#include "eeprom_spi.h"
-/* The SSFII mapper */
-static unsigned char ssf2_banks[8];
+static int have_bank(u32 base)
+{
+ // the loader allocs in 512K quantities
+ if (base >= Pico.romsize) {
+ elprintf(EL_ANOMALY|EL_STATUS, "carthw: missing bank @ %06x", base);
+ return 0;
+ }
+ return 1;
+}
+
+/* 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 (base + 0x80000 > Pico.romsize) {
- elprintf(EL_ANOMALY|EL_STATUS, "ssf2: missing bank @ %06x", 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;
}
base = d << 19;
goto do_map;
case 0x09:
- SRam.changed = 1;
+ Pico.sv.changed = 1;
eeprom_spi_write(d);
break;
case 0x0b:
return;
do_map:
- if (base + 0x80000 > Pico.romsize) {
- elprintf(EL_ANOMALY|EL_STATUS, "pier: missing bank @ %06x", base);
+ if (!have_bank(base))
return;
- }
+
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);
}
{
pier_regs[0] = 1;
pier_regs[1] = pier_regs[2] = pier_regs[3] = 0;
- pier_dump_prot = 3;
carthw_pier_statef();
eeprom_spi_init(NULL);
}
return;
}
+ pier_dump_prot = 3;
+
// create dump protection bank
for (i = 0; i < M68K_BANK_SIZE; i += 0x8000)
memcpy(Pico.rom + Pico.romsize + i, Pico.rom, 0x8000);
// save EEPROM
eeprom_state = eeprom_spi_init(&eeprom_size);
- SRam.flags = 0;
- SRam.size = 0x10000;
- SRam.data = calloc(1, SRam.size);
- if (!SRam.data)
- SRam.size = 0;
+ Pico.sv.flags = 0;
+ Pico.sv.size = 0x10000;
+ Pico.sv.data = calloc(1, Pico.sv.size);
+ if (!Pico.sv.data)
+ Pico.sv.size = 0;
carthw_pier_state[2].ptr = eeprom_state;
carthw_pier_state[2].size = eeprom_size;