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87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
//
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// KonamiWithSCC.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 04/01/2018.
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// Copyright 2018 Thomas Harte. All rights reserved.
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//
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#pragma once
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#include "../MemorySlotHandler.hpp"
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#include "../../../Components/KonamiSCC/KonamiSCC.hpp"
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namespace MSX::Cartridge {
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class KonamiWithSCCROMSlotHandler: public MemorySlotHandler {
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public:
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KonamiWithSCCROMSlotHandler(MSX::MemorySlot &slot, Konami::SCC &scc) :
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slot_(slot), scc_(scc) {}
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void write(uint16_t address, uint8_t value, bool pc_is_outside_bios) final {
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switch(address >> 11) {
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default:
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if(pc_is_outside_bios) confidence_counter_.add_miss();
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break;
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case 0x0a:
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if(pc_is_outside_bios) {
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if(address == 0x5000) confidence_counter_.add_hit(); else confidence_counter_.add_equivocal();
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}
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slot_.map(value * 0x2000, 0x4000, 0x2000);
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break;
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case 0x0e:
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if(pc_is_outside_bios) {
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if(address == 0x7000) confidence_counter_.add_hit(); else confidence_counter_.add_equivocal();
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}
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slot_.map(value * 0x2000, 0x6000, 0x2000);
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break;
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case 0x12:
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if(pc_is_outside_bios) {
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if(address == 0x9000) confidence_counter_.add_hit(); else confidence_counter_.add_equivocal();
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}
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if((value&0x3f) == 0x3f) {
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scc_is_visible_ = true;
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slot_.map_handler(0x8000, 0x2000);
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} else {
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scc_is_visible_ = false;
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slot_.map(value * 0x2000, 0x8000, 0x2000);
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}
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break;
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case 0x13:
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if(scc_is_visible_) {
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if(pc_is_outside_bios) confidence_counter_.add_hit();
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scc_.write(address, value);
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} else {
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if(pc_is_outside_bios) confidence_counter_.add_miss();
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}
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break;
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case 0x16:
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if(pc_is_outside_bios) {
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if(address == 0xb000) confidence_counter_.add_hit(); else confidence_counter_.add_equivocal();
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}
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slot_.map(value * 0x2000, 0xa000, 0x2000);
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break;
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}
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}
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uint8_t read(uint16_t address) final {
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if(scc_is_visible_ && address >= 0x9800 && address < 0xa000) {
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confidence_counter_.add_hit();
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return scc_.read(address);
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}
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confidence_counter_.add_miss();
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return 0xff;
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}
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virtual std::string debug_type() final {
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return "KSCC";
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}
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private:
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MSX::MemorySlot &slot_;
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Konami::SCC &scc_;
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bool scc_is_visible_ = false;
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};
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}
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