vmem.h

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// -*- coding: utf-8-unix -*-
/*
 * Copyright (c) 2021-2024 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 VMEM_H
#define VMEM_H
 
#include <stdint.h>
#include <stddef.h>
 
#include "io.h"
 
// ---- VRAM access
typedef uint32_t vmemptr_t;
 
void vmem_set_read_address(vmemptr_t loc);
 
void vmem_set_write_address(vmemptr_t loc);
 
inline uint8_t vmem_get(void) {
  return vdp_port0;
}
 
inline void vmem_set(uint8_t val) {
  vdp_port0 = val;
}
 
void vmem_read(vmemptr_t src, void* dst, uint16_t len);
 
void vmem_write(vmemptr_t dst, void* src, uint16_t len);
 
void vmem_memset(vmemptr_t dst, uint8_t val, uint16_t len);
 
#endif