61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
// (C) 2018 by Folkert van Heusden
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// Released under Apache License v2.0
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#pragma once
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#include <stdint.h>
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#include <stdio.h>
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#include "tm-11.h"
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#include "rk05.h"
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#include "rx02.h"
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#include "tty.h"
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class cpu;
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class memory;
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typedef struct
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{
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uint16_t par, pdr;
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} page_t;
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class bus
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{
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private:
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cpu *c { nullptr };
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tm_11 *tm11 { nullptr };
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rk05 *rk05_ { nullptr };
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rx02 *rx02_ { nullptr };
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tty *tty_ { nullptr };
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memory *m { nullptr };
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page_t pages[16];
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uint16_t MMR2 { 0 }, MMR3 { 0 }, CPUERR { 0 }, PIR { 0 }, CSR { 0 };
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public:
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bus();
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~bus();
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void clearmem();
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void add_cpu(cpu *const c) { this -> c = c; }
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void add_tm11(tm_11 *tm11) { this -> tm11 = tm11; }
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void add_rk05(rk05 *rk05_) { this -> rk05_ = rk05_; }
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void add_rx02(rx02 *rx02_) { this -> rx02_ = rx02_; }
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void add_tty(tty *tty_) { this -> tty_ = tty_; }
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cpu *getCpu() { return this -> c; }
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uint16_t read(const uint16_t a, const bool word_mode, const bool use_prev=false);
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uint16_t readByte(const uint16_t a) { return read(a, true); }
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uint16_t readWord(const uint16_t a);
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uint16_t write(const uint16_t a, const bool word_mode, uint16_t value, const bool use_prev=false);
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uint8_t writeByte(const uint16_t a, const uint8_t value) { return write(a, true, value); }
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uint16_t writeWord(const uint16_t a, const uint16_t value);
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void setMMR2(const uint16_t value) { MMR2 = value; }
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uint32_t calculate_full_address(const uint16_t a);
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};
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