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Radica mapper added

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@482 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-06-13 12:29:07 +00:00
parent 1832075ec7
commit 0b35350da6
3 changed files with 70 additions and 2 deletions
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6
Pico/Cart.c
View file

@ -707,6 +707,12 @@ static void PicoCartDetect(void)
carthw_realtec_startup();
}
// Radica mapper
else if (name_cmp("KID CHAMELEON") == 0 && Pico.romsize > 0x100000)
{
carthw_radica_startup();
}
// Some games malfunction if SRAM is not filled with 0xff
if (name_cmp("DINO DINI'S SOCCER") == 0 ||
name_cmp("MICRO MACHINES II") == 0)

65
Pico/carthw/carthw.c
View file

@ -44,7 +44,7 @@ static void carthw_12in1_write8(unsigned int a, unsigned int d, int realsize)
a &= 0x3f; a <<= 16;
len = Pico.romsize - a;
if (len <= 0) {
elprintf(EL_ANOMALY, "12-in-1: missing bank @ %06x", a);
elprintf(EL_ANOMALY|EL_STATUS, "12-in-1: missing bank @ %06x", a);
return;
}
@ -132,7 +132,7 @@ static void carthw_realtec_write8(unsigned int a, unsigned int d, int realsize)
}
}
void carthw_realtec_reset(void)
static void carthw_realtec_reset(void)
{
int i;
/* map boot code */
@ -162,3 +162,64 @@ void carthw_realtec_startup(void)
PicoResetHook = carthw_realtec_reset;
}
/* Radica mapper, based on DevSter's info
* http://devster.monkeeh.com/sega/radica/
*/
static unsigned int carthw_radica_baddr = 0;
static carthw_state_chunk carthw_radica_state[] =
{
{ CHUNK_CARTHW, sizeof(carthw_radica_baddr), &carthw_radica_baddr },
{ 0, 0, NULL }
};
static unsigned int carthw_radica_read16(unsigned int a, int realsize)
{
if ((a & 0xffff80) != 0xa13000) {
elprintf(EL_UIO, "radica: r16 %06x", a);
return 0;
}
carthw_radica_baddr = a;
a = (a & 0x7e) << 15;
if (a >= Pico.romsize) {
elprintf(EL_ANOMALY|EL_STATUS, "radica: missing bank @ %06x", a);
return 0;
}
memcpy(Pico.rom, Pico.rom + Pico.romsize + a, Pico.romsize - a);
return 0;
}
static void carthw_radica_statef(void)
{
carthw_radica_read16(carthw_radica_baddr, 0);
}
static void carthw_radica_reset(void)
{
memcpy(Pico.rom, Pico.rom + Pico.romsize, Pico.romsize);
}
void carthw_radica_startup(void)
{
void *tmp;
elprintf(EL_STATUS, "Radica mapper detected");
tmp = realloc(Pico.rom, Pico.romsize * 2);
if (tmp == NULL)
{
elprintf(EL_STATUS, "OOM");
return;
}
Pico.rom = tmp;
memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize);
PicoRead16Hook = carthw_radica_read16;
PicoResetHook = carthw_radica_reset;
PicoLoadStateHook = carthw_radica_statef;
carthw_chunks = carthw_radica_state;
}

1
Pico/carthw/carthw.h
View file

@ -20,3 +20,4 @@ void PicoSVPWrite16(unsigned int a, unsigned int d, int realsize);
/* misc */
void carthw_12in1_startup(void);
void carthw_realtec_startup(void);
void carthw_radica_startup(void);