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CLK/Machines/Oric/Oric.cpp
Thomas Harte 7248470950 Roll formatting and const tweaks into Inputs.
2024-11-30 18:57:56 -05:00

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//
// Oric.cpp
// Clock Signal
//
// Created by Thomas Harte on 11/10/2016.
// Copyright 2016 Thomas Harte. All rights reserved.
//
#include "Oric.hpp"
#include "BD500.hpp"
#include "Jasmin.hpp"
#include "Keyboard.hpp"
#include "Microdisc.hpp"
#include "Video.hpp"
#include "../../Activity/Source.hpp"
#include "../MachineTypes.hpp"
#include "../Utility/MemoryFuzzer.hpp"
#include "../Utility/StringSerialiser.hpp"
#include "../../Processors/6502Esque/6502Selector.hpp"
#include "../../Components/6522/6522.hpp"
#include "../../Components/AY38910/AY38910.hpp"
#include "../../Components/DiskII/DiskII.hpp"
#include "../../Storage/Tape/Tape.hpp"
#include "../../Storage/Tape/Parsers/Oric.hpp"
#include "../../ClockReceiver/ForceInline.hpp"
#include "../../Configurable/StandardOptions.hpp"
#include "../../Outputs/Speaker/Implementation/LowpassSpeaker.hpp"
#include "../../Analyser/Static/Oric/Target.hpp"
#include "../../ClockReceiver/JustInTime.hpp"
#include <array>
#include <cstdint>
#include <memory>
#include <vector>
namespace {
/*!
Provides an Altai-style joystick.
*/
class Joystick: public Inputs::ConcreteJoystick {
public:
Joystick() :
ConcreteJoystick({
Input(Input::Up),
Input(Input::Down),
Input(Input::Left),
Input(Input::Right),
Input(Input::Fire)
}) {}
void did_set_input(const Input &digital_input, bool is_active) final {
const auto apply = [&](uint8_t bit) {
if(is_active) state_ &= ~bit; else state_ |= bit;
};
switch(digital_input.type) {
default: return;
case Input::Right: apply(0x02); break;
case Input::Left: apply(0x01); break;
case Input::Down: apply(0x08); break;
case Input::Up: apply(0x10); break;
case Input::Fire: apply(0x20); break;
}
}
uint8_t get_state() {
return state_;
}
private:
uint8_t state_ = 0xff;
};
}
namespace Oric {
using DiskInterface = Analyser::Static::Oric::Target::DiskInterface;
using Processor = Analyser::Static::Oric::Target::Processor;
using AY = GI::AY38910::AY38910<false>;
using Speaker = Outputs::Speaker::PullLowpass<AY>;
enum ROM {
BASIC10 = 0, BASIC11, Microdisc, Colour
};
/*!
Models the Oric's keyboard: eight key rows, containing a bitfield of keys set.
Active line is selected through a port on the Oric's VIA, and a column mask is
selected via a port on the AY, returning a single Boolean representation of the
logical OR of every key selected by the column mask on the active row.
*/
class Keyboard {
public:
struct SpecialKeyHandler {
virtual void perform_special_key(Oric::Key key) = 0;
};
Keyboard(SpecialKeyHandler *handler) : special_key_handler_(handler) {
clear_all_keys();
}
/// Sets whether @c key is or is not pressed, per @c is_pressed.
void set_key_state(uint16_t key, bool is_pressed) {
switch(key) {
default: {
const uint8_t mask = key & 0xff;
const int line = key >> 8;
if(is_pressed) rows_[line] |= mask;
else rows_[line] &= ~mask;
} break;
case KeyNMI:
case KeyJasminReset:
if(is_pressed) {
special_key_handler_->perform_special_key(Oric::Key(key));
}
break;
}
}
/// Sets all keys as unpressed.
void clear_all_keys() {
memset(rows_, 0, sizeof(rows_));
}
/// Selects the active row.
void set_active_row(uint8_t row) {
row_ = row & 7;
}
/// Queries the keys on the active row specified by @c mask.
bool query_column(uint8_t column_mask) {
return !!(rows_[row_] & column_mask);
}
private:
uint8_t row_ = 0;
uint8_t rows_[8];
SpecialKeyHandler *const special_key_handler_;
};
/*!
