::SpriteLocation, 3);
case 1274: return Event(Event::Type::SpritePattern, 0);
case 1342: return Event(Event::Type::SpritePattern, 1);
case 38: return Event(Event::Type::SpritePattern, 2);
case 102: return Event(Event::Type::SpritePattern, 3);
case 1268: case 1334: case 32: case 96: return Event::Type::External;
}
if(grauw_index >= 166 && grauw_index < 180) {
return StandardGenerators::external_every_eight(grauw_index - 166);
}
if(grauw_index >= 182 && grauw_index < 1238) {
const int offset = grauw_index - 182;
const int block = offset / 32;
const int sub_block = offset & 31;
switch(sub_block) {
case 0: if(block > 0) return Event(Event::Type::Name, uint8_t(block - 1));
case 6: if((sub_block & 3) != 3) return Event::Type::External;
case 12: if(block < 32) return Event(Event::Type::SpriteY, uint8_t(block));
case 18: if(block > 0) return Event(Event::Type::Pattern, uint8_t(block - 1));
case 24: if(block > 0) return Event(Event::Type::Colour, uint8_t(block - 1));
}
}
return std::nullopt;
}
};
};
struct YamahaCommandState {
CommandContext command_context_;
ModeDescription mode_description_;
std::unique_ptr<Command> command_ = nullptr;
enum class CommandStep {
None,
CopySourcePixelToStatus,
ReadSourcePixel,
ReadDestinationPixel,
WritePixel,
ReadSourceByte,
WriteByte,
};
CommandStep next_command_step_ = CommandStep::None;
int minimum_command_column_ = 0;
uint8_t command_latch_ = 0;
void update_command_step(int current_column) {
if(!command_) {
next_command_step_ = CommandStep::None;
return;
}
if(command_->done()) {
command_ = nullptr;
next_command_step_ = CommandStep::None;
return;
}
minimum_command_column_ = current_column + command_->cycles;
switch(command_->access) {
case Command::AccessType::ReadPoint:
next_command_step_ = CommandStep::CopySourcePixelToStatus;
break;
case Command::AccessType::CopyPoint:
next_command_step_ = CommandStep::ReadSourcePixel;
break;
case Command::AccessType::PlotPoint:
next_command_step_ = CommandStep::ReadDestinationPixel;
break;
case Command::AccessType::WaitForColourReceipt:
// i.e. nothing to do until a colour is received.
next_command_step_ = CommandStep::None;
break;
case Command::AccessType::CopyByte:
next_command_step_ = CommandStep::ReadSourceByte;
break;
case Command::AccessType::WriteByte:
next_command_step_ = CommandStep::WriteByte;
break;
}
}
};
// Yamaha-specific storage.
template <Personality personality> struct Storage<personality, std::enable_if_t<is_yamaha_vdp(personality)>>: public YamahaFetcher, public YamahaCommandState {
using AddressT = uint32_t;
// The Yamaha's (optional in real hardware) additional 64kb of expansion RAM.
// This is a valid target and source for the command engine, but can't be used as a source for current video data.
std::array<uint8_t, 65536> expansion_ram_;
// Register indirections.
int selected_status_ = 0;
int indirect_register_ = 0;
bool increment_indirect_register_ = false;
// Output horizontal and vertical adjustment, plus the selected vertical offset (i.e. hardware scroll).
int adjustment_[2]{};
uint8_t vertical_offset_ = 0;
// The palette, plus a shadow copy in which colour 0 is not the current palette colour 0,
// but is rather the current global background colour. This simplifies flow when colour 0
// is set as transparent.
std::array<uint32_t, 16> palette_{};
std::array<uint32_t, 16> background_palette_{};
bool solid_background_ = true;
