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/* |
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* main_amiga.cpp - Startup code for AmigaOS |
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* |
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* Basilisk II (C) 1997-1999 Christian Bauer |
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* Basilisk II (C) 1997-2000 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 "debug.h" |
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// Options for libnix |
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unsigned long __stack = 0x4000; // Stack requirement |
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int __nocommandline = 1; // Disable command line parsing |
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// Constants |
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static const char ROM_FILE_NAME[] = "ROM"; |
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static const char __ver[] = "$VER: " VERSION_STRING " " __AMIGADATE__; |
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static const char __ver[] = "$VER: " VERSION_STRING " " __DATE__; |
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static const int SCRATCH_MEM_SIZE = 65536; |
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// Global variables |
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extern ExecBase *SysBase; |
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struct Library *GfxBase = NULL; |
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struct IntuitionBase *IntuitionBase = NULL; |
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struct Library *GadToolsBase = NULL; |
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struct Library *IFFParseBase = NULL; |
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struct Library *AslBase = NULL; |
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struct Library *P96Base = NULL; |
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struct Library *CyberGfxBase = NULL; |
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struct Library *TimerBase = NULL; |
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struct Library *AHIBase = NULL; |
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struct Library *DiskBase = NULL; |
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static StackSwapStruct stack_swap; |
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// Prototypes |
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static void jump_to_rom(void); |
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static void tick_func(void); |
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// Assembly functions |
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struct trap_regs; |
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extern "C" void AtomicAnd(uint32 *p, uint32 val); |
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extern "C" void ExceptionHandlerAsm(void); |
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extern "C" void IllInstrHandler(trap_regs *regs); |
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extern "C" void PrivViolHandler(trap_regs *regs); |
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extern "C" void quit_emulator(void); |
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uint16 EmulatedSR; // Emulated SR (supervisor bit and interrupt mask) |
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// Prototypes |
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static void jump_to_rom(void); |
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static void tick_func(void); |
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/* |
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* Main program |
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*/ |
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printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR); |
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printf(" %s\n", GetString(STR_ABOUT_TEXT2)); |
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// Read preferences |
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PrefsInit(); |
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// Open libraries |
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GfxBase = OpenLibrary((UBYTE *)"graphics.library", 39); |
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if (GfxBase == NULL) { |
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printf("Cannot open graphics.library V39.\n"); |
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exit(1); |
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} |
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IntuitionBase = (struct IntuitionBase *)OpenLibrary((UBYTE *)"intuition.library", 39); |
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if (IntuitionBase == NULL) { |
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printf("Cannot open intuition.library V39.\n"); |
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CloseLibrary(GfxBase); |
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exit(1); |
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} |
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DiskBase = (struct Library *)OpenResource((UBYTE *)"disk.resource"); |
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if (DiskBase == NULL) |
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QuitEmulator(); |
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ErrorAlert(GetString(STR_NO_GADTOOLS_LIB_ERR)); |
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QuitEmulator(); |
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} |
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IFFParseBase = OpenLibrary((UBYTE *)"iffparse.library", 39); |
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if (IFFParseBase == NULL) { |
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ErrorAlert(GetString(STR_NO_IFFPARSE_LIB_ERR)); |
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QuitEmulator(); |
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} |
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AslBase = OpenLibrary((UBYTE *)"asl.library", 36); |
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if (AslBase == NULL) { |
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ErrorAlert(GetString(STR_NO_ASL_LIB_ERR)); |
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QuitEmulator(); |
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} |
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// These two can fail (the respective gfx support won't be available, then) |
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P96Base = OpenLibrary((UBYTE *)"Picasso96API.library", 2); |
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CyberGfxBase = OpenLibrary((UBYTE *)"cybergraphics.library", 2); |
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// Read preferences |
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PrefsInit(); |
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// Open AHI |
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ahi_port = CreateMsgPort(); |
