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1 | #include "../../PicoInt.h" |
2 | |
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3 | svp_t *svp = NULL; |
4 | |
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5 | void PicoSVPInit(void) |
6 | { |
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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; |
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50 | } |
51 | |