mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
svp. does some output now
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@324 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
parent
30752975e0
commit
d26dc685a4
6 changed files with 170 additions and 70 deletions
|
@ -41,7 +41,7 @@ static void VideoWrite(u16 d)
|
|||
case 3: Pico.m.dirtyPal = 1;
|
||||
Pico.cram [(a>>1)&0x003f]=d; break; // wraps (Desert Strike)
|
||||
case 5: Pico.vsram[(a>>1)&0x003f]=d; break;
|
||||
default:elprintf(EL_ANOMALY, "VDP write %04x with bad type %i", d, Pico.video.type); break;
|
||||
//default:elprintf(EL_ANOMALY, "VDP write %04x with bad type %i", d, Pico.video.type); break;
|
||||
}
|
||||
|
||||
//dprintf("w[%i] @ %04x, inc=%i [%i|%i]", Pico.video.type, a, Pico.video.reg[0xf], Pico.m.scanline, SekCyclesDone());
|
||||
|
|
|
@ -19,11 +19,55 @@ typedef unsigned int u32;
|
|||
unsigned int PicoSVPRead16(unsigned int a, int realsize)
|
||||
{
|
||||
unsigned int d = 0;
|
||||
static int a15004_looping = 0;
|
||||
|
||||
if ((a & 0xfe0000) == 0x300000)
|
||||
// dram: 300000-31ffff
|
||||
if ((a & 0xfe0000) == 0x300000)
|
||||
d = *(u16 *)(svp->dram + (a&0x1fffe));
|
||||
|
||||
elprintf(EL_UIO, "SVP r%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);
|
||||
// "cell arrange" 1: 390000-39ffff
|
||||
else if ((a & 0xff0000) == 0x390000) {
|
||||
// this is rewritten 68k code
|
||||
unsigned int a1 = a >> 1;
|
||||
a1 = (a1 & 0x7001) | ((a1 & 0x3e) << 6) | ((a1 & 0xfc0) >> 5);
|
||||
d = ((u16 *)svp->dram)[a1];
|
||||
}
|
||||
|
||||
// "cell arrange" 2: 3a0000-3affff
|
||||
else if ((a & 0xff0000) == 0x3a0000) {
|
||||
// this is rewritten 68k code
|
||||
unsigned int a1 = a >> 1;
|
||||
a1 = (a1 & 0x7801) | ((a1 & 0x1e) << 6) | ((a1 & 0x7e0) >> 4);
|
||||
d = ((u16 *)svp->dram)[a1];
|
||||
}
|
||||
|
||||
// regs
|
||||
else if ((a & 0xfffff0) == 0xa15000) {
|
||||
switch (a & 0xf) {
|
||||
case 0:
|
||||
case 2:
|
||||
d = svp->ssp1601.gr[SSP_XST].h;
|
||||
break;
|
||||
|
||||
case 4:
|
||||
d = svp->ssp1601.gr[SSP_PM0].h;
|
||||
svp->ssp1601.gr[SSP_PM0].h &= ~1;
|
||||
if (d&1) a15004_looping = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
elprintf(EL_UIO|EL_ANOMALY, "SVP FIXME: unhandled r%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);
|
||||
|
||||
if (!a15004_looping)
|
||||
elprintf(EL_UIO, "SVP r%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);
|
||||
|
||||
if (a == 0xa15004 && !(d&1)) {
|
||||
if (!a15004_looping)
|
||||
elprintf(EL_SVP, "SVP det TIGHT loop: a15004");
|
||||
a15004_looping = 1;
|
||||
}
|
||||
else a15004_looping = 0;
|
||||
|
||||
// if (a == 0x30fe02) d = 1;
|
||||
|
||||
|
@ -39,14 +83,28 @@ void PicoSVPWrite16(unsigned int a, unsigned int d, int realsize)
|
|||
{
|
||||
static int clearing_ram = 0;
|
||||
|
||||
if ((a & 0xfe0000) == 0x300000)
|
||||
// DRAM
|
||||
if ((a & 0xfe0000) == 0x300000)
|
||||
*(u16 *)(svp->dram + (a&0x1fffe)) = d;
|
||||
|
||||
// regs
|
||||
else if ((a & 0xfffff0) == 0xa15000) {
|
||||
if (a == 0xa15000 || a == 0xa15002) {
|
||||
// just guessing here
|
||||
svp->ssp1601.gr[SSP_XST].h = d;
|
||||
svp->ssp1601.gr[SSP_PM0].h |= 2;
|
||||
svp->ssp1601.emu_status &= ~SSP_WAIT_PM0;
|
||||
}
|
||||
//else if (a == 0xa15006) svp->ssp1601.gr[SSP_PM0].h = d | (d << 1);
|
||||
// 0xa15006 probably has 'halt'
|
||||
}
|
||||
|
||||
|
||||
if (a == 0x30fe06 && d != 0)
|
||||
svp->ssp1601.emu_status &= ~SSP_30FE06_WAIT;
|
||||
svp->ssp1601.emu_status &= ~SSP_WAIT_30FE06;
|
||||
|
||||
if (a == 0x30fe08 && d != 0)
|
||||
svp->ssp1601.emu_status &= ~SSP_30FE08_WAIT;
|
||||
svp->ssp1601.emu_status &= ~SSP_WAIT_30FE08;
|
||||
|
||||
// debug: detect RAM clears..