// Transient state for palette setting.
uint8_t new_colour_ = 0;
uint8_t palette_entry_ = 0;
bool palette_write_phase_ = false;
// Recepticle for all five bits of the current screen mode.
uint8_t mode_ = 0;
// Used ephemerally during drawing to compound sprites with the 'CC'
// (compound colour?) bit set.
uint8_t sprite_cache_[8][32]{};
// Text blink colours.
uint8_t blink_text_colour_ = 0;
uint8_t blink_background_colour_ = 0;
// Blink state (which is also affects even/odd page display in applicable modes).
int in_blink_ = 1;
uint8_t blink_periods_ = 0;
uint8_t blink_counter_ = 0;
// Additional things exposed by status registers.
uint8_t colour_status_ = 0;
uint16_t colour_location_ = 0;
uint16_t collision_location_[2]{};
bool line_matches_ = false;
Storage() noexcept {
// Seed to something valid.
next_event_ = refresh_events.data();
}
/// Resets line-ephemeral state for a new line.
void begin_line(ScreenMode mode, bool is_refresh) {
if(is_refresh) {
next_event_ = refresh_events.data();
return;
}
switch(mode) {
case ScreenMode::YamahaText80:
case ScreenMode::Text:
next_event_ = text_events.data();
break;
case ScreenMode::MultiColour:
case ScreenMode::YamahaGraphics1:
case ScreenMode::YamahaGraphics2:
next_event_ = character_events.data();
break;
case ScreenMode::YamahaGraphics3: // TODO: verify; my guess is that G3 is timed like a bitmap mode
// in order to fit the pattern for sprite mode 2. Just a guess.
default:
next_event_ = sprites_enabled_ ? sprites_events.data() : no_sprites_events.data();
break;
}
}
private:
static constexpr auto refresh_events = events<RefreshGenerator>();
static constexpr auto no_sprites_events = events<BitmapGenerator<false>>();
static constexpr auto sprites_events = events<BitmapGenerator<true>>();
static constexpr auto text_events = events<TextGenerator>();
static constexpr auto character_events = events<CharacterGenerator>();
};
// Master System-specific storage.
template <Personality personality> struct Storage<personality, std::enable_if_t<is_sega_vdp(personality)>> {
using AddressT = uint16_t;
// The SMS VDP has a programmer-set colour palette, with a dedicated patch of RAM. But the RAM is only exactly
// fast enough for the pixel clock. So when the programmer writes to it, that causes a one-pixel glitch; there
// isn't the bandwidth for the read both write to occur simultaneously. The following buffer therefore keeps
// track of pending collisions, for visual reproduction.
struct CRAMDot {
LineBufferPointer location;
uint32_t value;
};
std::vector<CRAMDot> upcoming_cram_dots_;
// The Master System's additional colour RAM.
uint32_t colour_ram_[32];
bool cram_is_selected_ = false;
// Programmer-set flags.
bool vertical_scroll_lock_ = false;
bool horizontal_scroll_lock_ = false;
bool hide_left_column_ = false;
bool shift_sprites_8px_left_ = false;
bool mode4_enable_ = false;
uint8_t horizontal_scroll_ = 0;
uint8_t vertical_scroll_ = 0;
// Holds the vertical scroll position for this frame; this is latched
// once and cannot dynamically be changed until the next frame.
uint8_t latched_vertical_scroll_ = 0;
// Various resource addresses with VDP-version-specific modifications
// built in.
AddressT pattern_name_address_;
AddressT sprite_attribute_table_address_;
AddressT sprite_generator_table_address_;
void begin_line(ScreenMode, bool) {}
};
}
#endif /* Storage_h */