Provide's the Oric's tape player: a standard binary-sampled tape which also holds
an instance of the Oric tape parser, to provide fast-tape loading.
*/
class TapePlayer: public Storage::Tape::BinaryTapePlayer {
public:
TapePlayer() : Storage::Tape::BinaryTapePlayer(1000000) {}
/*!
Parses the incoming tape event stream to obtain the next stored byte.
@param use_fast_encoding If set to @c true , inspects the tape as though it
is encoded in the Oric's fast-loading scheme. Otherwise looks for a slow-encoded byte.
@returns The next byte from the tape.
*/
uint8_t get_next_byte(bool use_fast_encoding) {
return uint8_t(parser_.get_next_byte(get_tape(), use_fast_encoding));
}
private:
Storage::Tape::Oric::Parser parser_;
};
/*!
Implements the Oric's VIA's port handler. On the Oric the VIA's ports connect
to the AY, the tape's motor control signal and the keyboard.
*/
class VIAPortHandler: public MOS::MOS6522::IRQDelegatePortHandler {
public:
VIAPortHandler(Concurrency::AsyncTaskQueue<false> &audio_queue, AY &ay8910, Speaker &speaker, TapePlayer &tape_player, Keyboard &keyboard) :
audio_queue_(audio_queue), ay8910_(ay8910), speaker_(speaker), tape_player_(tape_player), keyboard_(keyboard)
{
// Attach a couple of joysticks.
joysticks_.emplace_back(new Joystick);
joysticks_.emplace_back(new Joystick);
}
/*!
Reponds to the 6522's control line output change signal; on an Oric A2 is connected to
the AY's BDIR, and B2 is connected to the AY's A2.
*/
void set_control_line_output(MOS::MOS6522::Port port, MOS::MOS6522::Line line, bool value) {
if(line) {
if(port) ay_bdir_ = value; else ay_bc1_ = value;
update_ay();
ay8910_.set_control_lines( (GI::AY38910::ControlLines)((ay_bdir_ ? GI::AY38910::BDIR : 0) | (ay_bc1_ ? GI::AY38910::BC1 : 0) | GI::AY38910::BC2));
}
}
/*!
Reponds to changes in the 6522's port output. On an Oric port B sets the tape motor control
and the keyboard's active row. Port A is connected to the AY's data bus.
*/
void set_port_output(MOS::MOS6522::Port port, uint8_t value, uint8_t) {
if(port) {
keyboard_.set_active_row(value);
tape_player_.set_motor_control(value & 0x40);
} else {
update_ay();
ay8910_.set_data_input(value);
porta_output_ = value;
}
}
/*!
Provides input data for the 6522. Port B reads the keyboard, and port A reads from the AY.
*/
uint8_t get_port_input(MOS::MOS6522::Port port) {
if(port) {
uint8_t column = ay8910_.get_port_output(false) ^ 0xff;
return keyboard_.query_column(column) ? 0x08 : 0x00;
} else {
uint8_t result = ay8910_.get_data_output();
if(porta_output_ & 0x40) result &= static_cast<Joystick *>(joysticks_[0].get())->get_state();
if(porta_output_ & 0x80) result &= static_cast<Joystick *>(joysticks_[1].get())->get_state();
return result;
}
}
/*!
Advances time. This class manages the AY's concept of time to permit updating-on-demand.
