int vfsMemPutc(int caractere, VIRTUAL_FILE *f) {
unsigned char car = caractere;
if (VirtualFileWrite(&car, sizeof(car), 1, f) < 1)
return -1;
else
return caractere;
}
int gb_save_sram(VIRTUAL_FILE *fd, byte *buf,int size)
{
const int sram_tbl[]={1,1,1,4,16,8};
int sram_size = 0x2000 * sram_tbl[size];
#ifdef CHEAT_SUPPORT
cheat_decreate_cheat_map();
#endif
VirtualFileWrite(buf, sram_size, 1, fd);
#ifdef CHEAT_SUPPORT
cheat_create_cheat_map();
#endif
// sram_crc = crc;
return 1;
}
void vfsMemPuts(const char *s, VIRTUAL_FILE *f) {
VirtualFileWrite(s, strlen(s), 1, f);
}
//force: 1 to always write, 0 to only if changed
int machine_manage_sram(int mode, int force) {
char name[MAX_PATH];
VIRTUAL_FILE *fd;
int ramsize = 0;
if(menuConfig.file.filename[0] == '\0')
return;
pspGetStateName(name, STATE_SRAM);
switch(mode)
{
case SRAM_SAVE:
if (gblMachineType == EM_SMS) {
//Find out if something was written to the SRAM (which is zero initialized)
/* int i, modified = 0;
for (i=0;i<0x8000;i++) {
if (((u8*)cart.sram)[i] != 0)
modified = 1;
}
if (!modified)
break;*/
//Determine if something has changed (using the CRC)
uLong crc = crc32(0L, Z_NULL, 0);
crc = crc32(crc, cart.sram, 0x8000);
if (sram_crc == crc)
break;
sram_crc = crc;
}
else if (gblMachineType == EM_GBC) {
if (!(rom_get_loaded() && rom_has_battery()))
break;
//Determine if something has changed (using the CRC)
const int sram_tbl[]={1,1,1,4,16,8};
int sram_size = 0x2000 * sram_tbl[rom_get_info()->ram_size];
if (rom_get_info()->cart_type>=0x0f && rom_get_info()->cart_type<=0x13) {
int tmp = renderer_get_timer_state();
memcpy(get_sram() + sram_size, &tmp, sizeof(int));
sram_size += sizeof(int);
}
uLong crc = crc32(0L, Z_NULL, 0);
crc = crc32(crc, get_sram(), sram_size);
if (sram_crc == crc)
break;
sram_crc = crc;
}
if (BatteryWarning("Your battery is low!\nDo you want to save the SRAM contents?\n(This might corrupt your Memory Stick if your PSP stops during this operation.)")) {
fd = VirtualFileOpen(name, 0, VF_GZFILE, VF_O_WRITE);
if (fd)
{
if (gblMachineType == EM_SMS)
VirtualFileWrite(cart.sram, 0x8000, 1, fd);
else if (gblMachineType == EM_GBC)
gb_save_sram(fd, get_sram(), rom_get_info()->ram_size);
VirtualFileClose(fd);
}
}
break;
case SRAM_LOAD:
fd = VirtualFileOpen(name, 0, VF_GZFILE, VF_O_READ);
if (gblMachineType == EM_SMS) {
if(fd) {
sms.save = 1;
VirtualFileRead(cart.sram, 0x8000, 1, fd);
ramsize = 0x8000;
}
else
/* No SRAM file, so initialize memory */
memset(cart.sram, 0x00, 0x8000);
sram_crc = crc32(0L, Z_NULL, 0);
sram_crc = crc32(sram_crc, cart.sram, 0x8000);
}
else if (gblMachineType == EM_GBC) {
if (fd)
ramsize = gb_load_sram(fd, sram_space, sizeof(sram_space));
sram_crc = crc32(0L, Z_NULL, 0);
sram_crc = crc32(sram_crc, sram_space, ramsize);
}
if (fd)
VirtualFileClose(fd);
break;
}
return ramsize;
}