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const char *rom_path = PrefsFindString("rom"); |
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// Load Mac ROM |
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BPTR rom_fh = Open(rom_path ? (char *)rom_path : ROM_FILE_NAME, MODE_OLDFILE); |
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BPTR rom_fh = Open(rom_path ? (char *)rom_path : (char *)ROM_FILE_NAME, MODE_OLDFILE); |
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if (rom_fh == NULL) { |
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ErrorAlert(GetString(STR_NO_ROM_FILE_ERR)); |
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QuitEmulator(); |
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// Start 60Hz process |
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tick_proc = CreateNewProcTags( |
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NP_Entry, tick_func, |
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NP_Name, "Basilisk II 60Hz", |
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NP_Entry, (ULONG)tick_func, |
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NP_Name, (ULONG)"Basilisk II 60Hz", |
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NP_Priority, 5, |
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TAG_END |
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); |
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* Quit emulator (__saveds because it might be called from an exception) |
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*/ |
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void __saveds QuitEmulator(void) |
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// Assembly entry point |
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void __saveds quit_emulator(void) |
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{ |
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QuitEmulator(); |
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} |
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void QuitEmulator(void) |
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{ |
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// Stop 60Hz thread |
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if (tick_proc) { |
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SetSignal(0, SIGF_SINGLE); |
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tick_proc_active = false; |
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Wait(SIGF_SINGLE); |
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} |
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// Restore stack |
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if (stack_swapped) { |
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stack_swapped = false; |
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FreeSignal(IRQSig); |
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} |
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// Stop 60Hz thread |
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if (tick_proc) { |
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SetSignal(0, SIGF_SINGLE); |
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tick_proc_active = false; |
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Wait(SIGF_SINGLE); |
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} |
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// Remove trap handler |
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MainTask->tc_TrapCode = OldTrapHandler; |
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PrefsExit(); |
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// Close libraries |
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if (CyberGfxBase) |
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CloseLibrary(CyberGfxBase); |
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if (P96Base) |
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CloseLibrary(P96Base); |
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if (AslBase) |
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CloseLibrary(AslBase); |
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if (IFFParseBase) |
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CloseLibrary(IFFParseBase); |
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if (GadToolsBase) |
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CloseLibrary(GadToolsBase); |
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if (IntuitionBase) |
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CloseLibrary((struct Library *)IntuitionBase); |
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if (GfxBase) |
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CloseLibrary(GfxBase); |
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exit(0); |
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} |
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if (++tick_counter > 60) { |
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tick_counter = 0; |
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WriteMacInt32(0x20c, TimerDateTime()); |
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SetInterruptFlag(INTFLAG_1HZ); |
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TriggerInterrupt(); |
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} |
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// Trigger 60Hz interrupt |
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req.es_Title = (UBYTE *)GetString(STR_ERROR_ALERT_TITLE); |
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req.es_TextFormat = (UBYTE *)GetString(STR_GUI_ERROR_PREFIX); |
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req.es_GadgetFormat = (UBYTE *)GetString(STR_QUIT_BUTTON); |
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EasyRequest(NULL, &req, NULL, text); |
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EasyRequest(NULL, &req, NULL, (ULONG)text); |
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} |
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req.es_Title = (UBYTE *)GetString(STR_WARNING_ALERT_TITLE); |
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req.es_TextFormat = (UBYTE *)GetString(STR_GUI_WARNING_PREFIX); |
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req.es_GadgetFormat = (UBYTE *)GetString(STR_OK_BUTTON); |
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EasyRequest(NULL, &req, NULL, text); |
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EasyRequest(NULL, &req, NULL, (ULONG)text); |
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} |
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req.es_Title = (UBYTE *)GetString(STR_WARNING_ALERT_TITLE); |
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req.es_TextFormat = (UBYTE *)GetString(STR_GUI_WARNING_PREFIX); |
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req.es_GadgetFormat = (UBYTE *)str; |
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return EasyRequest(NULL, &req, NULL, text); |
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return EasyRequest(NULL, &req, NULL, (ULONG)text); |
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} |
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