384
Components/9918/Implementation/YamahaCommands.hpp Normal file
View File

@ -0,0 +1,384 @@
//
// YamahaCommands.hpp
// Clock Signal
//
// Created by Thomas Harte on 26/01/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef YamahaCommands_hpp
#define YamahaCommands_hpp
#include "AccessEnums.hpp"
namespace TI::TMS {
// MARK: - Generics.
struct Vector {
int v[2]{};
template <int offset, bool high> void set(uint8_t value) {
constexpr uint8_t mask = high ? (offset ? 0x3 : 0x1) : 0xff;
constexpr int shift = high ? 8 : 0;
v[offset] = (v[offset] & ~(mask << shift)) | ((value & mask) << shift);
}
template <int offset> void add(int amount) {
v[offset] += amount;
if constexpr (offset == 1) {
v[offset] &= 0x3ff;
} else {
v[offset] &= 0x1ff;
}
}
Vector & operator += (const Vector &rhs) {
add<0>(rhs.v[0]);
add<1>(rhs.v[1]);
return *this;
}
};
struct Colour {
void set(uint8_t value) {
colour = value;
colour4bpp = uint8_t((value & 0xf) | (value << 4));
colour2bpp = uint8_t((colour4bpp & 0x33) | ((colour4bpp & 0x33) << 2));
}
void reset() {
colour = 0x00;
colour4bpp = 0xff;
}
bool has_value() const {
return (colour & 0xf) == (colour4bpp & 0xf);
}
/// Colour as written by the CPU.
uint8_t colour = 0x00;
/// The low four bits of the CPU-written colour, repeated twice.
uint8_t colour4bpp = 0xff;
/// The low two bits of the CPU-written colour, repeated four times.
uint8_t colour2bpp = 0xff;
};
struct CommandContext {
Vector source;
Vector destination;
Vector size;
uint8_t arguments = 0;
Colour colour;
Colour latched_colour;
enum class LogicalOperation {
Copy = 0b0000,
And = 0b0001,
Or = 0b0010,
Xor = 0b0011,
Not = 0b0100,
};
LogicalOperation pixel_operation;
bool test_source;
};
struct ModeDescription {
int width = 256;
int pixels_per_byte = 4;
bool rotate_address = false;
int start_cycle = 0;
int end_cycle = 0;
};
struct Command {
// In net:
//
// This command is blocked until @c access has been performed, reading
// from or writing to @c value. It should not be performed until at least
// @c cycles have passed.
enum class AccessType {
/// Plots a single pixel of the current contextual colour at @c destination,
/// which occurs as a read, then a 24-cycle gap, then a write.
PlotPoint,
/// Blocks until the next CPU write to the colour register.
WaitForColourReceipt,
/// Writes an entire byte to the address containing the current @c destination.
WriteByte,
/// Copies a single pixel from @c source location to @c destination,
/// being a read, a 32-cycle gap, then a PlotPoint.
CopyPoint,
/// Copies a complete byte from @c source location to @c destination,
/// being a read, a 24-cycle gap, then a write.
CopyByte,
/// Copies a single pixel from @c source to the colour status register.
ReadPoint,
// ReadByte,
// WaitForColourSend,
};
AccessType access = AccessType::PlotPoint;
int cycles = 0;
bool is_cpu_transfer = false;
bool y_only = false;
/// Current command parameters.
CommandContext &context;
ModeDescription &mode_description;
Command(CommandContext &context, ModeDescription &mode_description) : context(context), mode_description(mode_description) {}
virtual ~Command() {}
/// @returns @c true if all output from this command is done; @c false otherwise.
virtual bool done() = 0;
/// Repopulates the fields above with the next action to take, being provided with the
/// number of pixels per byte in the current screen mode.
virtual void advance() = 0;
protected:
template <int axis, bool include_source> void advance_axis(int offset = 1) {
context.destination.add<axis>(context.arguments & (0x4 << axis) ? -offset : offset);
if constexpr (include_source) {
context.source.add<axis>(context.arguments & (0x4 << axis) ? -offset : offset);
}
}
};
namespace Commands {
// MARK: - Line drawing.
/// Implements the LINE command, which is plain-old Bresenham.
///
/// Per Grauw timing is:
///
/// * 88 cycles between every pixel plot;
/// * plus an additional 32 cycles if a step along the minor axis is taken.
struct Line: public Command {
public:
Line(CommandContext &context, ModeDescription &mode_description) : Command(context, mode_description) {
// context.destination = start position;
// context.size.v[0] = long side dots;
// context.size.v[1] = short side dots;
// context.arguments => direction
position_ = context.size.v[1];
numerator_ = position_ << 1;
denominator_ = context.size.v[0] << 1;
cycles = 32;
access = AccessType::PlotPoint;
}
bool done() final {
return !context.size.v[0];
}
void advance() final {
--context.size.v[0];
cycles = 88;
// b0: 1 => long direction is y;
// 0 => long direction is x.
//
// b2: 1 => x direction is left;
// 0 => x direction is right.
//
// b3: 1 => y direction is up;
// 0 => y direction is down.
if(context.arguments & 0x1) {
advance_axis<1, false>();
} else {