*/
inline void run_for(const HalfCycles cycles) {
cycles_since_ay_update_ += cycles;
}
/// Flushes any queued behaviour (which, specifically, means on the AY).
void flush() {
update_ay();
audio_queue_.perform();
}
const std::vector<std::unique_ptr<Inputs::Joystick>> &get_joysticks() {
return joysticks_;
}
private:
void update_ay() {
speaker_.run_for(audio_queue_, cycles_since_ay_update_.flush<Cycles>());
}
bool ay_bdir_ = false;
bool ay_bc1_ = false;
uint8_t porta_output_ = 0xff;
HalfCycles cycles_since_ay_update_;
Concurrency::AsyncTaskQueue<false> &audio_queue_;
AY &ay8910_;
Speaker &speaker_;
TapePlayer &tape_player_;
Keyboard &keyboard_;
std::vector<std::unique_ptr<Inputs::Joystick>> joysticks_;
};
template <Analyser::Static::Oric::Target::DiskInterface disk_interface, CPU::MOS6502Esque::Type processor_type> class ConcreteMachine:
public MachineTypes::TimedMachine,
public MachineTypes::ScanProducer,
public MachineTypes::AudioProducer,
public MachineTypes::JoystickMachine,
public MachineTypes::MediaTarget,
public MachineTypes::MappedKeyboardMachine,
public Configurable::Device,
public CPU::MOS6502::BusHandler,
public MOS::MOS6522::IRQDelegatePortHandler::Delegate,
public Storage::Tape::BinaryTapePlayer::Delegate,
public DiskController::Delegate,
public Activity::Source,
public Machine,
public Keyboard::SpecialKeyHandler {
public:
ConcreteMachine(const Analyser::Static::Oric::Target &target, const ROMMachine::ROMFetcher &rom_fetcher) :
m6502_(*this),
video_(ram_.data()),
ay8910_(GI::AY38910::Personality::AY38910, audio_queue_),
speaker_(ay8910_),
via_port_handler_(audio_queue_, ay8910_, speaker_, tape_player_, keyboard_),
via_(via_port_handler_),
keyboard_(this),
diskii_(2000000) {
set_clock_rate(1000000);
speaker_.set_input_rate(1000000.0f);
via_port_handler_.set_interrupt_delegate(this);
tape_player_.set_delegate(this);
// Slight hack here: I'm unclear what RAM should look like at startup.
// Actually, I think completely random might be right since the Microdisc
// sort of assumes it, but also the BD-500 never explicitly sets PAL mode
// so I can't have any switch-to-NTSC bytes in the display area. Hence:
// disallow all atributes.
Memory::Fuzz(ram_);
for(auto &c: ram_) {
c |= 0x40;
}
::ROM::Request request = ::ROM::Request(::ROM::Name::OricColourROM, true);
::ROM::Name basic;
switch(target.rom) {
case Analyser::Static::Oric::Target::ROM::BASIC10: basic = ::ROM::Name::OricBASIC10; break;
default:
case Analyser::Static::Oric::Target::ROM::BASIC11: basic = ::ROM::Name::OricBASIC11; break;
case Analyser::Static::Oric::Target::ROM::Pravetz: basic = ::ROM::Name::OricPravetzBASIC; break;
}
request = request && ::ROM::Request(basic);
switch(disk_interface) {
default: break;
case DiskInterface::BD500:
request = request && ::ROM::Request(::ROM::Name::OricByteDrive500);
break;
case DiskInterface::Jasmin:
request = request && ::ROM::Request(::ROM::Name::OricJasmin);
break;
case DiskInterface::Microdisc:
request = request && ::ROM::Request(::ROM::Name::OricMicrodisc);
break;
case DiskInterface::Pravetz:
request = request && ::ROM::Request(::ROM::Name::Oric8DOSBoot) && ::ROM::Request(::ROM::Name::DiskIIStateMachine16Sector);
break;
}
auto roms = rom_fetcher(request);
if(!request.validate(roms)) {
throw ROMMachine::Error::MissingROMs;
}
// The colour ROM is optional; an alternative composite encoding can be used if
// it is absent.
