Raimon @ quifisraimon
22fd027cff
- [NEW] Afegida la rom de Combat. - [NEW] Afegit mòdul "rom" - [NEW] Ampliats stubs de "mem", "tia" i "pia"
41 lines
799 B
C++
41 lines
799 B
C++
#include "rom.h"
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
namespace rom
|
|
{
|
|
uint8_t *data = NULL;
|
|
int size = 0;
|
|
uint16_t mask = 0xffff;
|
|
|
|
void load(const char* filename)
|
|
{
|
|
if (data) free(data);
|
|
size = 0;
|
|
|
|
FILE* f = fopen(filename, "rb");
|
|
if (f) {
|
|
fseek(f, 0, SEEK_END);
|
|
size = ftell(f);
|
|
fseek(f, 0, SEEK_SET);
|
|
data = (uint8_t*)malloc(size);
|
|
fread(data, size, 1, f);
|
|
fclose(f);
|
|
|
|
if (size <= 4096) mask = size-1;
|
|
// [TODO] Gestionar ROMs mes grans de 4K
|
|
}
|
|
}
|
|
|
|
uint8_t read(uint16_t address)
|
|
{
|
|
return data[address & mask];
|
|
}
|
|
|
|
void write(uint16_t address, uint8_t value)
|
|
{
|
|
data[address & mask] = value;
|
|
}
|
|
|
|
}
|