advance_axis<0, false>();
}
position_ -= numerator_;
if(position_ < 0) {
position_ += denominator_;
cycles += 32;
if(context.arguments & 0x1) {
advance_axis<0, false>();
} else {
advance_axis<1, false>();
}
}
}
private:
int position_, numerator_, denominator_, duration_;
};
// MARK: - Single pixel manipulation.
/// Implements the PSET command, which plots a single pixel and POINT, which reads one.
///
/// No timings are documented, so this'll output or input as quickly as possible.
template <bool is_read> struct Point: public Command {
public:
Point(CommandContext &context, ModeDescription &mode_description) : Command(context, mode_description) {
cycles = 0; // TODO.
access = is_read ? AccessType::ReadPoint : AccessType::PlotPoint;
}
bool done() final {
return done_;
}
void advance() final {
done_ = true;
}
private:
bool done_ = false;
};
// MARK: - Rectangular base.
/// Useful base class for anything that does logical work in a rectangle.
template <bool logical, bool include_source> struct Rectangle: public Command {
public:
Rectangle(CommandContext &context, ModeDescription &mode_description) : Command(context, mode_description) {
if constexpr (include_source) {
start_x_[0] = context.source.v[0];
}
start_x_[1] = context.destination.v[0];
width_ = context.size.v[0];
if(!width_) {
// Width = 0 => maximal width for this mode.
// (aside: it's still unclear to me whether commands are
// automatically clipped to the display; I think so but
// don't want to spend any time on it until I'm certain)
// context.size.v[0] = width_ = mode_description.width;
}
}
/// Advances the current destination and, if @c include_source is @c true also the source;
/// @returns @c true if a new row was started; @c false otherwise.
bool advance_pixel() {
if constexpr (logical) {
advance_axis<0, include_source>();
--context.size.v[0];
if(context.size.v[0]) {
return false;
}
} else {
advance_axis<0, include_source>(mode_description.pixels_per_byte);
context.size.v[0] -= mode_description.pixels_per_byte;
if(context.size.v[0] & ~(mode_description.pixels_per_byte - 1)) {
return false;
}
}
context.size.v[0] = width_;
if constexpr (include_source) {
context.source.v[0] = start_x_[0];
}
context.destination.v[0] = start_x_[1];
advance_axis<1, include_source>();
--context.size.v[1];
return true;
}
bool done() final {
return !context.size.v[1] || !width_;
}
private:
int start_x_[2]{}, width_ = 0;
};
// MARK: - Rectangular moves to/from CPU.
template <bool logical> struct MoveFromCPU: public Rectangle<logical, false> {
MoveFromCPU(CommandContext &context, ModeDescription &mode_description) : Rectangle<logical, false>(context, mode_description) {
Command::is_cpu_transfer = true;
// This command is started with the first colour ready to transfer.
Command::cycles = 32;
Command::access = logical ? Command::AccessType::PlotPoint : Command::AccessType::WriteByte;
}
void advance() final {
switch(Command::access) {
default: break;
case Command::AccessType::WaitForColourReceipt:
Command::cycles = 32;
Command::access = logical ? Command::AccessType::PlotPoint : Command::AccessType::WriteByte;
break;
case Command::AccessType::WriteByte:
case Command::AccessType::PlotPoint:
Command::cycles = 0;
Command::access = Command::AccessType::WaitForColourReceipt;
if(Rectangle<logical, false>::advance_pixel()) {
Command::cycles = 64;
// TODO: I'm not sure this will be honoured per the outer wrapping.
}
break;
}
}
};
// MARK: - Rectangular moves within VRAM.
enum class MoveType {
Logical,
HighSpeed,
YOnly,
};
template <MoveType type> struct Move: public Rectangle<type == MoveType::Logical, true> {
static constexpr bool is_logical = type == MoveType::Logical;
static constexpr bool is_y_only = type == MoveType::YOnly;
using RectangleBase = Rectangle<is_logical, true>;
Move(CommandContext &context, ModeDescription &mode_description) : RectangleBase(context, mode_description) {
Command::access = is_logical ? Command::AccessType::CopyPoint : Command::AccessType::CopyByte;
Command::cycles = is_y_only ? 0 : 64;
Command::y_only = is_y_only;
}
void advance() final {
Command::cycles = is_y_only ? 40 : 64;
if(RectangleBase::advance_pixel()) {
Command::cycles += is_y_only ? 0 : 64;
}
}
};
// MARK: - Rectangular fills.
template <bool logical> struct Fill: public Rectangle<logical, false> {
using RectangleBase = Rectangle<logical, false>;
Fill(CommandContext &context, ModeDescription &mode_description) : RectangleBase(context, mode_description) {
Command::cycles = logical ? 64 : 56;
Command::access = logical ? Command::AccessType::PlotPoint : Command::AccessType::WriteByte;
}
void advance() final {
Command::cycles = logical ? 72 : 48;
if(RectangleBase::advance_pixel()) {
Command::cycles += logical ? 64 : 56;
}
}
};
}
}
#endif /* YamahaCommands_hpp */

