[pcsx_rearmed.git] / libpcsxcore / r3000a.c

/***************************************************************************
 *   Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
 ***************************************************************************/

/*
* R3000A CPU functions.
*/

#include "r3000a.h"
#include "cdrom.h"
#include "mdec.h"
#include "gte.h"
#include "psxinterpreter.h"
#include "../include/compiler_features.h"

R3000Acpu *psxCpu = NULL;
#ifdef DRC_DISABLE
psxRegisters psxRegs;
#endif

int psxInit() {
	SysPrintf(_("Running PCSX Version %s (%s).\n"), PCSX_VERSION, __DATE__);

#ifndef DRC_DISABLE
	if (Config.Cpu == CPU_INTERPRETER) {
		psxCpu = &psxInt;
	} else psxCpu = &psxRec;
#else
	Config.Cpu = CPU_INTERPRETER;
	psxCpu = &psxInt;
#endif

	Log = 0;

	if (psxMemInit() == -1) return -1;

	return psxCpu->Init();
}

void psxReset() {
	psxMemReset();

	memset(&psxRegs, 0, sizeof(psxRegs));

	psxRegs.pc = 0xbfc00000; // Start in bootstrap

	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
		psxRegs.CP0.n.SR &= ~(1u << 22); // RAM exception vector
	}

	psxCpu->ApplyConfig();
	psxCpu->Reset();

	psxHwReset();
	psxBiosInit();

	BiosLikeGPUSetup(); // a bit of a hack but whatever

	if (!Config.HLE) {
		psxExecuteBios();
		if (psxRegs.pc == 0x80030000 && !Config.SlowBoot)
			BiosBootBypass();
	}

#ifdef EMU_LOG
	EMU_LOG("*BIOS END*\n");
#endif
	Log = 0;
}

void psxShutdown() {
	psxBiosShutdown();

	psxCpu->Shutdown();

	psxMemShutdown();
}

// cp0 is passed separately for lightrec to be less messy
void psxException(u32 cause, enum R3000Abdt bdt, psxCP0Regs *cp0) {
	u32 opcode = intFakeFetch(psxRegs.pc);
	
	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)
		// so we execute it here
		psxCP2Regs *cp2 = (psxCP2Regs *)(cp0 + 1);
		psxRegs.code = opcode;
		psxCP2[opcode & 0x3f](cp2);
	}

	// Set the Cause
	cp0->n.Cause = (bdt << 30) | (cp0->n.Cause & 0x300) | cause;

	// Set the EPC & PC
	cp0->n.EPC = bdt ? psxRegs.pc - 4 : psxRegs.pc;

	if (cp0->n.SR & 0x400000)
		psxRegs.pc = 0xbfc00180;
	else
		psxRegs.pc = 0x80000080;

	// Set the SR
	cp0->n.SR = (cp0->n.SR & ~0x3f) | ((cp0->n.SR & 0x0f) << 2);
}

void psxBranchTest() {
	if ((psxRegs.cycle - psxNextsCounter) >= psxNextCounter)
		psxRcntUpdate();

	if (psxRegs.interrupt) {
		if ((psxRegs.interrupt & (1 << PSXINT_SIO))) { // sio
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SIO].sCycle) >= psxRegs.intCycle[PSXINT_SIO].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_SIO);
				sioInterrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_CDR)) { // cdr
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDR].sCycle) >= psxRegs.intCycle[PSXINT_CDR].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_CDR);
				cdrInterrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_CDREAD)) { // cdr read
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDREAD].sCycle) >= psxRegs.intCycle[PSXINT_CDREAD].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_CDREAD);
				cdrPlayReadInterrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_GPUDMA)) { // gpu dma
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_GPUDMA);
				gpuInterrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_MDECOUTDMA)) { // mdec out dma
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECOUTDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECOUTDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_MDECOUTDMA);
				mdec1Interrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_SPUDMA)) { // spu dma
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_SPUDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_SPUDMA);
				spuInterrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_MDECINDMA)) { // mdec in
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECINDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECINDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_MDECINDMA);
				mdec0Interrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_GPUOTCDMA)) { // gpu otc
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUOTCDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUOTCDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_GPUOTCDMA);
				gpuotcInterrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_CDRDMA)) { // cdrom
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRDMA].sCycle) >= psxRegs.intCycle[PSXINT_CDRDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_CDRDMA);
				cdrDmaInterrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_CDRLID)) { // cdr lid states
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRLID].sCycle) >= psxRegs.intCycle[PSXINT_CDRLID].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_CDRLID);
				cdrLidSeekInterrupt();
			}
		}
		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);
				spuUpdate();
			}
		}
	}

