1 #include "../../PicoInt.h"
4 typedef unsigned char u8;
5 typedef unsigned short u16;
6 typedef unsigned int u32;
10 #define CLEAR_DETECT(pc_start,pc_end,text) \
11 if (d == 0 && SekPc >= pc_start && SekPc < pc_end) \
14 elprintf(EL_UIO, text); \
19 unsigned int PicoSVPRead16(unsigned int a, int realsize)
22 static int a15004_looping = 0;
24 // dram: 300000-31ffff
25 if ((a & 0xfe0000) == 0x300000)
26 d = *(u16 *)(svp->dram + (a&0x1fffe));
28 // "cell arrange" 1: 390000-39ffff
29 else if ((a & 0xff0000) == 0x390000) {
30 // this is rewritten 68k code
31 unsigned int a1 = a >> 1;
32 a1 = (a1 & 0x7001) | ((a1 & 0x3e) << 6) | ((a1 & 0xfc0) >> 5);
33 d = ((u16 *)svp->dram)[a1];
36 // "cell arrange" 2: 3a0000-3affff
37 else if ((a & 0xff0000) == 0x3a0000) {
38 // this is rewritten 68k code
39 unsigned int a1 = a >> 1;
40 a1 = (a1 & 0x7801) | ((a1 & 0x1e) << 6) | ((a1 & 0x7e0) >> 4);
41 d = ((u16 *)svp->dram)[a1];
45 else if ((a & 0xfffff0) == 0xa15000) {
49 d = svp->ssp1601.gr[SSP_XST].h;
53 d = svp->ssp1601.gr[SSP_PM0].h;
54 svp->ssp1601.gr[SSP_PM0].h &= ~1;
55 if (d&1) a15004_looping = 0;
60 elprintf(EL_UIO|EL_ANOMALY, "SVP FIXME: unhandled r%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);
63 elprintf(EL_UIO, "SVP r%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);
65 if (a == 0xa15004 && !(d&1)) {
67 elprintf(EL_SVP, "SVP det TIGHT loop: a15004");
70 else a15004_looping = 0;
72 // if (a == 0x30fe02) d = 1;
77 void PicoSVPWrite8(unsigned int a, unsigned int d, int realsize)
79 elprintf(EL_UIO, "!!! SVP w%i: [%06x], %08x @%06x", realsize, a&0xffffff, d, SekPc);
82 void PicoSVPWrite16(unsigned int a, unsigned int d, int realsize)
84 static int clearing_ram = 0;
87 if ((a & 0xfe0000) == 0x300000)
88 *(u16 *)(svp->dram + (a&0x1fffe)) = d;
91 else if ((a & 0xfffff0) == 0xa15000) {
92 if (a == 0xa15000 || a == 0xa15002) {
94 svp->ssp1601.gr[SSP_XST].h = d;
95 svp->ssp1601.gr[SSP_PM0].h |= 2;
96 svp->ssp1601.emu_status &= ~SSP_WAIT_PM0;
98 //else if (a == 0xa15006) svp->ssp1601.gr[SSP_PM0].h = d | (d << 1);
99 // 0xa15006 probably has 'halt'
103 if (a == 0x30fe06 && d != 0)
104 svp->ssp1601.emu_status &= ~SSP_WAIT_30FE06;
106 if (a == 0x30fe08 && d != 0)
107 svp->ssp1601.emu_status &= ~SSP_WAIT_30FE08;
109 // debug: detect RAM clears..
110 CLEAR_DETECT(0x0221dc, 0x0221f0, "SVP RAM CLEAR (full) @ 0221C2");
111 CLEAR_DETECT(0x02204c, 0x022068, "SVP RAM CLEAR 300000-31ffbf (1) @ 022032");
112 CLEAR_DETECT(0x021900, 0x021ff0, "SVP RAM CLEAR 300000-305fff");
113 CLEAR_DETECT(0x0220b0, 0x0220cc, "SVP RAM CLEAR 300000-31ffbf (2) @ 022096");
116 elprintf(EL_UIO, "SVP w%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);