const auto colour_rom = roms.find(::ROM::Name::OricColourROM);
if(colour_rom != roms.end()) {
video_->set_colour_rom(colour_rom->second);
}
rom_ = std::move(roms.find(basic)->second);
switch(disk_interface) {
default: break;
case DiskInterface::BD500:
disk_rom_ = std::move(roms.find(::ROM::Name::OricByteDrive500)->second);
break;
case DiskInterface::Jasmin:
disk_rom_ = std::move(roms.find(::ROM::Name::OricJasmin)->second);
break;
case DiskInterface::Microdisc:
disk_rom_ = std::move(roms.find(::ROM::Name::OricMicrodisc)->second);
break;
case DiskInterface::Pravetz: {
pravetz_rom_ = std::move(roms.find(::ROM::Name::Oric8DOSBoot)->second);
pravetz_rom_.resize(512);
diskii_->set_state_machine(roms.find(::ROM::Name::DiskIIStateMachine16Sector)->second);
} break;
}
paged_rom_ = rom_.data();
switch(target.disk_interface) {
default: break;
case DiskInterface::BD500:
bd500_.set_delegate(this);
break;
case DiskInterface::Jasmin:
jasmin_.set_delegate(this);
break;
case DiskInterface::Microdisc:
microdisc_.set_delegate(this);
break;
}
if(!target.loading_command.empty()) {
type_string(target.loading_command);
}
if(target.should_start_jasmin) {
// If Jasmin autostart is requested then plan to do so in 3 seconds; empirically long enough
// for the Oric to boot normally, before the Jasmin intercedes.
jasmin_reset_counter_ = 3000000;
}
switch(target.rom) {
case Analyser::Static::Oric::Target::ROM::BASIC10:
tape_get_byte_address_ = 0xe630;
tape_speed_address_ = 0x67;
break;
case Analyser::Static::Oric::Target::ROM::BASIC11:
case Analyser::Static::Oric::Target::ROM::Pravetz:
tape_get_byte_address_ = 0xe6c9;
tape_speed_address_ = 0x024d;
break;
}
insert_media(target.media);
}
~ConcreteMachine() {
audio_queue_.flush();
}
void set_key_state(uint16_t key, bool is_pressed) final {
if(key == KeyNMI) {
m6502_.set_nmi_line(is_pressed);
} else {
keyboard_.set_key_state(key, is_pressed);
}
}
void clear_all_keys() final {
keyboard_.clear_all_keys();
}
void set_use_fast_tape_hack(bool activate) {
use_fast_tape_hack_ = activate;
}
template <typename DiskInterface> bool insert_disks(const Analyser::Static::Media &media, DiskInterface &interface, int num_drives) {
int drive_index = 0;
for(auto &disk : media.disks) {
interface.set_disk(disk, drive_index);
++drive_index;
if(drive_index == num_drives) break;
}
return true;
}
bool insert_media(const Analyser::Static::Media &media) final {
bool inserted = false;
if(!media.tapes.empty()) {
tape_player_.set_tape(media.tapes.front());
inserted = true;
}
if(!media.disks.empty()) {
switch(disk_interface) {
case DiskInterface::BD500: inserted |= insert_disks(media, bd500_, 4); break;
case DiskInterface::Jasmin: inserted |= insert_disks(media, jasmin_, 4); break;
case DiskInterface::Microdisc: inserted |= insert_disks(media, microdisc_, 4); break;
case DiskInterface::Pravetz: inserted |= insert_disks(media, *diskii_.last_valid(), 2); break;
default: break;
}
}
return inserted;
}
// to satisfy CPU::MOS6502::BusHandler
forceinline Cycles perform_bus_operation(CPU::MOS6502::BusOperation operation, uint16_t address, uint8_t *value) {
if(address > ram_top_) {
if(!isWriteOperation(operation)) *value = paged_rom_[address - ram_top_ - 1];
// 024D = 0 => fast; otherwise slow
// E6C9 = read byte: return byte in A
if( address == tape_get_byte_address_ &&
paged_rom_ == rom_.data() &&
use_fast_tape_hack_ &&
operation == CPU::MOS6502::BusOperation::ReadOpcode &&
tape_player_.has_tape() &&
!tape_player_.get_tape()->is_at_end()) {
