46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
// (C) 2018-2023 by Folkert van Heusden
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// Released under MIT license
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#pragma once
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#include <atomic>
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#include <stdint.h>
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#include <stdio.h>
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#include <string>
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#include <vector>
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#include "disk_backend.h"
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#define RL02_CSR 0174400 // control status register
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#define RL02_BAR 0174402 // bus address register
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#define RL02_DAR 0174404 // disk address register
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#define RL02_MPR 0174406 // multi purpose register
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#define RL02_BASE RL02_CSR
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#define RL02_END (RL02_MPR + 2)
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class bus;
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class rl02
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{
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private:
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bus *const b;
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uint16_t registers[4];
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uint8_t xfer_buffer[512];
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std::vector<disk_backend *> fhs;
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std::atomic_bool *const disk_read_acitivity { nullptr };
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std::atomic_bool *const disk_write_acitivity { nullptr };
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uint32_t calcOffset(uint16_t);
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public:
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rl02(const std::vector<disk_backend *> & files, bus *const b, std::atomic_bool *const disk_read_acitivity, std::atomic_bool *const disk_write_acitivity);
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virtual ~rl02();
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uint8_t readByte(const uint16_t addr);
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uint16_t readWord(const uint16_t addr);
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void writeByte(const uint16_t addr, const uint8_t v);
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void writeWord(const uint16_t addr, const uint16_t v);
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};
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