	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);
		}
	}
}

void psxJumpTest() {
	if (!Config.HLE && Config.PsxOut) {
		u32 call = psxRegs.GPR.n.t1 & 0xff;
		switch (psxRegs.pc & 0x1fffff) {
			case 0xa0:
#ifdef PSXBIOS_LOG
				if (call != 0x28 && call != 0xe) {
					PSXBIOS_LOG("Bios call a0: %s (%x) %x,%x,%x,%x\n", biosA0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3); }
#endif
				if (biosA0[call])
					biosA0[call]();
				break;
			case 0xb0:
#ifdef PSXBIOS_LOG
				if (call != 0x17 && call != 0xb) {
					PSXBIOS_LOG("Bios call b0: %s (%x) %x,%x,%x,%x\n", biosB0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3); }
#endif
				if (biosB0[call])
					biosB0[call]();
				break;
			case 0xc0:
#ifdef PSXBIOS_LOG
				PSXBIOS_LOG("Bios call c0: %s (%x) %x,%x,%x,%x\n", biosC0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3);
#endif
				if (biosC0[call])
					biosC0[call]();
				break;
		}
	}
}

void psxExecuteBios() {
	int i;
	for (i = 0; i < 5000000; i++) {
		psxCpu->ExecuteBlock(EXEC_CALLER_BOOT);
		if ((psxRegs.pc & 0xff800000) == 0x80000000)
			break;
	}
	if (psxRegs.pc != 0x80030000)
		SysPrintf("non-standard BIOS detected (%d, %08x)\n", i, psxRegs.pc);
}
Commit	Line	Data
ef79bbde P	1	/***************************************************************************
	2	* Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
	3	* *
	4	* This program is free software; you can redistribute it and/or modify *
	5	* it under the terms of the GNU General Public License as published by *
	6	* the Free Software Foundation; either version 2 of the License, or *
	7	* (at your option) any later version. *
	8	* *
	9	* This program is distributed in the hope that it will be useful, *
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
	12	* GNU General Public License for more details. *
	13	* *
	14	* You should have received a copy of the GNU General Public License *
	15	* along with this program; if not, write to the *
	16	* Free Software Foundation, Inc., *
	17	* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. *
	18	***************************************************************************/
	19
	20	/*
	21	* R3000A CPU functions.
	22	*/
	23
	24	#include "r3000a.h"
	25	#include "cdrom.h"
	26	#include "mdec.h"
	27	#include "gte.h"
61ad2a61	28	#include "psxinterpreter.h"
905b7c25	29	#include "../include/compiler_features.h"
ef79bbde P	30
ef79bbde P	31	R3000Acpu *psxCpu = NULL;
41e82ad4	32	#ifdef DRC_DISABLE
ef79bbde	33	psxRegisters psxRegs;
41e82ad4	34	#endif
ef79bbde P	35
ef79bbde P	36	int psxInit() {
7a8d521f	37	SysPrintf(_("Running PCSX Version %s (%s).\n"), PCSX_VERSION, __DATE__);
ef79bbde	38
41e82ad4	39	#ifndef DRC_DISABLE
ef79bbde P	40	if (Config.Cpu == CPU_INTERPRETER) {
	41	psxCpu = &psxInt;
	42	} else psxCpu = &psxRec;
	43	#else
61ad2a61	44	Config.Cpu = CPU_INTERPRETER;
ef79bbde P	45	psxCpu = &psxInt;
	46	#endif
	47
	48	Log = 0;
	49
	50	if (psxMemInit() == -1) return -1;
	51
	52	return psxCpu->Init();
	53	}
	54
	55	void psxReset() {
ef79bbde P	56	psxMemReset();
	57
	58	memset(&psxRegs, 0, sizeof(psxRegs));
	59
	60	psxRegs.pc = 0xbfc00000; // Start in bootstrap
	61
bc7c5acb	62	psxRegs.CP0.n.SR = 0x10600000; // COP0 enabled \| BEV = 1 \| TS = 1
bc7c5acb	63	psxRegs.CP0.n.PRid = 0x00000002; // PRevID = Revision ID, same as R3000A
7650b754	64	if (Config.HLE) {
	65	psxRegs.CP0.n.SR \|= 1u << 30; // COP2 enabled