|
||||
CLEAR_DETECT(0x0221dc, 0x0221f0, "SVP RAM CLEAR (full) @ 0221C2");
|
||||
|
@ -55,10 +113,6 @@ void PicoSVPWrite16(unsigned int a, unsigned int d, int realsize)
|
|||
CLEAR_DETECT(0x0220b0, 0x0220cc, "SVP RAM CLEAR 300000-31ffbf (2) @ 022096");
|
||||
clearing_ram = 0;
|
||||
|
||||
elprintf(EL_UIO, "SVP w%i: [%06x], %04x @%06x", realsize, a&0xffffff, d, SekPc);
|
||||
|
||||
// just guessing here
|
||||
if (a == 0xa15002) svp->ssp1601.gr[SSP_XST].h = d;
|
||||
else if (a == 0xa15006) svp->ssp1601.gr[SSP_PM0].h = d | (d << 1);
|
||||
elprintf(EL_UIO, "SVP w%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);
|
||||
}
|
||||
|
||||
|
|
|
@ -66,7 +66,9 @@
|
|||
* size: 16?
|
||||
* desc: Programmable Memory access register.
|
||||
* On reset, or when one (both?) GP0 bits are clear,
|
||||
* acts as some additional status reg?
|
||||
* acts as status for XST, mapped at 015004 at 68k side:
|
||||
* bit0: ssp has written something to XST (cleared when 015004 is read)
|
||||
* bit1: 68k has written something through a1500{0|2} (cleared on PM0 read)
|
||||
*
|
||||
* 9. "PM1"
|
||||
* size: 16?
|
||||
|
@ -80,8 +82,9 @@
|
|||
*
|
||||
* 11. "XST"
|
||||
* size: 16?
|
||||
* desc: eXternal STate. Mapped to a15000 at 68k side.
|
||||
* desc: eXternal STate. Mapped to a15000 and a15002 at 68k side.
|
||||
* Can be programmed as PMAR? (only seen in test mode code)
|
||||
* Affects PM0 when written to?
|
||||
*
|
||||
* 12. "PM4"
|
||||
* size: 16?
|
||||
|
@ -128,6 +131,8 @@
|
|||
*
|
||||
* Instruction notes
|
||||
*
|
||||
* ld a, * doesn't affect flags! (e: A_LAW.SC, Div_c_dp.sc)
|
||||
*
|
||||
* mld (rj), (ri) [, b]
|
||||
* operation: A = 0; P = (rj) * (ri)
|
||||
* notes: based on IIR_4B.SC sample. flags? what is b???
|
||||
|
@ -141,19 +146,24 @@
|
|||
* name: multiply and subtract?
|
||||
* notes: not used by VR code.
|
||||
*
|
||||
* ld a, * doesn't affect flags! (e: A_LAW.SC, Div_c_dp.sc)
|
||||
* mod cond, op
|
||||
* mod cond, shr does arithmetic shift
|
||||
*
|
||||
* memory map:
|
||||
* 000000 - 1fffff ROM, accessable by both
|
||||
* 200000 - 2fffff unused?
|
||||
* 300000 - 30ffff DRAM, both
|
||||
* 310000 - 31ffff cleared, but never(?) accessed?
