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/* |
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* emul_op.cpp - 68k opcodes for ROM patches |
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* |
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* Basilisk II (C) 1997-1999 Christian Bauer |
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* Basilisk II (C) 1997-2005 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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#include "extfs.h" |
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#include "emul_op.h" |
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|
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#ifdef ENABLE_MON |
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#include "mon.h" |
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#endif |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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switch (opcode) { |
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case M68K_EMUL_BREAK: { // Breakpoint |
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printf("*** Breakpoint\n"); |
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printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n" |
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"d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n" |
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"a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n" |
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"a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n" |
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printf("d0 %08x d1 %08x d2 %08x d3 %08x\n" |
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"d4 %08x d5 %08x d6 %08x d7 %08x\n" |
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"a0 %08x a1 %08x a2 %08x a3 %08x\n" |
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"a4 %08x a5 %08x a6 %08x a7 %08x\n" |
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"sr %04x\n", |
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r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7], |
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r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7], |
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r->sr); |
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VideoQuitFullScreen(); |
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#ifdef ENABLE_MON |
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char *arg[4] = {"mon", "-m", "-r", NULL}; |
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mon(3, arg); |
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#endif |
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QuitEmulator(); |
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break; |
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} |
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D(bug("*** RESET ***\n")); |
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TimerReset(); |
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EtherReset(); |
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AudioReset(); |
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|
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// Create BootGlobs at top of memory |
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memset((void *)(RAMBaseHost + RAMSize - 4096), 0, 4096); |
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Mac_memset(RAMBaseMac + RAMSize - 4096, 0, 4096); |
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uint32 boot_globs = RAMBaseMac + RAMSize - 0x1c; |
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WriteMacInt32(boot_globs + 0x00, RAMBaseMac); // First RAM bank |
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WriteMacInt32(boot_globs + 0x04, RAMSize); |
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break; |
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|
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case M68K_EMUL_OP_FIX_BOOTSTACK: // Set boot stack to 3/4 of RAM (7.5) |
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D(bug("Fix boot stack\n")); |
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r->a[1] = RAMBaseMac + RAMSize * 3 / 4; |
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D(bug("Fix boot stack %08x\n", r->a[1])); |
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break; |
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|
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case M68K_EMUL_OP_FIX_MEMSIZE: { // Set correct logical and physical memory size |
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r.a[0] = PutScrapPatch; |
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Execute68kTrap(0xa647, &r); // SetToolTrap() |
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|
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// Install GetScrap() patch |
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if (GetScrapPatch) { |
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r.d[0] = 0xa9fd; |
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r.a[0] = GetScrapPatch; |
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Execute68kTrap(0xa647, &r); // SetToolTrap() |
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} |
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|
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// Setup fake ASC registers |
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if (ROMVersion == ROM_VERSION_32) { |
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r.d[0] = 0x1000; |
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break; |
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|
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case M68K_EMUL_OP_ETHER_READ_PACKET: |
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EtherReadPacket((uint8 **)&r->a[0], r->a[3], r->d[3], r->d[1]); |
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EtherReadPacket(r->a[0], r->a[3], r->d[3], r->d[1]); |
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break; |
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|
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case M68K_EMUL_OP_SOUNDIN_OPEN: // Sound input driver functions |
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r->d[0] = SoundInOpen(r->a[0], r->a[1]); |
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break; |
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|
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case M68K_EMUL_OP_SOUNDIN_PRIME: |
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r->d[0] = SoundInPrime(r->a[0], r->a[1]); |
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break; |
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|
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case M68K_EMUL_OP_SOUNDIN_CONTROL: |
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r->d[0] = SoundInControl(r->a[0], r->a[1]); |
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break; |
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|
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case M68K_EMUL_OP_SOUNDIN_STATUS: |
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r->d[0] = SoundInStatus(r->a[0], r->a[1]); |
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break; |
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|
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case M68K_EMUL_OP_SOUNDIN_CLOSE: |
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r->d[0] = SoundInClose(r->a[0], r->a[1]); |
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break; |
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|
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case M68K_EMUL_OP_SCSI_DISPATCH: { // SCSIDispatch() replacement |
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break; |
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} |
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|
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case M68K_EMUL_OP_MEMORY_DISPATCH: { // MemoryDispatch() replacement routine |
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int16 sel = r->d[0]; |
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D(bug("MemoryDispatch(%d)\n", sel)); |
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switch (sel) { |
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case -6: // GetLogicalRAMSize |
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r->d[0] = RAMSize; |
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break; |
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case -3: |
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r->d[0] = 0x1000; |
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break; |
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case 0: // HoldMemory |
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case 1: // UnholdMemory |
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case 2: // LockMemory |
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case 3: // UnlockMemory |
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case 4: // LockMemoryContiguous |
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case 6: // ProtectMemory |
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case 7: // UnprotectMemory |