uint8_t next_byte = tape_player_.get_next_byte(!ram_[tape_speed_address_]);
m6502_.set_value_of(CPU::MOS6502Esque::A, next_byte);
m6502_.set_value_of(CPU::MOS6502Esque::Flags, next_byte ? 0 : CPU::MOS6502::Flag::Zero);
*value = 0x60; // i.e. RTS
}
} else {
if((address & 0xff00) == 0x0300) {
if(address < 0x0310 || (disk_interface == DiskInterface::None)) {
if(!isWriteOperation(operation)) *value = via_.read(address);
else via_.write(address, *value);
} else {
switch(disk_interface) {
default: break;
case DiskInterface::BD500:
if(!isWriteOperation(operation)) *value = bd500_.read(address);
else bd500_.write(address, *value);
break;
case DiskInterface::Jasmin:
if(address >= 0x3f4) {
if(!isWriteOperation(operation)) *value = jasmin_.read(address);
else jasmin_.write(address, *value);
}
break;
case DiskInterface::Microdisc:
switch(address) {
case 0x0310: case 0x0311: case 0x0312: case 0x0313:
if(!isWriteOperation(operation)) *value = microdisc_.read(address);
else microdisc_.write(address, *value);
break;
case 0x314: case 0x315: case 0x316: case 0x317:
if(!isWriteOperation(operation)) *value = microdisc_.get_interrupt_request_register();
else microdisc_.set_control_register(*value);
break;
case 0x318: case 0x319: case 0x31a: case 0x31b:
if(!isWriteOperation(operation)) *value = microdisc_.get_data_request_register();
break;
}
break;
case DiskInterface::Pravetz:
if(address >= 0x0320) {
if(!isWriteOperation(operation)) *value = pravetz_rom_[pravetz_rom_base_pointer_ + (address & 0xff)];
else {
switch(address) {
case 0x380: case 0x381: case 0x382: case 0x383:
ram_top_ = (address&1) ? basic_invisible_ram_top_ : basic_visible_ram_top_;
pravetz_rom_base_pointer_ = (address&2) ? 0x100 : 0x000;
break;
}
}
} else {
const int disk_value = diskii_->read_address(address);
if(!isWriteOperation(operation) && disk_value != Apple::DiskII::DidNotLoad) *value = uint8_t(disk_value);
}
break;
}
}
} else {
if(!isWriteOperation(operation))
*value = ram_[address];
else {
if(address >= 0x9800 && address <= 0xc000) video_.flush();
ram_[address] = *value;
}
}
}
// $02df is where the Oric ROMs; all of them, including BASIC 1.0, 1.1 and the Pravetz; have the
// IRQ routine store an incoming keystroke in order for reading to occur later. By capturing the
// read rather than the decode and write: (i) nothing is lost while BASIC is parsing; and
// (ii) keyboard input is much more rapid.
if(string_serialiser_ && address == 0x02df && operation == CPU::MOS6502::BusOperation::Read) {
*value = string_serialiser_->head() | 0x80;
if(!string_serialiser_->advance()) string_serialiser_.reset();
}
via_.run_for(Cycles(1));
tape_player_.run_for(Cycles(1));
switch(disk_interface) {
default: break;
case DiskInterface::BD500:
bd500_.run_for(Cycles(9)); // i.e. effective clock rate of 9Mhz.
break;
case DiskInterface::Jasmin:
jasmin_.run_for(Cycles(8)); // i.e. effective clock rate of 8Mhz.
// Jasmin autostart hack: wait for a period, then trigger a reset, having forced
// the Jasmin to page its ROM in first. I assume the latter being what the Jasmin's
// hardware boot button did.
if(jasmin_reset_counter_) {
--jasmin_reset_counter_;
if(!jasmin_reset_counter_) {
perform_special_key(KeyJasminReset);
}
}
break;
case DiskInterface::Microdisc:
microdisc_.run_for(Cycles(8)); // i.e. effective clock rate of 8Mhz.
break;
case DiskInterface::Pravetz:
if(diskii_.clocking_preference() == ClockingHint::Preference::RealTime) {
diskii_->set_data_input(*value);
}
diskii_ += Cycles(2); // i.e. effective clock rate of 2Mhz.
