2019-10-04 00:17:26 +00:00
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//
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// AtariST.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 03/10/2019.
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// Copyright © 2019 Thomas Harte. All rights reserved.
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//
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#include "AtariST.hpp"
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2019-10-04 02:47:57 +00:00
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#include "../CRTMachine.hpp"
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2019-10-05 01:34:15 +00:00
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#include "../../Processors/68000/68000.hpp"
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#include "Video.hpp"
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#include "../../ClockReceiver/JustInTime.hpp"
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namespace Atari {
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namespace ST {
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2019-10-04 02:47:57 +00:00
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const int CLOCK_RATE = 8000000;
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using Target = Analyser::Static::Target;
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class ConcreteMachine:
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public Atari::ST::Machine,
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2019-10-05 01:34:15 +00:00
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public CPU::MC68000::BusHandler,
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2019-10-04 02:47:57 +00:00
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public CRTMachine::Machine {
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public:
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2019-10-05 01:34:15 +00:00
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ConcreteMachine(const Target &target, const ROMMachine::ROMFetcher &rom_fetcher) :
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mc68000_(*this) {
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2019-10-04 02:47:57 +00:00
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set_clock_rate(CLOCK_RATE);
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2019-10-05 01:34:15 +00:00
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ram_.resize(512 * 1024);
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std::vector<ROMMachine::ROM> rom_descriptions = {
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{"AtariST", "the TOS ROM", "tos100.img", 192*1024, 0x1a586c64}
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};
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const auto roms = rom_fetcher(rom_descriptions);
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if(!roms[0]) {
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throw ROMMachine::Error::MissingROMs;
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}
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rom_ = *roms[0];
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2019-10-04 02:47:57 +00:00
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}
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2019-10-05 01:34:15 +00:00
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// MARK: CRTMachine::Machine
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2019-10-04 02:47:57 +00:00
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void set_scan_target(Outputs::Display::ScanTarget *scan_target) final {
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2019-10-05 01:34:15 +00:00
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video_->set_scan_target(scan_target);
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2019-10-04 02:47:57 +00:00
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}
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Outputs::Speaker::Speaker *get_speaker() final {
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return nullptr;
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}
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void run_for(const Cycles cycles) final {
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2019-10-05 01:34:15 +00:00
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mc68000_.run_for(cycles);
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}
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// MARK: MC68000::BusHandler
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HalfCycles perform_bus_operation(const CPU::MC68000::Microcycle &cycle, int is_supervisor) {
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return HalfCycles(0);
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2019-10-04 02:47:57 +00:00
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}
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2019-10-05 01:34:15 +00:00
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private:
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CPU::MC68000::Processor<ConcreteMachine, true> mc68000_;
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JustInTimeActor<Video, HalfCycles> video_;
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std::vector<uint8_t> ram_;
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std::vector<uint8_t> rom_;
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2019-10-04 02:47:57 +00:00
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};
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2019-10-05 01:34:15 +00:00
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}
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2019-10-04 02:47:57 +00:00
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}
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2019-10-04 00:17:26 +00:00
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using namespace Atari::ST;
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Machine *Machine::AtariST(const Analyser::Static::Target *target, const ROMMachine::ROMFetcher &rom_fetcher) {
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2019-10-04 02:47:57 +00:00
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return new ConcreteMachine(*target, rom_fetcher);
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2019-10-04 00:17:26 +00:00
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}
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Machine::~Machine() {}
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