| 1 | #include "../PicoInt.h" |
| 2 | |
| 3 | /* 12-in-1 */ |
| 4 | static unsigned int carthw_12in1_read16(unsigned int a, int realsize) |
| 5 | { |
| 6 | // ?? |
| 7 | elprintf(EL_UIO, "12-in-1: read [%06x] @ %06x", a, SekPc); |
| 8 | return 0; |
| 9 | } |
| 10 | |
| 11 | static void carthw_12in1_write8(unsigned int a, unsigned int d, int realsize) |
| 12 | { |
| 13 | int len; |
| 14 | |
| 15 | if (a < 0xA13000 || a >= 0xA13040) { |
| 16 | elprintf(EL_ANOMALY, "12-in-1: unexpected write [%06x] %02x @ %06x", a, d, SekPc); |
| 17 | } |
| 18 | |
| 19 | a &= 0x3f; a <<= 16; |
| 20 | len = Pico.romsize - a; |
| 21 | if (len <= 0) { |
| 22 | elprintf(EL_ANOMALY, "12-in-1: missing bank @ %06x", a); |
| 23 | return; |
| 24 | } |
| 25 | |
| 26 | memcpy(Pico.rom, Pico.rom + 0x200000 + a, len); |
| 27 | } |
| 28 | |
| 29 | static void carthw_12in1_reset(void) |
| 30 | { |
| 31 | carthw_12in1_write8(0xA13000, 0, 0); |
| 32 | } |
| 33 | |
| 34 | void carthw_12in1_startup(void) |
| 35 | { |
| 36 | void *tmp; |
| 37 | |
| 38 | elprintf(EL_STATUS, "12-in-1 mapper detected"); |
| 39 | |
| 40 | tmp = realloc(Pico.rom, 0x200000 + 0x200000); |
| 41 | if (tmp == NULL) |
| 42 | { |
| 43 | elprintf(EL_STATUS, "OOM"); |
| 44 | return; |
| 45 | } |
| 46 | memcpy(Pico.rom + 0x200000, Pico.rom, 0x200000); |
| 47 | |
| 48 | PicoRead16Hook = carthw_12in1_read16; |
| 49 | PicoWrite8Hook = carthw_12in1_write8; |
| 50 | PicoResetHook = carthw_12in1_reset; |
| 51 | } |
| 52 | |