break;
}
if(video_ += Cycles(1)) {
set_via_port_b_input();
}
return Cycles(1);
}
void flush_output(int outputs) final {
if(outputs & Output::Video) {
video_.flush();
}
if(outputs & Output::Audio) {
via_.flush();
}
diskii_.flush();
}
// to satisfy CRTMachine::Machine
void set_scan_target(Outputs::Display::ScanTarget *scan_target) final {
video_.last_valid()->set_scan_target(scan_target);
}
Outputs::Display::ScanStatus get_scaled_scan_status() const final {
return video_.last_valid()->get_scaled_scan_status();
}
void set_display_type(Outputs::Display::DisplayType display_type) final {
video_.last_valid()->set_display_type(display_type);
}
Outputs::Display::DisplayType get_display_type() const final {
return video_.last_valid()->get_display_type();
}
Outputs::Speaker::Speaker *get_speaker() final {
return &speaker_;
}
void run_for(const Cycles cycles) final {
m6502_.run_for(cycles);
}
// to satisfy MOS::MOS6522IRQDelegate::Delegate
void mos6522_did_change_interrupt_status(void *) final {
set_interrupt_line();
}
// to satisfy Storage::Tape::BinaryTapePlayer::Delegate
void tape_did_change_input(Storage::Tape::BinaryTapePlayer *) final {
set_via_port_b_input();
}
void set_via_port_b_input() {
// set CB1
via_.set_control_line_input(
MOS::MOS6522::Port::B, MOS::MOS6522::Line::One,
tape_player_.get_motor_control() ?
!tape_player_.get_input() :
!video_->vsync()
);
}
// for Utility::TypeRecipient::Delegate
void type_string(const std::string &string) final {
string_serialiser_ = std::make_unique<Utility::StringSerialiser>(string, true);
}
bool can_type(char c) const final {
// Make an effort to type the entire printable ASCII range.
return c >= 32 && c < 127;
}
// DiskController::Delegate
void disk_controller_did_change_paged_item(DiskController *controller) final {
switch(controller->get_paged_item()) {
default:
ram_top_ = basic_visible_ram_top_;
paged_rom_ = rom_.data();
break;
case DiskController::PagedItem::RAM:
ram_top_ = basic_invisible_ram_top_;
break;
case DiskController::PagedItem::DiskROM:
ram_top_ = uint16_t(0xffff - disk_rom_.size());
paged_rom_ = disk_rom_.data();
break;
}
}
// WD::WD1770::Delegate
void wd1770_did_change_output(WD::WD1770 *) final {
set_interrupt_line();
}
KeyboardMapper *get_keyboard_mapper() final {
return &keyboard_mapper_;
}
// MARK: - Configuration options.
std::unique_ptr<Reflection::Struct> get_options() const final {
auto options = std::make_unique<Options>(Configurable::OptionsType::UserFriendly);
options->output = get_video_signal_configurable();
options->quickload = use_fast_tape_hack_;
return options;
}
void set_options(const std::unique_ptr<Reflection::Struct> &str) final {
const auto options = dynamic_cast<Options *>(str.get());
set_video_signal_configurable(options->output);
set_use_fast_tape_hack(options->quickload);
}
void set_activity_observer(Activity::Observer *observer) final {
switch(disk_interface) {
default: break;
case DiskInterface::BD500:
bd500_.set_activity_observer(observer);
break;
case DiskInterface::Jasmin:
jasmin_.set_activity_observer(observer);
break;
case DiskInterface::Microdisc:
microdisc_.set_activity_observer(observer);
break;
case DiskInterface::Pravetz:
diskii_->set_activity_observer(observer);
break;
}
}
private:
const uint16_t basic_invisible_ram_top_ = 0xffff;
const uint16_t basic_visible_ram_top_ = 0xbfff;
CPU::MOS6502Esque::Processor<processor_type, ConcreteMachine, false> m6502_;
// RAM and ROM
std::vector<uint8_t> rom_, disk_rom_;
std::array<uint8_t, 65536> ram_{};
// ROM bookkeeping
uint16_t tape_get_byte_address_ = 0, tape_speed_address_ = 0;
int keyboard_read_count_ = 0;
// Outputs
JustInTimeActor<VideoOutput, Cycles> video_;
Concurrency::AsyncTaskQueue<false> audio_queue_;
GI::AY38910::AY38910<false> ay8910_;
Speaker speaker_;
// Inputs
Oric::KeyboardMapper keyboard_mapper_;
// The tape
TapePlayer tape_player_;
bool use_fast_tape_hack_ = false;
VIAPortHandler via_port_handler_;
MOS::MOS6522::MOS6522<VIAPortHandler> via_;
Keyboard keyboard_;
// the Microdisc, if in use.