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r->d[0] = 0; |
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break; |
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default: |
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printf("FATAL: MemoryDispatch(%d): illegal selector\n", sel); |
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r->d[0] = (uint32)-502; |
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break; |
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} |
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break; |
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} |
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|
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case M68K_EMUL_OP_IRQ: // Level 1 interrupt |
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r->d[0] = 0; |
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|
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if (InterruptFlags & INTFLAG_60HZ) { |
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ClearInterruptFlag(INTFLAG_60HZ); |
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|
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// Increment Ticks variable |
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WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1); |
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|
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if (HasMacStarted()) { |
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|
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// Mac has started, execute all 60Hz interrupt functions |
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ADBInterrupt(); |
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TimerInterrupt(); |
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VideoInterrupt(); |
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SonyInterrupt(); |
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DiskInterrupt(); |
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CDROMInterrupt(); |
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|
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// Call DoVBLTask(0) |
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if (ROMVersion == ROM_VERSION_32) { |
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r->d[0] = 1; // Flag: 68k interrupt routine executes VBLTasks etc. |
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} |
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} |
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|
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if (InterruptFlags & INTFLAG_1HZ) { |
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ClearInterruptFlag(INTFLAG_1HZ); |
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if (HasMacStarted()) { |
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SonyInterrupt(); |
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DiskInterrupt(); |
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CDROMInterrupt(); |
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} |
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} |
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|
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if (InterruptFlags & INTFLAG_SERIAL) { |
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ClearInterruptFlag(INTFLAG_SERIAL); |
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SerialInterrupt(); |
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} |
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|
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if (InterruptFlags & INTFLAG_ETHER) { |
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ClearInterruptFlag(INTFLAG_ETHER); |
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EtherInterrupt(); |
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} |
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|
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if (InterruptFlags & INTFLAG_AUDIO) { |
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ClearInterruptFlag(INTFLAG_AUDIO); |
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AudioInterrupt(); |
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} |
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|
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if (InterruptFlags & INTFLAG_ADB) { |
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ClearInterruptFlag(INTFLAG_ADB); |
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if (HasMacStarted()) |
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ADBInterrupt(); |
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} |
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|
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if (InterruptFlags & INTFLAG_NMI) { |
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ClearInterruptFlag(INTFLAG_NMI); |
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if (HasMacStarted()) |
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TriggerNMI(); |
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} |
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break; |
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|
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case M68K_EMUL_OP_PUT_SCRAP: { // PutScrap() patch |
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break; |
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} |
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case M68K_EMUL_OP_GET_SCRAP: { // GetScrap() patch |
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void **scrap_handle = (void **)Mac2HostAddr(ReadMacInt32(r->a[7] + 4)); |
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uint32 type = ReadMacInt32(r->a[7] + 8); |
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int32 length = ReadMacInt32(r->a[7] + 12); |
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GetScrap(scrap_handle, type, length); |
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break; |
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} |
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|
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case M68K_EMUL_OP_CHECKLOAD: { // vCheckLoad() patch (resource loader) |
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uint32 type = r->d[1]; |
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int16 id = ReadMacInt16(r->a[2]); |
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break; |
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#endif |
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|
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case M68K_EMUL_OP_BLOCK_MOVE: // BlockMove() replacement |
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memmove(Mac2HostAddr(r->a[1]), Mac2HostAddr(r->a[0]), r->d[0]); |
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case M68K_EMUL_OP_BLOCK_MOVE: // BlockMove() cache flushing |
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FlushCodeCache(Mac2HostAddr(r->a[0]), r->a[1]); |
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break; |
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|
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case M68K_EMUL_OP_DEBUGUTIL: |
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// printf("DebugUtil d0=%08lx a5=%08lx\n", r->d[0], r->a[5]); |
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r->d[0] = DebugUtil(r->d[0]); |
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break; |
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|
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default: |
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printf("FATAL: EMUL_OP called with bogus opcode %08x\n", opcode); |
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printf("d0 %08lx d1 %08lx d2 %08lx d3 %08lx\n" |
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"d4 %08lx d5 %08lx d6 %08lx d7 %08lx\n" |
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"a0 %08lx a1 %08lx a2 %08lx a3 %08lx\n" |
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"a4 %08lx a5 %08lx a6 %08lx a7 %08lx\n" |
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printf("d0 %08x d1 %08x d2 %08x d3 %08x\n" |
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"d4 %08x d5 %08x d6 %08x d7 %08x\n" |
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"a0 %08x a1 %08x a2 %08x a3 %08x\n" |
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"a4 %08x a5 %08x a6 %08x a7 %08x\n" |
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"sr %04x\n", |
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r->d[0], r->d[1], r->d[2], r->d[3], r->d[4], r->d[5], r->d[6], r->d[7], |
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r->a[0], r->a[1], r->a[2], r->a[3], r->a[4], r->a[5], r->a[6], r->a[7], |
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r->sr); |
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#ifdef ENABLE_MON |
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char *arg[4] = {"mon", "-m", "-r", NULL}; |
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mon(3, arg); |
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#endif |
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QuitEmulator(); |
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break; |
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} |