|
||||
* 300000 - 31ffff DRAM, both
|
||||
* 320000 - 38ffff unused?
|
||||
* 390000 - 3907ff IRAM. can only be accessed by ssp?
|
||||
* 390000 - 39ffff similar mapping to "cell arrange" in Sega CD, 68k only?
|
||||
* 3a0000 - 3affff similar mapping to "cell arrange" in Sega CD, a bit different
|
||||
*
|
||||
* 30fe02 - 0 if SVP busy, 1 if done (set by SVP, checked and cleared by 68k)
|
||||
* 30fe06 - also sync related.
|
||||
* 30fe08 - job number [1-12] for SVP. 0 means nothing. Set by 68k, read-cleared by SVP.
|
||||
* 30fe08 - job number [1-12] for SVP. 0 means no job. Set by 68k, read-cleared by SVP.
|
||||
*
|
||||
* misc:
|
||||
* pressing all buttons while resetting game will kick into test mode
|
||||
*
|
||||
* Assumptions in this code
|
||||
* P is not directly writeable
|
||||
|
@ -202,31 +212,31 @@
|
|||
}
|
||||
|
||||
// flags
|
||||
#define FLAG_L (1<<0xc)
|
||||
#define FLAG_Z (1<<0xd)
|
||||
#define FLAG_V (1<<0xe)
|
||||
#define FLAG_N (1<<0xf)
|
||||
#define SSP_FLAG_L (1<<0xc)
|
||||
#define SSP_FLAG_Z (1<<0xd)
|
||||
#define SSP_FLAG_V (1<<0xe)
|
||||
#define SSP_FLAG_N (1<<0xf)
|
||||
|
||||
// update ZN according to 32bit ACC.
|
||||
#define UPD_ACC_ZN \
|
||||
rST &= ~(FLAG_Z|FLAG_N); \
|
||||
if (!rA32) rST |= FLAG_Z; \
|
||||
else rST |= (rA32>>16)&FLAG_N;
|
||||
rST &= ~(SSP_FLAG_Z|SSP_FLAG_N); \
|
||||
if (!rA32) rST |= SSP_FLAG_Z; \
|
||||
else rST |= (rA32>>16)&SSP_FLAG_N;
|
||||
|
||||
// it seems SVP code never checks for L and OV, so we leave them out.
|
||||
// rST |= (t>>4)&FLAG_L;
|
||||
// rST |= (t>>4)&SSP_FLAG_L;
|
||||
#define UPD_t_LZVN \
|
||||
rST &= ~(FLAG_L|FLAG_Z|FLAG_V|FLAG_N); \
|
||||
if (!t) rST |= FLAG_Z; \
|
||||
else rST |= t&FLAG_N; \
|
||||
rST &= ~(SSP_FLAG_L|SSP_FLAG_Z|SSP_FLAG_V|SSP_FLAG_N); \
|
||||
if (!t) rST |= SSP_FLAG_Z; \
|
||||
else rST |= t&SSP_FLAG_N; \
|
||||
|
||||
// standard cond processing.
|
||||
// again, only Z and N is checked, as SVP doesn't seem to use any other conds.
