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Supermodel/Src/CPU/PowerPC/ppc603.c

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Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
/**
** Supermodel
** A Sega Model 3 Arcade Emulator.
Updated copyright information and added headers to all remaining files except debugger.
2011-09-14 19:08:43 +00:00
** Copyright 2011 Bart Trzynadlowski, Nik Henson
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
**
** This file is part of Supermodel.
**
** Supermodel 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 3 of the License, or (at your option)
** any later version.
**
** Supermodel 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 Supermodel. If not, see <http://www.gnu.org/licenses/>.
**/
/*
* ppc603.c
*
* PowerPC 603e functions. Included from ppc.cpp; do not compile separately.
*/
void ppc603_exception(int exception)
{
Added hooks into debugger classes
2011-06-27 23:19:22 +00:00
#ifdef SUPERMODEL_DEBUGGER
if (PPCDebug != NULL)
Changes due to updates in debugger classes.
2011-09-18 22:13:20 +00:00
PPCDebug->CPUException(exception);
Added hooks into debugger classes
2011-06-27 23:19:22 +00:00
#endif
Initial import of new Supermodel code.
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switch( exception )
{
case EXCEPTION_IRQ: /* External Interrupt */
if( ppc_get_msr() & MSR_EE ) {
UINT32 msr = ppc_get_msr();
SRR0 = ppc.npc;
SRR1 = msr & 0xff73;
msr &= ~(MSR_POW | MSR_EE | MSR_PR | MSR_FP | MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1 | MSR_IR | MSR_DR | MSR_RI);
if( msr & MSR_ILE )
msr |= MSR_LE;
else
msr &= ~MSR_LE;
ppc_set_msr(msr);
if( msr & MSR_IP )
ppc.npc = 0xfff00000 | 0x0500;
else
ppc.npc = 0x00000000 | 0x0500;
equivalent optimizations, NFC
2022-07-18 20:41:36 +00:00
//MAME has this: ppc.interrupt_pending &= ~0x1;
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
ppc_change_pc(ppc.npc);
}
break;
case EXCEPTION_DECREMENTER: /* Decrementer overflow exception */
if( ppc_get_msr() & MSR_EE ) {
UINT32 msr = ppc_get_msr();
SRR0 = ppc.npc;
SRR1 = msr & 0xff73;
msr &= ~(MSR_POW | MSR_EE | MSR_PR | MSR_FP | MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1 | MSR_IR | MSR_DR | MSR_RI);
if( msr & MSR_ILE )
msr |= MSR_LE;
else
msr &= ~MSR_LE;
ppc_set_msr(msr);
if( msr & MSR_IP )
ppc.npc = 0xfff00000 | 0x0900;
else
ppc.npc = 0x00000000 | 0x0900;
ppc.interrupt_pending &= ~0x2;
ppc_change_pc(ppc.npc);
}
break;
case EXCEPTION_TRAP: /* Program exception / Trap */
{
UINT32 msr = ppc_get_msr();
SRR0 = ppc.pc;
SRR1 = (msr & 0xff73) | 0x20000; /* 0x20000 = TRAP bit */
msr &= ~(MSR_POW | MSR_EE | MSR_PR | MSR_FP | MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1 | MSR_IR | MSR_DR | MSR_RI);
if( msr & MSR_ILE )
msr |= MSR_LE;
else
msr &= ~MSR_LE;
ppc_set_msr(msr);
if( msr & MSR_IP )
ppc.npc = 0xfff00000 | 0x0700;
else
