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Retain command-engine context.

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This commit is contained in:
Thomas Harte 2023-01-26 11:59:27 -05:00
parent 700470915a
commit 0c8815d6a0
5 changed files with 157 additions and 46 deletions
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52
Components/9918/Implementation/9918.cpp
View File

@ -806,41 +806,77 @@ void Base<personality>::commit_register(int reg, uint8_t value) {
break;
case 32:
Storage<personality>::command_context_.source_x =
(Storage<personality>::command_context_.source_x & ~0xff) |
value;
break;
case 33:
LOG("TODO: Yamaha command source x; " << PADHEX(2) << +value);
Storage<personality>::command_context_.source_x =
(Storage<personality>::command_context_.source_x & ~0x100) |
((value & 1) << 8);
break;
case 34:
Storage<personality>::command_context_.source_y =
(Storage<personality>::command_context_.source_y & ~0xff) |
value;
break;
case 35:
LOG("TODO: Yamaha command source y; " << PADHEX(2) << +value);
Storage<personality>::command_context_.source_y =
(Storage<personality>::command_context_.source_y & ~0x300) |
((value & 3) << 8);
break;
case 36:
Storage<personality>::command_context_.destination_x =
(Storage<personality>::command_context_.destination_x & ~0xff) |
value;
break;
case 37:
LOG("TODO: Yamaha command destination x; " << PADHEX(2) << +value);
Storage<personality>::command_context_.destination_x =
(Storage<personality>::command_context_.destination_x & ~0x100) |
((value & 1) << 8);
break;
case 38:
Storage<personality>::command_context_.destination_y =
(Storage<personality>::command_context_.destination_y & ~0xff) |
value;
break;
case 39:
LOG("TODO: Yamaha command destination y; " << PADHEX(2) << +value);
Storage<personality>::command_context_.destination_y =
(Storage<personality>::command_context_.destination_y & ~0x300) |
((value & 3) << 8);
break;
case 40:
Storage<personality>::command_context_.size_x =
(Storage<personality>::command_context_.size_x & ~0xff) |
value;
break;
case 41:
LOG("TODO: Yamaha command size x; " << PADHEX(2) << +value);
Storage<personality>::command_context_.size_x =
(Storage<personality>::command_context_.size_x & ~0x100) |
((value & 1) << 8);
break;
case 42:
Storage<personality>::command_context_.size_y =
(Storage<personality>::command_context_.size_y & ~0xff) |
value;
break;
case 43:
LOG("TODO: Yamaha command size y; " << PADHEX(2) << +value);
Storage<personality>::command_context_.size_y =
(Storage<personality>::command_context_.size_y & ~0x300) |
((value & 3) << 8);
break;
case 44:
LOG("TODO: Yamaha command colour; " << PADHEX(2) << +value);
Storage<personality>::command_context_.colour = value;
break;
case 45:
LOG("TODO: Yamaha VRAM bank selection addressing and command arguments; " << PADHEX(2) << +value);
Storage<personality>::command_context_.arguments = value;
// b6: 0 = video RAM; 1 = expansion RAM.
// b5: MXD (???)
// b4: MXS

44
Components/9918/Implementation/9918Base.hpp
View File

@ -15,7 +15,9 @@
#include "../../../Numeric/BitReverse.hpp"
#include "../../../Outputs/CRT/CRT.hpp"
#include "AccessEnums.hpp"
#include "PersonalityTraits.hpp"
#include "YamahaCommands.hpp"
#include <array>
#include <cassert>
@ -27,44 +29,6 @@
namespace TI {
namespace 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,
};
enum class LineMode {
Text,
Character,
Refresh,
SMS,
Yamaha,
};
enum class MemoryAccess {
Read, Write, None
};
// Temporary buffers collect a representation of each line prior to pixel serialisation.
//
// TODO: either template on personality, to avoid having to be the union of all potential footprints,
@ -217,6 +181,10 @@ template <Personality personality> struct Storage<personality, std::enable_if_t<
next_event_ = no_sprites_events;
}
// Command engine state.
CommandContext command_context_;
Command *command_ = nullptr;
Storage() noexcept {
// Perform sanity checks on the event lists.
#ifndef NDEBUG

57
Components/9918/Implementation/AccessEnums.hpp Normal file
View File

@ -0,0 +1,57 @@
//
// 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 {
namespace 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,
};
enum class LineMode {
Text,
Character,
Refresh,
SMS,
Yamaha,
};
enum class MemoryAccess {
Read, Write, None
};
}
}
#endif /* AccessEnums_hpp */

46
Components/9918/Implementation/YamahaCommands.hpp Normal file
View File

@ -0,0 +1,46 @@
//
// 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 {
namespace TMS {
struct CommandContext {
int source_x = 0, source_y = 0;
int destination_x = 0, destination_y = 0;
int size_x = 0, size_y = 0;
uint8_t colour = 0;
uint8_t arguments = 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.
MemoryAccess access = MemoryAccess::None;
int cycles = 0;
uint8_t value = 0;
/// Current command parameters.
CommandContext &context;
Command(CommandContext &context) : context(context) {}
/// Request that the fields above are updated given the completed access.
virtual bool next() = 0;
};
}
}
#endif /* YamahaCommands_hpp */

4
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
View File

@ -2216,6 +2216,8 @@
4BF0BC67297108D100CCA2B5 /* MemorySlotHandler.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = MemorySlotHandler.cpp; sourceTree = "<group>"; };
4BF0BC6F2973318E00CCA2B5 /* RP5C01.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = RP5C01.cpp; sourceTree = "<group>"; };
4BF0BC702973318E00CCA2B5 /* RP5C01.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = RP5C01.hpp; sourceTree = "<group>"; };
4BF0BC732982E54700CCA2B5 /* YamahaCommands.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = YamahaCommands.hpp; sourceTree = "<group>"; };
4BF0BC742982E6D300CCA2B5 /* AccessEnums.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = AccessEnums.hpp; sourceTree = "<group>"; };
4BF40A5525424C770033EA39 /* LanguageCardSwitches.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = LanguageCardSwitches.hpp; sourceTree = "<group>"; };
4BF40A5A254263140033EA39 /* AuxiliaryMemorySwitches.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = AuxiliaryMemorySwitches.hpp; sourceTree = "<group>"; };
4BF437EC209D0F7E008CBD6B /* SegmentParser.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = SegmentParser.cpp; sourceTree = "<group>"; };
@ -4751,10 +4753,12 @@
children = (
4B43983829620FB1006B0BFC /* 9918.cpp */,
4BD388411FE34E010042B588 /* 9918Base.hpp */,
4BF0BC742982E6D300CCA2B5 /* AccessEnums.hpp */,
4B43983C29621024006B0BFC /* ClockConverter.hpp */,
4B43983F2967459B006B0BFC /* Draw.hpp */,
4B43983E29628538006B0BFC /* Fetch.hpp */,
4B262BFF29691F55002EC0F7 /* PersonalityTraits.hpp */,
4BF0BC732982E54700CCA2B5 /* YamahaCommands.hpp */,
);
path = Implementation;
sourceTree = "<group>";