|
||||
#define COND_CHECK \
|
||||
switch (op&0xf0) { \
|
||||
case 0x00: cond = 1; break; /* always true */ \
|
||||
case 0x50: cond = !((rST ^ (op<<5)) & FLAG_Z); break; /* Z matches f(?) bit */ \
|
||||
case 0x70: cond = !((rST ^ (op<<7)) & FLAG_N); break; /* N matches f(?) bit */ \
|
||||
case 0x50: cond = !((rST ^ (op<<5)) & SSP_FLAG_Z); break; /* Z matches f(?) bit */ \
|
||||
case 0x70: cond = !((rST ^ (op<<7)) & SSP_FLAG_N); break; /* N matches f(?) bit */ \
|
||||
default:elprintf(EL_SVP, "unimplemented cond @ %04x", GET_PPC_OFFS()); break; \
|
||||
}
|
||||
|
||||
|
@ -354,6 +364,14 @@ int lil[32] = { 0, }, lilp = 0;
|
|||
|
||||
static void debug_dump2file(const char *fname, void *mem, int len);
|
||||
|
||||
#define overwite_write(dst, d) \
|
||||
{ \
|
||||
if (d & 0xf000) { dst &= ~0xf000; dst |= d & 0xf000; } \
|
||||
if (d & 0x0f00) { dst &= ~0x0f00; dst |= d & 0x0f00; } \
|
||||
if (d & 0x00f0) { dst &= ~0x00f0; dst |= d & 0x00f0; } \
|
||||
if (d & 0x000f) { dst &= ~0x000f; dst |= d & 0x000f; } \
|
||||
}
|
||||
|
||||
static u32 pm_io(int reg, int write, u32 d)
|
||||
{
|
||||
if (ssp->emu_status & SSP_PMC_SET) {
|
||||
|
@ -389,22 +407,31 @@ static u32 pm_io(int reg, int write, u32 d)
|
|||
if (reg == 4 || (rST & 0x60))
|
||||
{
|
||||
#define CADDR ((((mode<<16)&0x7f0000)|addr)<<1)
|
||||
unsigned short *dram = (unsigned short *)svp->dram;
|
||||
if (write)
|
||||
{
|
||||
/* TODO: 0c18 mode? */
|
||||
int mode = ssp->pmac_write[reg]&0xffff;
|
||||
int addr = ssp->pmac_write[reg]>>16;
|
||||
switch (mode) {
|
||||
case 0x0018: elprintf(EL_SVP, "ssp DRAM w [%06x] %04x", CADDR, d);
|
||||
((unsigned short *)svp->dram)[addr] = d;
|
||||
dram[addr] = d;
|
||||
break;
|
||||
case 0x0418: elprintf(EL_SVP, "ssp DRAM w [%06x] %04x (overwr)", CADDR, d);
|
||||
overwite_write(dram[addr], d);
|
||||
break;
|
||||
case 0x0818: elprintf(EL_SVP, "ssp DRAM w [%06x] %04x (inc 1)", CADDR, d);
|
||||
((unsigned short *)svp->dram)[addr] = d;
|
||||
dram[addr] = d;
|
||||
ssp->pmac_write[reg] += 1<<16;
|
||||
break;
|
||||
case 0x081c: iram_write(addr, d, reg, 1); break; // checked: used by code @ 0902
|
||||
case 0x101c: iram_write(addr, d, reg, 2); break; // checked: used by code @ 3b7c
|
||||
case 0x4018: elprintf(EL_SVP, "ssp DRAM w [%06x] %04x (cell inc)", CADDR, d);
|
||||
((unsigned short *)svp->dram)[addr] = d;
|
||||
dram[addr] = d;
|
||||
ssp->pmac_write[reg] += (addr&1) ? (31<<16) : (1<<16);
|
||||
break;
|
||||
case 0x4418: elprintf(EL_SVP, "ssp DRAM w [%06x] %04x (overwr, cell inc)", CADDR, d);
|
||||
overwite_write(dram[addr], d);
|
||||
ssp->pmac_write[reg] += (addr&1) ? (31<<16) : (1<<16);
|
||||
break;
|
||||
default: elprintf(EL_SVP|EL_ANOMALY, "ssp PM%i unhandled write mode %04x, [%06x] %04x @ %04x",
|
||||
|
@ -415,33 +442,33 @@ static u32 pm_io(int reg, int write, u32 d)
|
|||
{
|
||||
int mode = ssp->pmac_read[reg]&0xffff;
|
||||
int addr = ssp->pmac_read[reg]>>16;
|
||||
if ((mode & 0xfff0) == 0x0800) { // ROM, inc 1, verified to be correct
|
||||
elprintf(EL_SVP, "ssp ROM r [%06x] %04x", CADDR,
|
||||
((unsigned short *)Pico.rom)[addr|((mode&0xf)<<16)]);
