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https://github.com/n64dev/cen64.git
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This code does not handle saving or loading of EEPROM data from a save file. Any save data will be lost once cen64 quits.
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
//
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// si/controller.h: Serial interface controller.
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//
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// CEN64: Cycle-Accurate Nintendo 64 Emulator.
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// Copyright (C) 2015, Tyler J. Stachecki.
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//
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// This file is subject to the terms and conditions defined in
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// 'LICENSE', which is part of this source code package.
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//
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#ifndef __si_controller_h__
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#define __si_controller_h__
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#include "common.h"
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struct bus_controller *bus;
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enum si_register {
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#define X(reg) reg,
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#include "si/registers.md"
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#undef X
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NUM_SI_REGISTERS
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};
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#ifdef DEBUG_MMIO_REGISTER_ACCESS
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extern const char *si_register_mnemonics[NUM_SI_REGISTERS];
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#endif
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#define EEPROM_SIZE 0x800
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struct eeprom {
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uint8_t data[EEPROM_SIZE];
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size_t size;
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};
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struct si_controller {
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struct bus_controller *bus;
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const uint8_t *rom;
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uint8_t command[64];
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uint8_t ram[64];
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uint32_t regs[NUM_SI_REGISTERS];
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uint32_t pif_status;
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uint8_t input[4];
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struct eeprom eeprom;
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};
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cen64_cold int si_init(struct si_controller *si, struct bus_controller *bus,
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const uint8_t *pif_rom, const uint8_t *cart_rom, bool dd_present);
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int read_pif_ram(void *opaque, uint32_t address, uint32_t *word);
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int read_pif_rom(void *opaque, uint32_t address, uint32_t *word);
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int read_si_regs(void *opaque, uint32_t address, uint32_t *word);
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int write_pif_ram(void *opaque, uint32_t address, uint32_t word, uint32_t dqm);
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int write_pif_rom(void *opaque, uint32_t address, uint32_t word, uint32_t dqm);
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int write_si_regs(void *opaque, uint32_t address, uint32_t word, uint32_t dqm);
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#endif
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