X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=libpcsxcore%2Fr3000a.c;h=69772d44cf4753ca9a285434b5b7f8ab81711b5e;hb=2db412ade2b09ca04da81d91b75bbf6475dbde5a;hp=21273584263ac78f5f543df32ae45b8e4879bdfa;hpb=bc7c5acb6eb1ac9adc6b4381a2c2b2baffd5aebe;p=pcsx_rearmed.git diff --git a/libpcsxcore/r3000a.c b/libpcsxcore/r3000a.c index 21273584..69772d44 100644 --- a/libpcsxcore/r3000a.c +++ b/libpcsxcore/r3000a.c @@ -53,6 +53,7 @@ int psxInit() { } void psxReset() { + boolean introBypassed = FALSE; psxMemReset(); memset(&psxRegs, 0, sizeof(psxRegs)); @@ -61,8 +62,10 @@ void psxReset() { psxRegs.CP0.n.SR = 0x10600000; // COP0 enabled | BEV = 1 | TS = 1 psxRegs.CP0.n.PRid = 0x00000002; // PRevID = Revision ID, same as R3000A - if (Config.HLE) - psxRegs.CP0.n.SR |= 1u << 30; // COP2 enabled + if (Config.HLE) { + psxRegs.CP0.n.SR |= 1u << 30; // COP2 enabled + psxRegs.CP0.n.SR &= ~(1u << 22); // RAM exception vector + } psxCpu->ApplyConfig(); psxCpu->Reset(); @@ -70,13 +73,15 @@ void psxReset() { psxHwReset(); psxBiosInit(); - BiosLikeGPUSetup(); // a bit of a hack but whatever - if (!Config.HLE) { psxExecuteBios(); - if (psxRegs.pc == 0x80030000 && !Config.SlowBoot) + if (psxRegs.pc == 0x80030000 && !Config.SlowBoot) { BiosBootBypass(); + introBypassed = TRUE; + } } + if (Config.HLE || introBypassed) + psxBiosSetupBootState(); #ifdef EMU_LOG EMU_LOG("*BIOS END*\n"); @@ -96,7 +101,7 @@ void psxShutdown() { void psxException(u32 cause, enum R3000Abdt bdt, psxCP0Regs *cp0) { u32 opcode = intFakeFetch(psxRegs.pc); - if (unlikely(!Config.HLE && ((((opcode) >> 24) & 0xfe) == 0x4a))) { + if (unlikely(!Config.HLE && (opcode >> 25) == 0x25)) { // "hokuto no ken" / "Crash Bandicot 2" ... // BIOS does not allow to return to GTE instructions // (just skips it, supposedly because it's scheduled already) @@ -107,7 +112,7 @@ void psxException(u32 cause, enum R3000Abdt bdt, psxCP0Regs *cp0) { } // Set the Cause - cp0->n.Cause = (bdt << 30) | (cp0->n.Cause & 0x300) | cause; + cp0->n.Cause = (bdt << 30) | (cp0->n.Cause & 0x700) | cause; // Set the EPC & PC cp0->n.EPC = bdt ? psxRegs.pc - 4 : psxRegs.pc; @@ -119,8 +124,6 @@ void psxException(u32 cause, enum R3000Abdt bdt, psxCP0Regs *cp0) { // Set the SR cp0->n.SR = (cp0->n.SR & ~0x3f) | ((cp0->n.SR & 0x0f) << 2); - - if (Config.HLE) psxBiosException(); } void psxBranchTest() { @@ -188,6 +191,12 @@ void psxBranchTest() { cdrLidSeekInterrupt(); } } + if (psxRegs.interrupt & (1 << PSXINT_IRQ10)) { // irq10 - controller port pin8 + if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_IRQ10].sCycle) >= psxRegs.intCycle[PSXINT_IRQ10].cycle) { + psxRegs.interrupt &= ~(1 << PSXINT_IRQ10); + irq10Interrupt(); + } + } if (psxRegs.interrupt & (1 << PSXINT_SPU_UPDATE)) { // scheduled spu update if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPU_UPDATE].sCycle) >= psxRegs.intCycle[PSXINT_SPU_UPDATE].cycle) { psxRegs.interrupt &= ~(1 << PSXINT_SPU_UPDATE); @@ -196,15 +205,11 @@ void psxBranchTest() { } } - if (psxHu32(0x1070) & psxHu32(0x1074)) { - if ((psxRegs.CP0.n.SR & 0x401) == 0x401) { -#ifdef PSXCPU_LOG - PSXCPU_LOG("Interrupt: %x %x\n", psxHu32(0x1070), psxHu32(0x1074)); -#endif -// SysPrintf("Interrupt (%x): %x %x\n", psxRegs.cycle, psxHu32(0x1070), psxHu32(0x1074)); - psxException(0x400, 0, &psxRegs.CP0); - } - } + psxRegs.CP0.n.Cause &= ~0x400; + if (psxHu32(0x1070) & psxHu32(0x1074)) + psxRegs.CP0.n.Cause |= 0x400; + if (((psxRegs.CP0.n.Cause | 1) & psxRegs.CP0.n.SR & 0x401) == 0x401) + psxException(0, 0, &psxRegs.CP0); } void psxJumpTest() { @@ -249,3 +254,45 @@ void psxExecuteBios() { SysPrintf("non-standard BIOS detected (%d, %08x)\n", i, psxRegs.pc); } +// irq10 stuff, very preliminary +static int irq10count; + +static void psxScheduleIrq10One(u32 cycles_abs) { + // schedule relative to frame start + u32 c = cycles_abs - rcnts[3].cycleStart; + assert((s32)c >= 0); + psxRegs.interrupt |= 1 << PSXINT_IRQ10; + psxRegs.intCycle[PSXINT_IRQ10].cycle = c; + psxRegs.intCycle[PSXINT_IRQ10].sCycle = rcnts[3].cycleStart; + new_dyna_set_event_abs(PSXINT_IRQ10, cycles_abs); +} + +void irq10Interrupt() { + u32 prevc = psxRegs.intCycle[PSXINT_IRQ10].sCycle + + psxRegs.intCycle[PSXINT_IRQ10].cycle; + + psxHu32ref(0x1070) |= SWAPu32(0x400); + +#if 0 + s32 framec = psxRegs.cycle - rcnts[3].cycleStart; + printf("%d:%03d irq10 #%d %3d m=%d,%d\n", frame_counter, + (s32)((float)framec / (PSXCLK / 60 / 263.0f)), + irq10count, psxRegs.cycle - prevc, + (psxRegs.CP0.n.SR & 0x401) != 0x401, !(psxHu32(0x1074) & 0x400)); +#endif + if (--irq10count > 0) { + u32 cycles_per_line = Config.PsxType + ? PSXCLK / 50 / 314 : PSXCLK / 60 / 263; + psxScheduleIrq10One(prevc + cycles_per_line); + } +} + +void psxScheduleIrq10(int irq_count, int x_cycles, int y) { + //printf("%s %d, %d, %d\n", __func__, irq_count, x_cycles, y); + u32 cycles_per_frame = Config.PsxType ? PSXCLK / 50 : PSXCLK / 60; + u32 cycles = rcnts[3].cycleStart + cycles_per_frame; + cycles += y * cycles_per_frame / (Config.PsxType ? 314 : 263); + cycles += x_cycles; + psxScheduleIrq10One(cycles); + irq10count = irq_count; +}