ppc.npc = 0x00000000 | 0x0700;
ppc_change_pc(ppc.npc);
}
break;
case EXCEPTION_SYSTEM_CALL: /* System call */
{
UINT32 msr = ppc_get_msr();
SRR0 = ppc.npc;
SRR1 = (msr & 0xff73);
msr &= ~(MSR_POW | MSR_EE | MSR_PR | MSR_FP | MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1 | MSR_IR | MSR_DR | MSR_RI);
if( msr & MSR_ILE )
msr |= MSR_LE;
else
msr &= ~MSR_LE;
ppc_set_msr(msr);
if( msr & MSR_IP )
ppc.npc = 0xfff00000 | 0x0c00;
else
ppc.npc = 0x00000000 | 0x0c00;
ppc_change_pc(ppc.npc);
}
break;
case EXCEPTION_SMI:
if( ppc_get_msr() & MSR_EE ) {
UINT32 msr = ppc_get_msr();
SRR0 = ppc.npc;
SRR1 = msr & 0xff73;
msr &= ~(MSR_POW | MSR_EE | MSR_PR | MSR_FP | MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1 | MSR_IR | MSR_DR | MSR_RI);
if( msr & MSR_ILE )
msr |= MSR_LE;
else
msr &= ~MSR_LE;
ppc_set_msr(msr);
if( msr & MSR_IP )
ppc.npc = 0xfff00000 | 0x1400;
else
ppc.npc = 0x00000000 | 0x1400;
ppc.interrupt_pending &= ~0x4;
ppc_change_pc(ppc.npc);
}
break;
case EXCEPTION_DSI:
{
UINT32 msr = ppc_get_msr();
SRR0 = ppc.npc;
SRR1 = msr & 0xff73;
msr &= ~(MSR_POW | MSR_EE | MSR_PR | MSR_FP | MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1 | MSR_IR | MSR_DR | MSR_RI);
if( msr & MSR_ILE )
msr |= MSR_LE;
else
msr &= ~MSR_LE;
ppc_set_msr(msr);
if( msr & MSR_IP )
ppc.npc = 0xfff00000 | 0x0300;
else
ppc.npc = 0x00000000 | 0x0300;
ppc.interrupt_pending &= ~0x4;
ppc_change_pc(ppc.npc);
}
break;
case EXCEPTION_ISI:
{
UINT32 msr = ppc_get_msr();
SRR0 = ppc.npc;
SRR1 = msr & 0xff73;
msr &= ~(MSR_POW | MSR_EE | MSR_PR | MSR_FP | MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1 | MSR_IR | MSR_DR | MSR_RI);
if( msr & MSR_ILE )
msr |= MSR_LE;
else
msr &= ~MSR_LE;
ppc_set_msr(msr);
if( msr & MSR_IP )
ppc.npc = 0xfff00000 | 0x0400;
else
ppc.npc = 0x00000000 | 0x0400;
ppc.interrupt_pending &= ~0x4;
ppc_change_pc(ppc.npc);
}
break;
default:
ErrorLog("PowerPC triggered an unknown exception. Emulation halted until reset.");
DebugLog("PowerPC triggered an unknown exception (%d).\n", exception);
- Removed BOOL and replaced it with native C++ type, bool. - Removed TRUE and FALSE, changed to 'true' and 'false' keywords.
2011-09-08 06:34:18 +00:00
ppc.fatalError = true;
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
break;
}
}
static void ppc603_check_interrupts(void)
{
if (MSR & MSR_EE)
{
if (ppc.interrupt_pending != 0)
{
if (ppc.interrupt_pending & 0x1)
{
ppc603_exception(EXCEPTION_IRQ);
}
else if (ppc.interrupt_pending & 0x2)
{
ppc603_exception(EXCEPTION_DECREMENTER);
equivalent optimizations, NFC
2022-07-18 20:41:36 +00:00
}
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
else if (ppc.interrupt_pending & 0x4)
{
ppc603_exception(EXCEPTION_SMI);
}
}
}
}
void ppc_reset(void)
{
- Removed BOOL and replaced it with native C++ type, bool. - Removed TRUE and FALSE, changed to 'true' and 'false' keywords.