	66	psxRegs.CP0.n.SR &= ~(1u << 22); // RAM exception vector
	67	}
ef79bbde	68
d5aeda23	69	psxCpu->ApplyConfig();
c24732c0	70	psxCpu->Reset();
c24732c0	71
ef79bbde P	72	psxHwReset();
	73	psxBiosInit();
	74
7b75929b	75	BiosLikeGPUSetup(); // a bit of a hack but whatever
7b75929b	76
7b75929b	77	if (!Config.HLE) {
ef79bbde	78	psxExecuteBios();
7b75929b	79	if (psxRegs.pc == 0x80030000 && !Config.SlowBoot)
	80	BiosBootBypass();
	81	}
ef79bbde P	82
	83	#ifdef EMU_LOG
	84	EMU_LOG("BIOS END\n");
	85	#endif
	86	Log = 0;
	87	}
	88
	89	void psxShutdown() {
ef79bbde P	90	psxBiosShutdown();
	91
	92	psxCpu->Shutdown();
7a8d521f	93
7a8d521f	94	psxMemShutdown();
ef79bbde P	95	}
ef79bbde P	96
6d75addf	97	// cp0 is passed separately for lightrec to be less messy
bc7c5acb	98	void psxException(u32 cause, enum R3000Abdt bdt, psxCP0Regs *cp0) {
905b7c25	99	u32 opcode = intFakeFetch(psxRegs.pc);
943a507a	100
3d1c03e7	101	if (unlikely(!Config.HLE && (opcode >> 25) == 0x25)) {
665e364a	102	// "hokuto no ken" / "Crash Bandicot 2" ...
	103	// BIOS does not allow to return to GTE instructions
	104	// (just skips it, supposedly because it's scheduled already)
62656449	105	// so we execute it here
bc7c5acb	106	psxCP2Regs cp2 = (psxCP2Regs )(cp0 + 1);
905b7c25	107	psxRegs.code = opcode;
905b7c25	108	psxCP2[opcode & 0x3f](cp2);
665e364a	109	}
665e364a	110
ef79bbde	111	// Set the Cause
bc7c5acb	112	cp0->n.Cause = (bdt << 30) \| (cp0->n.Cause & 0x300) \| cause;
ef79bbde P	113
ef79bbde P	114	// Set the EPC & PC
bc7c5acb	115	cp0->n.EPC = bdt ? psxRegs.pc - 4 : psxRegs.pc;
ef79bbde	116
bc7c5acb	117	if (cp0->n.SR & 0x400000)
ef79bbde P	118	psxRegs.pc = 0xbfc00180;
	119	else
	120	psxRegs.pc = 0x80000080;
	121
bc7c5acb	122	// Set the SR
bc7c5acb	123	cp0->n.SR = (cp0->n.SR & ~0x3f) \| ((cp0->n.SR & 0x0f) << 2);
ef79bbde P	124	}
	125
	126	void psxBranchTest() {
	127	if ((psxRegs.cycle - psxNextsCounter) >= psxNextCounter)
	128	psxRcntUpdate();
	129
	130	if (psxRegs.interrupt) {
d014a471	131	if ((psxRegs.interrupt & (1 << PSXINT_SIO))) { // sio
d28b54b1	132	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SIO].sCycle) >= psxRegs.intCycle[PSXINT_SIO].cycle) {
d28b54b1	133	psxRegs.interrupt &= ~(1 << PSXINT_SIO);
ef79bbde P	134	sioInterrupt();
	135	}
	136	}
d28b54b1	137	if (psxRegs.interrupt & (1 << PSXINT_CDR)) { // cdr
	138	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDR].sCycle) >= psxRegs.intCycle[PSXINT_CDR].cycle) {
	139	psxRegs.interrupt &= ~(1 << PSXINT_CDR);
ef79bbde P	140	cdrInterrupt();
	141	}
	142	}
d28b54b1	143	if (psxRegs.interrupt & (1 << PSXINT_CDREAD)) { // cdr read
	144	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDREAD].sCycle) >= psxRegs.intCycle[PSXINT_CDREAD].cycle) {
	145	psxRegs.interrupt &= ~(1 << PSXINT_CDREAD);
480e570b	146	cdrPlayReadInterrupt();
ef79bbde P	147	}
ef79bbde P	148	}
d28b54b1	149	if (psxRegs.interrupt & (1 << PSXINT_GPUDMA)) { // gpu dma
	150	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUDMA].cycle) {
	151	psxRegs.interrupt &= ~(1 << PSXINT_GPUDMA);
ef79bbde P	152	gpuInterrupt();
	153	}
	154	}
d28b54b1	155	if (psxRegs.interrupt & (1 << PSXINT_MDECOUTDMA)) { // mdec out dma
	156	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECOUTDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECOUTDMA].cycle) {
	157	psxRegs.interrupt &= ~(1 << PSXINT_MDECOUTDMA);
ef79bbde P	158	mdec1Interrupt();
	159	}
	160	}
