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https://github.com/MoleskiCoder/EightBit.git
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55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
#pragma once
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#include "Configuration.h"
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#include <string>
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#include <Ram.h>
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#include <Rom.h>
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#include <Bus.h>
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#include <mc6809.h>
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#include <Disassembly.h>
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#include <MC6850.h>
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#include <UnusedMemory.h>
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class Board : public EightBit::Bus {
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public:
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Board(const Configuration& configuration);
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auto& CPU() { return m_cpu; }
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auto& ACIA() { return m_acia; }
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virtual void powerOn() final;
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virtual void powerOff() final;
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protected:
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virtual void initialise() final;
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virtual EightBit::MemoryMapping mapping(uint16_t address) final;
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private:
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const Configuration& m_configuration;
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EightBit::Ram m_ram = 0x8000; // 0000 - 7FFF, 32K RAM
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EightBit::UnusedMemory m_unused2000 = { 0x2000, 0xff }; // 8000 - 9FFF, 8K unused
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EightBit::Ram m_io = 0x2000; // A000 - BFFF, 8K serial interface, minimally decoded
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EightBit::Rom m_rom = 0x4000; // C000 - FFFF, 16K ROM
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EightBit::mc6850 m_acia;
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EightBit::mc6809 m_cpu = *this;
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EightBit::Disassembly m_disassembler = { *this, m_cpu };
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uint64_t m_totalCycleCount = 0UL;
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int64_t m_frameCycleCount = 0L;
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// The m_disassembleAt and m_ignoreDisassembly are used to skip pin events
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EightBit::register16_t m_disassembleAt = 0x0000;
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bool m_ignoreDisassembly = false;
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// Use the bus data to update the ACIA access/address pins
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void updateAciaPinsRead() { updateAciaPins(EightBit::Chip::PinLevel::High); }
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void updateAciaPinsWrite() { updateAciaPins(EightBit::Chip::PinLevel::Low); }
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void updateAciaPins(EightBit::Chip::PinLevel rw);
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bool accessAcia();
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};
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