|
||||
ssp->pmac_read[reg] += 1<<16;
|
||||
d = ((unsigned short *)Pico.rom)[addr|((mode&0xf)<<16)];
|
||||
goto ext_io_end;
|
||||
}
|
||||
|
||||
switch (mode) {
|
||||
case 0x0807:
|
||||
case 0x0808:
|
||||
case 0x0809: elprintf(EL_SVP, "ssp ROM r [%06x] %04x", CADDR,
|
||||
((unsigned short *)Pico.rom)[addr|((mode&0xf)<<16)]);
|
||||
// possibly correct, the first word read is some sort of counter, sane values in ROM
|
||||
case 0x0018: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x", CADDR, dram[addr]);
|
||||
d = dram[addr]; // checked
|
||||
break;
|
||||
case 0x0818: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x (inc 1)", CADDR, dram[addr]);
|
||||
ssp->pmac_read[reg] += 1<<16;
|
||||
d = ((unsigned short *)Pico.rom)[addr|((mode&0xf)<<16)];
|
||||
d = dram[addr];
|
||||
break;
|
||||
case 0x0018: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x", CADDR, ((unsigned short *)svp->dram)[addr]);
|
||||
d = ((unsigned short *)svp->dram)[addr]; // checked
|
||||
break;
|
||||
case 0x0818: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x (inc 1)", CADDR, ((unsigned short *)svp->dram)[addr]);
|
||||
ssp->pmac_read[reg] += 1<<16;
|
||||
d = ((unsigned short *)svp->dram)[addr];
|
||||
break;
|
||||
case 0x3018: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x (inc 32)", CADDR, ((unsigned short *)svp->dram)[addr]);
|
||||
case 0x3018: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x (inc 32)", CADDR, dram[addr]);
|
||||
ssp->pmac_read[reg] += 32<<16;
|
||||
d = ((unsigned short *)svp->dram)[addr];
|
||||
d = dram[addr];
|
||||
break;
|
||||
case 0xa818: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x (dec 16)", CADDR, ((unsigned short *)svp->dram)[addr]);
|
||||
case 0xa818: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x (dec 16)", CADDR, dram[addr]);
|
||||
ssp->pmac_read[reg] -= 16<<16;
|
||||
d = ((unsigned short *)svp->dram)[addr];
|
||||
d = dram[addr];
|
||||
break;
|
||||
case 0xb818: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x (dec 128?)", CADDR, ((unsigned short *)svp->dram)[addr]);
|
||||
case 0xb818: elprintf(EL_SVP, "ssp DRAM r [%06x] %04x (dec 128?)", CADDR, dram[addr]);
|
||||
ssp->pmac_read[reg] -= 128<<16;
|
||||
d = ((unsigned short *)svp->dram)[addr];
|
||||
d = dram[addr];
|
||||
break;
|
||||
default: elprintf(EL_SVP|EL_ANOMALY, "ssp PM%i unhandled read mode %04x, [%06x] @ %04x",
|
||||
reg, mode, CADDR, GET_PPC_OFFS());
|
||||
|
@ -450,6 +477,7 @@ static u32 pm_io(int reg, int write, u32 d)
|
|||
}
|
||||
}
|
||||
|
||||
ext_io_end:
|
||||
// PMC value corresponds to last PMR accessed (not sure).
|
||||
rPMC.v = ssp->pmac_read[write ? reg + 6 : reg];
|
||||
|
||||
|
@ -466,7 +494,12 @@ static u32 read_PM0(void)
|
|||
if (d != (u32)-1) return d;
|
||||
if (GET_PPC_OFFS() != 0x800 || rPM0 != 0) // debug
|
||||
elprintf(EL_SVP, "PM0 raw r %04x @ %04x", rPM0, GET_PPC_OFFS());
|
||||
return rPM0;
|
||||
d = rPM0;
|
||||
if (!(d & 2) && (GET_PPC_OFFS() == 0x800 || GET_PPC_OFFS() == 0x1851E)) {
|
||||
ssp->emu_status |= SSP_WAIT_PM0; elprintf(EL_SVP, "det TIGHT loop: PM0");
|
||||
}
|
||||
rPM0 &= ~2; // ?
