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starting SMS work

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@756 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-08-16 13:00:07 +00:00
parent d8f51995c4
commit 3e49ffd0bf
10 changed files with 246 additions and 80 deletions
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50
pico/cart.c
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@ -13,7 +13,7 @@
#include "../unzip/unzip_stream.h"
static char *rom_exts[] = { "bin", "gen", "smd", "iso" };
static const char *rom_exts[] = { "bin", "gen", "smd", "iso", "sms", "gg", "sg" };
void (*PicoCartUnloadHook)(void) = NULL;
@ -99,7 +99,10 @@ pm_file *pm_open(const char *path)
if (zipentry->uncompressed_size >= 128*1024) goto found_rom_zip;
if (strlen(zipentry->name) < 5) continue;
ext = zipentry->name+strlen(zipentry->name)-3;
ext = zipentry->name + strlen(zipentry->name) - 2;
if (ext[-1] != '.') ext--;
if (ext[-1] != '.') ext--;
for (i = 0; i < sizeof(rom_exts)/sizeof(rom_exts[0]); i++)
if (strcasecmp(ext, rom_exts[i]) == 0) goto found_rom_zip;
}
@ -437,7 +440,7 @@ static unsigned char *PicoCartAlloc(int filesize)
return rom;
}
int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize)
int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize,int is_sms)
{
unsigned char *rom=NULL; int size, bytes_read;
if (f==NULL) return 1;
@ -478,19 +481,22 @@ int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize)
return 3;
}
// maybe we are loading MegaCD BIOS?
if (!(PicoAHW & PAHW_MCD) && size == 0x20000 && (!strncmp((char *)rom+0x124, "BOOT", 4) ||
!strncmp((char *)rom+0x128, "BOOT", 4))) {
PicoAHW |= PAHW_MCD;
rom = cd_realloc(rom, size);
}
if (!is_sms)
{
// maybe we are loading MegaCD BIOS?
if (!(PicoAHW & PAHW_MCD) && size == 0x20000 && (!strncmp((char *)rom+0x124, "BOOT", 4) ||
!strncmp((char *)rom+0x128, "BOOT", 4))) {
PicoAHW |= PAHW_MCD;
rom = cd_realloc(rom, size);
}
// Check for SMD:
if (size >= 0x4200 && (size&0x3fff)==0x200 &&
((rom[0x2280] == 'S' && rom[0x280] == 'E') || (rom[0x280] == 'S' && rom[0x2281] == 'E'))) {
DecodeSmd(rom,size); size-=0x200; // Decode and byteswap SMD
// Check for SMD:
if (size >= 0x4200 && (size&0x3fff)==0x200 &&
((rom[0x2280] == 'S' && rom[0x280] == 'E') || (rom[0x280] == 'S' && rom[0x2281] == 'E'))) {
DecodeSmd(rom,size); size-=0x200; // Decode and byteswap SMD
}
else Byteswap(rom,size); // Just byteswap
}
else Byteswap(rom,size); // Just byteswap
if (prom) *prom=rom;
if (psize) *psize=size;
@ -520,7 +526,7 @@ int PicoCartInsert(unsigned char *rom,unsigned int romsize)
PicoCartUnloadHook = NULL;
}
PicoAHW &= PAHW_MCD;
PicoAHW &= PAHW_MCD|PAHW_SMS;
PicoMemResetHooks();
PicoDmaHook = NULL;
@ -531,7 +537,7 @@ int PicoCartInsert(unsigned char *rom,unsigned int romsize)
PicoMemReset();
if (!(PicoAHW & PAHW_MCD))
if (!(PicoAHW & (PAHW_MCD|PAHW_SMS)))
PicoCartDetect();
// setup correct memory map for loaded ROM
@ -543,15 +549,25 @@ int PicoCartInsert(unsigned char *rom,unsigned int romsize)
case PAHW_SVP: PicoMemSetup(); break;
case PAHW_MCD: PicoMemSetupCD(); break;
case PAHW_PICO: PicoMemSetupPico(); break;
case PAHW_SMS: PicoMemSetupMS(); break;
}
PicoMemReset();
PicoPower();
if (PicoAHW & PAHW_SMS)
PicoPowerMS();
else
PicoPower();
return 0;
}
void PicoCartUnload(void)
{
if (PicoCartUnloadHook != NULL) {
PicoCartUnloadHook();
PicoCartUnloadHook = NULL;
}
if (Pico.rom != NULL) {
SekFinishIdleDet();
free(Pico.rom);