bios.h

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// -*- coding: utf-8-unix -*-
/*
 * Copyright (c) 2021-2025 Daishi Mori (mori0091)
 *
 * This software is released under the MIT License.\n
 * See https://github.com/mori0091/libmsx/blob/main/LICENSE
 *
 * GitHub libmsx project\n
 * https://github.com/mori0091/libmsx
 */
#pragma once
 
#ifndef BIOS_H
#define BIOS_H
 
#include <stdint.h>
#include "bios_const.h"
#include "bios_entry.h"
 
#ifndef __SDCCCALL
#define __sdcccall(x)
#endif
 
#define PAGE_SIZE           (uint16_t)(0x4000)
 
#define PAGE_ADDR(p)        ((void *)(PAGE_SIZE * (p)))
 
extern const uint8_t libmsx_initial_slots[4];
 
#define CARTRIDGE_SLOT  (libmsx_initial_slots[1])
 
inline uint8_t msx_get_version(void) {
  return MSX_SYSTEM_VERSION_CODE;
}
 
inline uint8_t msx_get_vsync_frequency(void) {
  return ((INTERNATIONAL_ID_1 & 0x80) ? 50 : 60);
}
 
uint8_t msx_RDSLT(uint8_t slot, void * addr);
 
void msx_WRSLT(uint8_t slot, void * addr, uint8_t value) __sdcccall(0);
 
void msx_ENASLT(uint8_t slot, void * addr);
 
uint8_t msx_get_slot(void * addr);
 
uint8_t msx_RSLREG(void);
 
void msx_WSLREG(uint8_t value);
 
uint8_t msx_GTSTCK(const uint8_t a);
 
uint8_t msx_GTTRIG(const uint8_t a);
 
void msx_CHGCPU(const uint8_t mode);
 
void msx_set_cpu_mode(const uint8_t mode);
 
uint8_t msx_GETCPU(void);
 
uint8_t msx_get_cpu_mode(void);
 
#ifndef __SDCCCALL
#undef __sdcccall
#endif
 
#endif