|
||||
return d;
|
||||
}
|
||||
|
||||
static void write_PM0(u32 d)
|
||||
|
@ -474,7 +507,7 @@ static void write_PM0(u32 d)
|
|||
u32 r = pm_io(0, 1, d);
|
||||
if (r != (u32)-1) return;
|
||||
elprintf(EL_SVP, "PM0 raw w %04x @ %04x", d, GET_PPC_OFFS());
|
||||
// rPM0 = d; // ignore
|
||||
rPM0 = d;
|
||||
}
|
||||
|
||||
// 9
|
||||
|
@ -533,6 +566,7 @@ static void write_XST(u32 d)
|
|||
if (r != (u32)-1) return;
|
||||
|
||||
elprintf(EL_SVP, "XST raw w %04x @ %04x", d, GET_PPC_OFFS());
|
||||
rPM0 |= 1;
|
||||
rXST = d;
|
||||
}
|
||||
|
||||
|
@ -542,8 +576,8 @@ static u32 read_PM4(void)
|
|||
u32 d = pm_io(4, 0, 0);
|
||||
if (d == 0) {
|
||||
switch (GET_PPC_OFFS()) {
|
||||
case 0x0854: ssp->emu_status |= SSP_30FE08_WAIT; elprintf(EL_SVP, "det TIGHT loop: [30fe08]"); break;
|
||||
case 0x4f12: ssp->emu_status |= SSP_30FE06_WAIT; elprintf(EL_SVP, "det TIGHT loop: [30fe06]"); break;
|
||||
case 0x0854: ssp->emu_status |= SSP_WAIT_30FE08; elprintf(EL_SVP, "det TIGHT loop: [30fe08]"); break;
|
||||
case 0x4f12: ssp->emu_status |= SSP_WAIT_30FE06; elprintf(EL_SVP, "det TIGHT loop: [30fe06]"); break;
|
||||
}
|
||||
}
|
||||
if (d != (u32)-1) return d;
|
||||
|
@ -595,6 +629,8 @@ static void write_PMC(u32 d)
|
|||
static u32 read_AL(void)
|
||||
{
|
||||
// TODO: figure out what's up with those blind reads..
|
||||
if (*(PC-1) == 0x000f)
|
||||
elprintf(EL_SVP|EL_ANOMALY, "ssp unhandled AL blind read..");
|
||||
return rAL;
|
||||
}
|
||||
|
||||
|
@ -804,8 +840,8 @@ static void debug_dump(void)
|
|||
printf("PC: %04x (%04x) P: %08x\n", GET_PC(), GET_PC() << 1, ssp->gr[SSP_P].v);
|
||||
printf("PM0: %04x PM1: %04x PM2: %04x\n", rPM0, rPM1, rPM2);
|
||||
printf("XST: %04x PM4: %04x PMC: %08x\n", rXST, rPM4, ssp->gr[SSP_PMC].v);
|
||||
printf(" ST: %04x %c%c%c%c, GP0_0 %i, GP0_1 %i\n", rST, rST&FLAG_N?'N':'n', rST&FLAG_V?'V':'v',
|
||||
rST&FLAG_Z?'Z':'z', rST&FLAG_L?'L':'l', (rST>>5)&1, (rST>>6)&1);
|
||||
printf(" ST: %04x %c%c%c%c, GP0_0 %i, GP0_1 %i\n", rST, rST&SSP_FLAG_N?'N':'n', rST&SSP_FLAG_V?'V':'v',
|
||||
rST&SSP_FLAG_Z?'Z':'z', rST&SSP_FLAG_L?'L':'l', (rST>>5)&1, (rST>>6)&1);
|
||||
printf("STACK: %i %04x %04x %04x %04x %04x %04x\n", rSTACK, ssp->stack[0], ssp->stack[1],
|
||||
ssp->stack[2], ssp->stack[3], ssp->stack[4], ssp->stack[5]);
|
||||
printf("r0-r2: %02x %02x %02x r4-r6: %02x %02x %02x\n", rIJ[0], rIJ[1], rIJ[2], rIJ[4], rIJ[5], rIJ[6]);
|
||||
|
@ -900,9 +936,10 @@ void ssp1601_run(int cycles)
|
|||
{
|
||||
SET_PC(rPC);
|
||||
g_cycles = cycles;
|
||||
//running = 0;
|
||||
|
||||
while (g_cycles > 0 && !(ssp->emu_status&0xc000))
|
||||
//if (Pico.m.frame_count == 480) running = 0;
|
||||
|
||||
while (g_cycles > 0 && !(ssp->emu_status & SSP_WAIT_MASK))
|
||||
{
|
||||
int op;
|
||||
u32 tmpv;
|
||||
|
@ -983,11 +1020,11 @@ void ssp1601_run(int cycles)
|
|||
COND_CHECK
|
||||
if (cond) {
|
||||
switch (op & 7) {
|
||||
case 2: rA32 >>= 1; break; // shr
|
||||
case 2: rA32 = (signed int)rA32 >> 1; break; // shr (arithmetic)
|
||||
case 3: rA32 <<= 1; break; // shl
|
||||
case 6: rA32 = -(int)rA32; break; // neg
|
||||
case 7: if ((int)rA32 < 0) rA32 = -(int)rA32; break; // abs
|
||||
default: elprintf(EL_SVP, "ssp16: unhandled mod %i @ %04x", op&7, GET_PPC_OFFS());
|
||||
case 6: rA32 = -(signed int)rA32; break; // neg
|
||||
case 7: if ((int)rA32 < 0) rA32 = -(signed int)rA32; break; // abs
|
||||
default: elprintf(EL_SVP, "ssp16: FIXME unhandled mod %i @ %04x", op&7, GET_PPC_OFFS());
|
||||
}
|
||||
UPD_ACC_ZN // ?
