| 1 | #include "../../PicoInt.h" |
| 2 | |
| 3 | svp_t *svp = NULL; |
| 4 | |
| 5 | void PicoSVPInit(void) |
| 6 | { |
| 7 | void *tmp; |
| 8 | |
| 9 | elprintf(0xffff, "SVP init"); |
| 10 | |
| 11 | tmp = realloc(Pico.rom, 0x200000 + sizeof(*svp)); |
| 12 | if (tmp == NULL) |
| 13 | { |
| 14 | elprintf(EL_STATUS, "OOM for SVP data"); |
| 15 | return; |
| 16 | } |
| 17 | |
| 18 | Pico.rom = tmp; |
| 19 | svp = (void *) ((char *)tmp + 0x200000); |
| 20 | memset(svp, 0, sizeof(*svp)); |
| 21 | |
| 22 | // init ok, setup hooks.. |
| 23 | PicoRead16Hook = PicoSVPRead16; |
| 24 | PicoWrite8Hook = PicoSVPWrite8; |
| 25 | PicoWrite16Hook = PicoSVPWrite16; |
| 26 | PicoDmaHook = PicoSVPDma; |
| 27 | } |
| 28 | |
| 29 | |
| 30 | void PicoSVPReset(void) |
| 31 | { |
| 32 | elprintf(0xffff, "SVP reset"); |
| 33 | |
| 34 | ssp1601_reset(&svp->ssp1601); |
| 35 | } |
| 36 | |
| 37 | |
| 38 | int PicoSVPDma(unsigned int source, unsigned short **srcp, unsigned short **limitp) |
| 39 | { |
| 40 | if ((source & 0xfe0000) == 0x300000) |
| 41 | { |
| 42 | elprintf(EL_VDPDMA|0xffff, "SVP DmaSlow from %06x", source); |
| 43 | source &= 0x1fffe; |
| 44 | *srcp = (unsigned short *)(svp->ram + source); |
| 45 | *limitp = (unsigned short *)(svp->ram + sizeof(svp->ram)); |
| 46 | return 1; |
| 47 | } |
| 48 | |
| 49 | return 0; |
| 50 | } |
| 51 | |