2011-09-08 06:34:18 +00:00
ppc.fatalError = false; // reset the fatal error flag
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
ppc.pc = ppc.npc = 0xfff00100;
ppc_set_msr(0x40);
ppc_change_pc(ppc.pc);
ppc.hid0 = 1;
ppc.interrupt_pending = 0;
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
ppc.tb = 0;
ppc.timer_frac = 0;
DEC = 0xffffffff;
ppc.total_cycles = 0;
ppc.cur_cycles = 0;
ppc.icount = 0;
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
}
int ppc_execute(int cycles)
{
UINT32 opcode;
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
ppc.cur_cycles = cycles;
ppc.icount = cycles;
ppc.tb_base_icount = cycles + ppc.timer_frac;
ppc.dec_base_icount = cycles + ppc.timer_frac;
// Check if decrementer exception occurs during execution (exception occurs after decrementer
// has passed through zero)
if ((UINT32)(ppc.dec_base_icount / ppc.timer_ratio) > DEC)
ppc.dec_trigger_cycle = ppc.dec_base_icount - ((1 + DEC) * ppc.timer_ratio);
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
else
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
ppc.dec_trigger_cycle = 0x7fffffff;
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
ppc_change_pc(ppc.npc);
/*{
char string1[200];
char string2[200];
opcode = BSWAP32(*ppc.op);
- Removed BOOL and replaced it with native C++ type, bool. - Removed TRUE and FALSE, changed to 'true' and 'false' keywords.
2011-09-08 06:34:18 +00:00
DisassemblePowerPC(opcode, ppc.npc, string1, string2, true);
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
printf("%08X: %s %s\n", ppc.npc, string1, string2);
}*/
ppc603_check_interrupts();
Changes due to updates in debugger classes.
2011-09-18 22:13:20 +00:00
#ifdef SUPERMODEL_DEBUGGER
if (PPCDebug != NULL)
PPCDebug->CPUActive();
#endif // SUPERMODEL_DEBUGGER
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
while( ppc.icount > 0 && !ppc.fatalError)
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
{
ppc.pc = ppc.npc;
- skichamp now works, but controls are not hooked up and seems to overload the display lists like many non-working Step 2.x games do. To bypass the drive board error, enter the test menu and exit again. It will reboot and run. - Added some notes on the cause of the "NO DAUGHTER BOARD DETECTED" error in Real3D.cpp. - Removed some debug code from texture uploader.
2011-08-02 03:33:40 +00:00
// Debug breakpoints
- NOTE: In this revision (possibly earlier), I've started to notice some intermittent geometry glitches in Spikeout and slowdown while playing certain characters. - Added multi-texture fragment shader to repo. - Added a multiTexture option (enabled by default) to use multi-texturing to decode textures. - Added some comments regarding timing to the PowerPC execution loop.
2012-02-14 03:28:52 +00:00
/*
if (ppc.pc == 0x9d40)
{
printf("%X R3=%08X R4=%08X\n", ppc.pc, REG(3), REG(4));
}
*/
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
opcode = *ppc.op++; // Supermodel byte reverses each aligned word (converting them to little endian) so they can be fetched directly
ppc.npc = ppc.pc + 4;
Added hooks into debugger classes
2011-06-27 23:19:22 +00:00
#ifdef SUPERMODEL_DEBUGGER
if (PPCDebug != NULL)
{
Changes due to updates in debugger classes.
2011-09-18 22:13:20 +00:00
while (PPCDebug->CPUExecute(ppc.pc, opcode, (PPCDebug->instrCount > 0 ? 1 : 0)))
Added hooks into debugger classes
2011-06-27 23:19:22 +00:00
opcode = *ppc.op++;
}
Changes due to updates in debugger classes.
2011-09-18 22:13:20 +00:00
#endif // SUPERMODEL_DEBUGGER
Added hooks into debugger classes
2011-06-27 23:19:22 +00:00
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
switch(opcode >> 26)
{
case 19: optable19[(opcode >> 1) & 0x3ff](opcode); break;
case 31: optable31[(opcode >> 1) & 0x3ff](opcode); break;
case 59: optable59[(opcode >> 1) & 0x3ff](opcode); break;
case 63: optable63[(opcode >> 1) & 0x3ff](opcode); break;
default: optable[opcode >> 26](opcode); break;
}
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
ppc.icount--;
- NOTE: In this revision (possibly earlier), I've started to notice some intermittent geometry glitches in Spikeout and slowdown while playing certain characters. - Added multi-texture fragment shader to repo. - Added a multiTexture option (enabled by default) to use multi-texturing to decode textures. - Added some comments regarding timing to the PowerPC execution loop.