d28b54b1	161	if (psxRegs.interrupt & (1 << PSXINT_SPUDMA)) { // spu dma
	162	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_SPUDMA].cycle) {
	163	psxRegs.interrupt &= ~(1 << PSXINT_SPUDMA);
ef79bbde P	164	spuInterrupt();
	165	}
	166	}
528ad661	167	if (psxRegs.interrupt & (1 << PSXINT_MDECINDMA)) { // mdec in
	168	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECINDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECINDMA].cycle) {
	169	psxRegs.interrupt &= ~(1 << PSXINT_MDECINDMA);
	170	mdec0Interrupt();
	171	}
	172	}
57a757ce	173	if (psxRegs.interrupt & (1 << PSXINT_GPUOTCDMA)) { // gpu otc
	174	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUOTCDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUOTCDMA].cycle) {
	175	psxRegs.interrupt &= ~(1 << PSXINT_GPUOTCDMA);
	176	gpuotcInterrupt();
	177	}
	178	}
9f8b032d	179	if (psxRegs.interrupt & (1 << PSXINT_CDRDMA)) { // cdrom
	180	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRDMA].sCycle) >= psxRegs.intCycle[PSXINT_CDRDMA].cycle) {
	181	psxRegs.interrupt &= ~(1 << PSXINT_CDRDMA);
	182	cdrDmaInterrupt();
	183	}
	184	}
	185	if (psxRegs.interrupt & (1 << PSXINT_CDRLID)) { // cdr lid states
	186	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRLID].sCycle) >= psxRegs.intCycle[PSXINT_CDRLID].cycle) {
	187	psxRegs.interrupt &= ~(1 << PSXINT_CDRLID);
	188	cdrLidSeekInterrupt();
	189	}
	190	}
2b30c129	191	if (psxRegs.interrupt & (1 << PSXINT_SPU_UPDATE)) { // scheduled spu update
	192	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPU_UPDATE].sCycle) >= psxRegs.intCycle[PSXINT_SPU_UPDATE].cycle) {
	193	psxRegs.interrupt &= ~(1 << PSXINT_SPU_UPDATE);
	194	spuUpdate();
	195	}
	196	}
ef79bbde P	197	}
	198
	199	if (psxHu32(0x1070) & psxHu32(0x1074)) {
bc7c5acb	200	if ((psxRegs.CP0.n.SR & 0x401) == 0x401) {
ef79bbde P	201	#ifdef PSXCPU_LOG
	202	PSXCPU_LOG("Interrupt: %x %x\n", psxHu32(0x1070), psxHu32(0x1074));
	203	#endif
	204	// SysPrintf("Interrupt (%x): %x %x\n", psxRegs.cycle, psxHu32(0x1070), psxHu32(0x1074));
6d75addf	205	psxException(0x400, 0, &psxRegs.CP0);
ef79bbde P	206	}
	207	}
	208	}
	209
	210	void psxJumpTest() {
	211	if (!Config.HLE && Config.PsxOut) {
	212	u32 call = psxRegs.GPR.n.t1 & 0xff;
	213	switch (psxRegs.pc & 0x1fffff) {
	214	case 0xa0:
	215	#ifdef PSXBIOS_LOG
	216	if (call != 0x28 && call != 0xe) {
	217	PSXBIOS_LOG("Bios call a0: %s (%x) %x,%x,%x,%x\n", biosA0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3); }
	218	#endif
	219	if (biosA0[call])
	220	biosA0[call]();
	221	break;
	222	case 0xb0:
	223	#ifdef PSXBIOS_LOG
	224	if (call != 0x17 && call != 0xb) {
	225	PSXBIOS_LOG("Bios call b0: %s (%x) %x,%x,%x,%x\n", biosB0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3); }
	226	#endif
	227	if (biosB0[call])
	228	biosB0[call]();
	229	break;
	230	case 0xc0:
	231	#ifdef PSXBIOS_LOG
	232	PSXBIOS_LOG("Bios call c0: %s (%x) %x,%x,%x,%x\n", biosC0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3);
	233	#endif
	234	if (biosC0[call])
	235	biosC0[call]();
	236	break;
	237	}
	238	}
	239	}
	240
	241	void psxExecuteBios() {
7b75929b	242	int i;
da65071f	243	for (i = 0; i < 5000000; i++) {
	244	psxCpu->ExecuteBlock(EXEC_CALLER_BOOT);
	245	if ((psxRegs.pc & 0xff800000) == 0x80000000)
	246	break;
	247	}
	248	if (psxRegs.pc != 0x80030000)
	249	SysPrintf("non-standard BIOS detected (%d, %08x)\n", i, psxRegs.pc);
ef79bbde P	250	}
ef79bbde P	251