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32x: implement standard/ssf2 mapper

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This commit is contained in:
notaz 2018-01-21 18:55:38 +02:00
parent fda2f31020
commit 8b9dbcde38
6 changed files with 126 additions and 59 deletions
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75
pico/carthw/carthw.c
View file

@ -21,63 +21,76 @@ static int have_bank(u32 base)
return 1;
}
/* The SSFII mapper */
static unsigned char ssf2_banks[8];
/* standard/ssf2 mapper */
int carthw_ssf2_active;
unsigned char carthw_ssf2_banks[8];
static carthw_state_chunk carthw_ssf2_state[] =
{
{ CHUNK_CARTHW, sizeof(ssf2_banks), &ssf2_banks },
{ 0, 0, NULL }
{ CHUNK_CARTHW, sizeof(carthw_ssf2_banks), &carthw_ssf2_banks },
{ 0, 0, NULL }
};
static void carthw_ssf2_write8(u32 a, u32 d)
{
u32 target, base;
u32 target, base;
if ((a & 0xfffff0) != 0xa130f0) {
PicoWrite8_io(a, d);
return;
}
if ((a & 0xfffff0) != 0xa130f0) {
PicoWrite8_io(a, d);
return;
}
a &= 0x0e;
if (a == 0)
return;
a &= 0x0e;
if (a == 0)
return;
if (carthw_ssf2_banks[a >> 1] == d)
return;
ssf2_banks[a >> 1] = d;
base = d << 19;
target = a << 18;
if (!have_bank(base))
return;
base = d << 19;
target = a << 18;
if (!have_bank(base))
return;
carthw_ssf2_banks[a >> 1] = d;
cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
if (PicoIn.AHW & PAHW_32X)
p32x_update_banks();
}
static void carthw_ssf2_mem_setup(void)
{
cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1);
cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1);
}
static void carthw_ssf2_statef(void)
{
int i;
for (i = 1; i < 8; i++)
carthw_ssf2_write8(0xa130f0 | (i << 1), ssf2_banks[i]);
int i;
for (i = 1; i < 8; i++)
carthw_ssf2_write8(0xa130f0 | (i << 1), carthw_ssf2_banks[i]);
}
static void carthw_ssf2_unload(void)
{
memset(carthw_ssf2_banks, 0, sizeof(carthw_ssf2_banks));
carthw_ssf2_active = 0;
}
void carthw_ssf2_startup(void)
{
int i;
int i;
elprintf(EL_STATUS, "SSF2 mapper startup");
elprintf(EL_STATUS, "SSF2 mapper startup");
// default map
for (i = 0; i < 8; i++)
ssf2_banks[i] = i;
// default map
for (i = 0; i < 8; i++)
carthw_ssf2_banks[i] = i;
PicoCartMemSetup = carthw_ssf2_mem_setup;
PicoLoadStateHook = carthw_ssf2_statef;
carthw_chunks = carthw_ssf2_state;
PicoCartMemSetup = carthw_ssf2_mem_setup;
PicoLoadStateHook = carthw_ssf2_statef;
PicoCartUnloadHook = carthw_ssf2_unload;
carthw_chunks = carthw_ssf2_state;
carthw_ssf2_active = 1;
}

6
pico/carthw/carthw.h
View file

@ -14,8 +14,12 @@ void PicoSVPInit(void);
void PicoSVPStartup(void);
void PicoSVPMemSetup(void);
/* misc */
/* standard/ssf2 mapper */
extern int carthw_ssf2_active;
extern unsigned char carthw_ssf2_banks[8];
void carthw_ssf2_startup(void);
/* misc */
void carthw_Xin1_startup(void);
void carthw_realtec_startup(void);
void carthw_radica_startup(void);