class Microdisc microdisc_;
// the Jasmin, if in use.
Jasmin jasmin_;
int jasmin_reset_counter_ = 0;
// the BD-500, if in use.
BD500 bd500_;
// the Pravetz/Disk II, if in use.
JustInTimeActor<Apple::DiskII, Cycles> diskii_;
std::vector<uint8_t> pravetz_rom_;
std::size_t pravetz_rom_base_pointer_ = 0;
// Overlay RAM
uint16_t ram_top_ = basic_visible_ram_top_;
uint8_t *paged_rom_ = nullptr;
// Helper to discern current IRQ state
inline void set_interrupt_line() {
bool irq_line = via_.get_interrupt_line();
// The Microdisc directly provides an interrupt line.
if constexpr (disk_interface == DiskInterface::Microdisc) {
irq_line |= microdisc_.get_interrupt_request_line();
}
// The Jasmin reroutes its data request line to the processor's interrupt line.
if constexpr (disk_interface == DiskInterface::Jasmin) {
irq_line |= jasmin_.get_data_request_line();
}
m6502_.set_irq_line(irq_line);
}
// Keys that aren't read by polling.
void perform_special_key(Oric::Key key) final {
switch(key) {
default: break;
case KeyJasminReset:
jasmin_.write(0x3fa, 0);
jasmin_.write(0x3fb, 1);
m6502_.set_power_on(true);
break;
case KeyNMI:
// As luck would have it, the 6502's NMI line is edge triggered.
// So just forcing through an edge will work here.
m6502_.set_nmi_line(true);
m6502_.set_nmi_line(false);
break;
}
}
// MARK: - typing
std::unique_ptr<Utility::StringSerialiser> string_serialiser_;
// MARK: - Joysticks
const std::vector<std::unique_ptr<Inputs::Joystick>> &get_joysticks() override {
return via_port_handler_.get_joysticks();
}
};
}
using namespace Oric;
namespace {
template <CPU::MOS6502Esque::Type processor> std::unique_ptr<Machine> machine(const Analyser::Static::Oric::Target &target, const ROMMachine::ROMFetcher &rom_fetcher) {
switch(target.disk_interface) {
default: return std::make_unique<ConcreteMachine<DiskInterface::None, processor>>(target, rom_fetcher);
case DiskInterface::Microdisc: return std::make_unique<ConcreteMachine<DiskInterface::Microdisc, processor>>(target, rom_fetcher);
case DiskInterface::Pravetz: return std::make_unique<ConcreteMachine<DiskInterface::Pravetz, processor>>(target, rom_fetcher);
case DiskInterface::Jasmin: return std::make_unique<ConcreteMachine<DiskInterface::Jasmin, processor>>(target, rom_fetcher);
case DiskInterface::BD500: return std::make_unique<ConcreteMachine<DiskInterface::BD500, processor>>(target, rom_fetcher);
}
}
}
std::unique_ptr<Machine> Machine::Oric(const Analyser::Static::Target *target_hint, const ROMMachine::ROMFetcher &rom_fetcher) {
auto *const oric_target = dynamic_cast<const Analyser::Static::Oric::Target *>(target_hint);
switch(oric_target->processor) {
case Processor::WDC65816: return machine<CPU::MOS6502Esque::Type::TWDC65816>(*oric_target, rom_fetcher);
case Processor::MOS6502: return machine<CPU::MOS6502Esque::Type::T6502>(*oric_target, rom_fetcher);
}
return nullptr;
}
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