2012-02-14 03:28:52 +00:00
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
if (ppc.icount == ppc.dec_trigger_cycle)
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
{
ppc.interrupt_pending |= 0x2;
ppc603_check_interrupts();
}
//ppc603_check_interrupts();
}
Changes due to updates in debugger classes.
2011-09-18 22:13:20 +00:00
#ifdef SUPERMODEL_DEBUGGER
if (PPCDebug != NULL)
PPCDebug->CPUInactive();
#endif // SUPERMODEL_DEBUGGER
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
// Update timebase and decrementer. Both are updated at same rate as specified by timer_ratio.
ppc.timer_frac = ((ppc.tb_base_icount - ppc.icount) % ppc.timer_ratio);
ppc.tb += ((ppc.tb_base_icount - ppc.icount) / ppc.timer_ratio);
DEC -= ((ppc.dec_base_icount - ppc.icount) / ppc.timer_ratio);
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
/*
{
char string1[200];
char string2[200];
opcode = BSWAP32(*ppc.op);
- Removed BOOL and replaced it with native C++ type, bool. - Removed TRUE and FALSE, changed to 'true' and 'false' keywords.
2011-09-08 06:34:18 +00:00
DisassemblePowerPC(opcode, ppc.npc, string1, string2, true);
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
printf("%08X: %s %s\n", ppc.npc, string1, string2);
}
*/
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
int executed = cycles - ppc.icount;
ppc.total_cycles += executed;
ppc.cur_cycles = 0;
ppc.icount = 0;
Committing various small updates that have been hanging around in my source tree for a while now: - Added 'crosshairs' command line and config option. - Added 'vsync' command line and config option (so far only tested on NVidia cards on Windows 7 - other graphics drivers, O/Ss or driver settings may simply chose to ignore this). - Added fullscreen toggle within game using Alt+Enter key combination. - Added framework for lamp outputs and 'outputs' command line and config option. So far only the lamps for driving games are hooked up in the emulator (others to be added later). - Added an initial outputs implementation for Windows that sends MAMEHooker compatible messages (-outputs=win to enable) - Fixed fps calculation in Main.cpp that was producing incorrect results and so giving the impression that frame throttling wasn't working properly when in fact it was. - Fixed palette indexed colours as the index was always off by one, causing incorrect colours in various games, eg drivers' suits and flashing Start sign in Daytona 2. - Altered caching of models so that models with palette indexed colours use the dynamic cache rather than the static one. This is so that changes in palette indexed colours appear on screen, eg the flashing Start sign on the advanced course of Daytona 2 (although currently the START message itself is not visible due to other problems with texture decoding). - Fixed small bug in TileGen.cpp which meant both palettes were being completely recomputed pretty much with every frame. This was a significant performance hit, particularly as palette recomputation is currently being done in SyncSnapshots (it should be moved out of here at some point, although for now it's no big deal). - Made sure all OpenGL objects and resources are deleted in Render2D/3D destructors, in particular the deleting of the VBO buffer in DestroyModelCache. - Made sure that GLSL uniforms are always checked to see if they are bound before using them in order to stop unecessary (but harmless) GL errors. - Altered the default texture sheet handling to use a single large GL texture holding multiple Model3 texture sheets rather than multiple GL textures as before (if required, the old behaviour can still be selected with the mulisheet fragment shader). I believe this fixes the disappearing crosshairs/corrupt GL state problem which the multisheet fragment shader seemed to be triggering somehow. - Fixed a bug in debugger which meant memory watches were not triggering properly
2012-07-15 21:04:46 +00:00
ppc.tb_base_icount = 0;
ppc.dec_base_icount = 0;
- Committing Nik's timing changes: the PowerPC's DEC and TBR now count at the correct rate and time is accurately maintained between calls to the emulator. A VBlank bit was identified in the Real3D status register space and is now timed. Unfortunately, there are still some problems and not all games are perfect, but FV2, VS2, and others are working much better or perfectly. - Added a new dump of Scud Race Plus (scudp1). Strangely, this one uses an MPC106 instead of the MPC105 used by every other Step 1.5 game...
2012-07-12 06:13:24 +00:00
return executed;
Initial import of new Supermodel code.
2011-04-24 01:14:00 +00:00
}
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