4
Components/AY38910/AY38910.hpp
View File

@ -14,8 +14,7 @@
#include "../../Reflection/Struct.hpp"
namespace GI {
namespace AY38910 {
namespace GI::AY38910 {
/*!
A port handler provides all input for an AY's two 8-bit ports, and may optionally receive
@ -219,7 +218,6 @@ struct State: public Reflection::StructImpl<State> {
}
};
}
}
#endif /* AY_3_8910_hpp */

6
Components/AppleClock/AppleClock.hpp
View File

@ -11,8 +11,7 @@
#include <array>
namespace Apple {
namespace Clock {
namespace Apple::Clock {
/*!
Models Apple's real-time clocks, as contained in the Macintosh and IIgs.
@ -196,7 +195,7 @@ class SerialClock: public ClockStorage {
Sets the current clock and data inputs to the clock.
*/
void set_input(bool clock, bool data) {
// The data line is valid when the clock transitions to level 0.
// The data line is valid when the clock transitions to level 0.
if(clock && !previous_clock_) {
// Shift into the command_ register, no matter what.
command_ = uint16_t((command_ << 1) | (data ? 1 : 0));
@ -293,7 +292,6 @@ class ParallelClock: public ClockStorage {
uint8_t control_;
};
}
}
#endif /* Apple_RealTimeClock_hpp */

4
Components/DiskII/DiskII.cpp
View File

@ -13,7 +13,7 @@
using namespace Apple;
namespace {
namespace {
const uint8_t input_command = 0x4; // i.e. Q6
const uint8_t input_mode = 0x8; // i.e. Q7
const uint8_t input_flux = 0x1;
@ -144,7 +144,7 @@ void DiskII::decide_clocking_preference() {
// none, given that drives are not running, the shift register has already emptied or stopped and there's no flux about to be received.
if(!(inputs_ & ~input_flux)) {
const bool is_stuck_at_nop =
!flux_duration_ && state_machine_[(state_ & 0xf0) | inputs_ | ((shift_register_&0x80) >> 6)] == state_ && (state_ &0xf) == 0x8;
!flux_duration_ && state_machine_[(state_ & 0xf0) | inputs_ | ((shift_register_&0x80) >> 6)] == state_ && (state_ &0xf) == 0x8;
clocking_preference_ =
(drive_is_sleeping_[0] && drive_is_sleeping_[1] && (!shift_register_ || is_stuck_at_nop) && (inputs_&input_flux))

4
Components/DiskII/DiskIIDrive.hpp
View File

@ -11,8 +11,7 @@
#include "IWM.hpp"
namespace Apple {
namespace Disk {
namespace Apple::Disk {
class DiskIIDrive: public IWMDrive {
public:
@ -27,7 +26,6 @@ class DiskIIDrive: public IWMDrive {
int stepper_position_ = 0;
};
}
}
#endif /* DiskIIDrive_hpp */

4
Components/DiskII/IWM.cpp
View File

@ -17,7 +17,7 @@
using namespace Apple;
namespace {
namespace {
constexpr int CA0 = 1 << 0;
constexpr int CA1 = 1 << 1;
constexpr int CA2 = 1 << 2;
@ -220,7 +220,7 @@ void IWM::set_select(bool enabled) {
}
void IWM::push_drive_state() {
if(drives_[active_drive_]) {
if(drives_[active_drive_]) {
const uint8_t drive_control_lines =
((state_ & CA0) ? IWMDrive::CA0 : 0) |
((state_ & CA1) ? IWMDrive::CA1 : 0) |

4
Components/DiskII/MacintoshDoubleDensityDrive.hpp
View File

@ -11,8 +11,7 @@
#include "IWM.hpp"
namespace Apple {
namespace Macintosh {
namespace Apple::Macintosh {
class DoubleDensityDrive: public IWMDrive {
public:
@ -47,7 +46,6 @@ class DoubleDensityDrive: public IWMDrive {
int step_direction_ = 1;
};
}
}
#endif /* MacintoshDoubleDensityDrive_hpp */

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