|
||||
}
|
||||
|
@ -1012,7 +1049,7 @@ void ssp1601_run(int cycles)
|
|||
if (!(op&0x100)) elprintf(EL_SVP|EL_ANOMALY, "ssp16: FIXME: no b bit @ %04x", GET_PPC_OFFS());
|
||||
read_P(); // update P
|
||||
ssp->gr[SSP_A].v += ssp->gr[SSP_P].v; // maybe only upper word?
|
||||
// UPD_ACC_ZN // ?
|
||||
UPD_ACC_ZN // ?
|
||||
rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?)
|
||||
rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj
|
||||
break;
|
||||
|
@ -1086,7 +1123,7 @@ void ssp1601_run(int cycles)
|
|||
case 0x7c: OP_EORA(op & 0xff); break;
|
||||
|
||||
default:
|
||||
elprintf(EL_ANOMALY|EL_SVP, "ssp16: unhandled op %04x @ %04x", op, GET_PPC_OFFS());
|
||||
elprintf(EL_ANOMALY|EL_SVP, "ssp16: FIXME unhandled op %04x @ %04x", op, GET_PPC_OFFS());
|
||||
break;
|
||||
}
|
||||
g_cycles--;
|
||||
|
|
|
@ -39,8 +39,10 @@ typedef struct
|
|||
//
|
||||
#define SSP_PMC_HAVE_ADDR 0x0001 // address written to PMAC, waiting for mode
|
||||
#define SSP_PMC_SET 0x0002 // PMAC is set
|
||||
#define SSP_30FE06_WAIT 0x4000 // ssp tight loops on 30FE08 to become non-zero
|
||||
#define SSP_30FE08_WAIT 0x8000 // same for 30FE06
|
||||
#define SSP_WAIT_PM0 0x2000 // bit1 in PM0
|
||||
#define SSP_WAIT_30FE06 0x4000 // ssp tight loops on 30FE08 to become non-zero
|
||||
#define SSP_WAIT_30FE08 0x8000 // same for 30FE06
|
||||
#define SSP_WAIT_MASK 0xe000
|
||||
unsigned int emu_status;
|
||||
unsigned int pad[30];
|
||||
} ssp1601_t;
|
||||
|
|
|
@ -17,6 +17,11 @@ static void PicoSVPLine(void)
|
|||
// OSC_NTSC / 3.0 / 60.0 / 262.0 ~= 1139
|
||||
// OSC_PAL / 3.0 / 50.0 / 312.0 ~= 1137
|
||||
ssp1601_run(800);
|
||||
|
||||
// test mode
|
||||
//if (Pico.m.frame_count == 13) PicoPad[0] |= 0xff;
|
||||
// pushing start
|
||||
//if (Pico.m.frame_count & 4) PicoPad[0] |= 0x80;
|
||||
}
|
||||
|
||||
|
||||
|
@ -31,6 +36,8 @@ static int PicoSVPDma(unsigned int source, int len, unsigned short **srcp, unsig
|
|||
*limitp = (unsigned short *)(svp->dram + sizeof(svp->dram));
|
||||
return 1;
|
||||
}
|
||||
else
|
||||
elprintf(EL_VDPDMA|EL_SVP|EL_ANOMALY, "SVP FIXME unhandled DmaSlow from %06x, len=%i", source, len);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
|
||||
# settings
|
||||
#use_musashi = 1
|
||||
use_fame = 1
|
||||
use_musashi = 1
|
||||
#use_fame = 1
|
||||
#use_mz80 = 1
|
||||
|
||||
# profile = 1
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue