-//\r
-// Apple 2 SDL Portable Apple Emulator\r
-//\r
-// by James L. Hammons\r
-// (C) 2005 Underground Software\r
-//\r
-// Loosely based on AppleWin by Tom Charlesworth which was based on AppleWin by\r
-// Oliver Schmidt which was based on AppleWin by Michael O'Brien. :-) Parts are\r
-// also derived from ApplePC. Too bad it was closed source--it could have been\r
-// *the* premier Apple II emulator out there.\r
-//\r
-// JLH = James L. Hammons <jlhamm@acm.org>\r
-//\r
-// WHO WHEN WHAT\r
-// --- ---------- ------------------------------------------------------------\r
-// JLH 11/12/2005 Initial port to SDL\r
-// JLH 11/18/2005 Wired up graphic soft switches \r
-// JLH 12/02/2005 Setup timer subsystem for more accurate time keeping\r
-// JLH 12/12/2005 Added preliminary state saving support\r
-//\r
-\r
-// STILL TO DO:\r
-//\r
-// - Port to SDL [DONE]\r
-// - GUI goodies\r
-// - Weed out unneeded functions [DONE]\r
-// - Disk I/O [DONE]\r
-// - 128K IIe related stuff\r
-// - State loading/saving\r
-//\r
-\r
-#include "apple2.h"\r
-\r
-#include <SDL.h>\r
-#include <fstream>\r
-#include <string>\r
-#include <iomanip>\r
-#include <iostream>\r
-#include <stdio.h>\r
-#include <stdlib.h>\r
-#include <time.h>\r
-#include "log.h"\r
-#include "video.h"\r
-#include "sound.h"\r
-#include "settings.h"\r
-#include "v65c02.h"\r
-#include "applevideo.h"\r
-#include "timing.h"\r
-#include "floppy.h"\r
-#include "firmware.h"\r
-\r
-#include "gui/gui.h"\r
-#include "gui/window.h"\r
-#include "gui/draggablewindow2.h"\r
-#include "gui/textedit.h"\r
-\r
-using namespace std;\r
-\r
-// Global variables\r
-\r
-uint8 ram[0x10000], rom[0x10000]; // RAM & ROM spaces\r
-uint8 diskRom[0x100]; // Disk ROM space\r
-V65C02REGS mainCPU;\r
-uint8 appleType = APPLE_TYPE_II;\r
-\r
-// Local variables\r
-\r
-static uint8 lastKeyPressed = 0;\r
-static bool keyDown = false;\r
-\r
-static FloppyDrive floppyDrive;\r
-\r
-enum { LC_BANK_1, LC_BANK_2 };\r
-\r
-static uint8 visibleBank = LC_BANK_1;\r
-static bool readRAM = false;\r
-static bool writeRAM = false;\r
-\r
-static bool running = true; // Machine running state flag...\r
-static uint32 startTicks;\r
-\r
-static GUI * gui = NULL;\r
-\r
-// Local functions (technically, they're global...)\r
-\r
-bool LoadImg(char * filename, uint8 * ram, int size);\r
-uint8 RdMem(uint16 addr);\r
-void WrMem(uint16 addr, uint8 b);\r
-static void SaveApple2State(const char * filename);\r
-static bool LoadApple2State(const char * filename);\r
-\r
-// Local timer callback functions\r
-\r
-static void FrameCallback(void);\r
-static void BlinkTimer(void);\r
-\r
-// Test GUI function\r
-\r
-Element * TestWindow(void)\r
-{\r
- Element * win = new DraggableWindow2(10, 10, 128, 128);\r
-// ((DraggableWindow *)win)->AddElement(new TextEdit(4, 16, 92, 0, "u2prog.dsk", win));\r
-\r
- return win;\r
-}\r
-\r
-Element * QuitEmulator(void)\r
-{\r
- gui->Stop();\r
- running = false;\r
-\r
- return NULL;\r
-}\r
-\r
-/*\r
- Small Apple II memory map:\r
-\r
-$C010 - Clear bit 7 of keyboard data ($C000)\r
-$C030 - Toggle speaker diaphragm\r
-$C051 - Display text\r
-$C054 - Select page 1\r
-$C056 - Select lo-res\r
-$C058 - Set annuciator-0 output to 0\r
-$C05A - Set annuciator-0 output to 0\r
-$C05D - Set annuciator-0 output to 1\r
-$C05F - Set annuciator-0 output to 1\r
-$C0E0 - Disk control stepper ($C0E0-7)\r
-$C0E9 - Disk control motor (on)\r
-$C0EA - Disk enable (drive 1)\r
-$C0EC - Disk R/W\r
-$C0EE - Disk set read mode\r
-*/\r
-\r
-//\r
-// V65C02 read/write memory functions\r
-//\r
-\r
-uint8 RdMem(uint16 addr)\r
-{\r
- uint8 b;\r
-\r
-#if 0\r
-if (addr >= 0xC000 && addr <= 0xC0FF)\r
- WriteLog("\n*** Read at I/O address %04X\n", addr);\r
-#endif\r
-#if 0\r
-if (addr >= 0xC080 && addr <= 0xC08F)\r
- WriteLog("\n*** Read at I/O address %04X\n", addr);\r
-#endif\r
-\r
- if ((addr & 0xFFF0) == 0xC000)\r
- {\r
- return lastKeyPressed | (keyDown ? 0x80 : 0x00);\r
- }\r
- else if ((addr & 0xFFF0) == 0xC010)\r
- {\r
-//This is bogus: keyDown is set to false, so return val NEVER is set...\r
-//Fixed...\r
-//Also, this is IIe/IIc only...!\r
- uint8 retVal = lastKeyPressed | (keyDown ? 0x80 : 0x00);\r
- keyDown = false;\r
- return retVal;\r
- }\r
- else if ((addr & 0xFFF0) == 0xC030)\r
- {\r
- ToggleSpeaker(GetCurrentV65C02Clock());\r
-//should it return something else here???\r
- return 0x00;\r
- }\r
- else if (addr == 0xC050)\r
- {\r
- textMode = false;\r
- }\r
- else if (addr == 0xC051)\r
- {\r
- textMode = true;\r
- }\r
- else if (addr == 0xC052)\r
- {\r
- mixedMode = false;\r
- }\r
- else if (addr == 0xC053)\r
- {\r
- mixedMode = true;\r
- }\r
- else if (addr == 0xC054)\r
- {\r
- displayPage2 = false;\r
- }\r
- else if (addr == 0xC055)\r
- {\r
- displayPage2 = true;\r
- }\r
- else if (addr == 0xC056)\r
- {\r
- hiRes = false;\r
- }\r
- else if (addr == 0xC057)\r
- {\r
- hiRes = true;\r
- }\r
-\r
-//Note that this is a kludge: The $D000-$DFFF 4K space is shared (since $C000-$CFFF is\r
-//memory mapped) between TWO banks, and that that $E000-$FFFF RAM space is a single bank.\r
-//[SHOULD BE FIXED NOW]\r
-//OK! This switch selects bank 2 of the 4K bank at $D000-$DFFF. One access makes it\r
-//visible, two makes it R/W.\r
-\r
- else if ((addr & 0xFFFB) == 0xC080)\r
- {\r
-//$C080 49280 OECG R Read RAM bank 2; no write\r
- visibleBank = LC_BANK_2;\r
- readRAM = true;\r
- writeRAM = false;\r
- }\r
- else if ((addr & 0xFFFB) == 0xC081)\r
- {\r
-//$C081 49281 ROMIN OECG RR Read ROM; write RAM bank 2\r
- visibleBank = LC_BANK_2;\r
- readRAM = false;\r
- writeRAM = true;\r
- }\r
- else if ((addr & 0xFFFB) == 0xC082)\r
- {\r
-//$C082 49282 OECG R Read ROM; no write\r
- visibleBank = LC_BANK_2;\r
- readRAM = false;\r
- writeRAM = false;\r
- }\r
- else if ((addr & 0xFFFB) == 0xC083)\r
- {\r
-//$C083 49283 LCBANK2 OECG RR Read/write RAM bank 2\r
- visibleBank = LC_BANK_2;\r
- readRAM = true;\r
- writeRAM = true;\r
- }\r
- else if ((addr & 0xFFFB) == 0xC088)\r
- {\r
-//$C088 49288 OECG R Read RAM bank 1; no write\r
- visibleBank = LC_BANK_1;\r
- readRAM = true;\r
- writeRAM = false;\r
- }\r
- else if ((addr & 0xFFFB) == 0xC089)\r
- {\r
-//$C089 49289 OECG RR Read ROM; write RAM bank 1\r
- visibleBank = LC_BANK_1;\r
- readRAM = false;\r
- writeRAM = true;\r
- }\r
- else if ((addr & 0xFFFB) == 0xC08A)\r
- {\r
-//$C08A 49290 OECG R Read ROM; no write\r
- visibleBank = LC_BANK_1;\r
- readRAM = false;\r
- writeRAM = false;\r
- }\r
- else if ((addr & 0xFFFB) == 0xC08B)\r
- {\r
-//$C08B 49291 OECG RR Read/write RAM bank 1\r
- visibleBank = LC_BANK_1;\r
- readRAM = true;\r
- writeRAM = true;\r
- }\r
- else if ((addr & 0xFFF8) == 0xC0E0)\r
- {\r
- floppyDrive.ControlStepper(addr & 0x07);\r
- }\r
- else if ((addr & 0xFFFE) == 0xC0E8)\r
- {\r
- floppyDrive.ControlMotor(addr & 0x01);\r
- }\r
- else if ((addr & 0xFFFE) == 0xC0EA)\r
- {\r
- floppyDrive.DriveEnable(addr & 0x01);\r
- }\r
- else if (addr == 0xC0EC)\r
- {\r
- return floppyDrive.ReadWrite();\r
- }\r
- else if (addr == 0xC0ED)\r
- {\r
- return floppyDrive.GetLatchValue();\r
- }\r
- else if (addr == 0xC0EE)\r
- {\r
- floppyDrive.SetReadMode();\r
- }\r
- else if (addr == 0xC0EF)\r
- {\r
- floppyDrive.SetWriteMode();\r
- }\r
-\r
-//This sux...\r
- if (addr >= 0xC100 && addr <= 0xCFFF) // The $C000-$CFFF block is *never* RAM\r
- b = rom[addr];\r
- else if (addr >= 0xD000)\r
- {\r
- if (readRAM)\r
- {\r
- if (addr <= 0xDFFF && visibleBank == LC_BANK_1)\r
- b = ram[addr - 0x1000];\r
- else\r
- b = ram[addr];\r
- }\r
- else\r
- b = rom[addr];\r
- }\r
- else\r
- b = ram[addr];\r
-\r
- return b;\r
-}\r
-\r
-/*\r
-A-9 (Mockingboard)\r
-APPENDIX F Assembly Language Program Listings\r
-\r
- 1 *PRIMARY ROUTINES\r
- 2 *FOR SLOT 4\r
- 3 *\r
- 4 ORG $9000\r
- 5 * ;ADDRESSES\r
- FOR FIRST\r
- 6522\r
- 6 ORB EQU $C400 ;PORT B\r
- 7 ORA EQU $C401 ;PORT A\r
- 8 DDRB EQU $C402 ;DATA DIRECTION\r
- REGISTER (A)\r
- 9 DDRA EQU $C403 ;DATA DIRECTION\r
- REGISTER (B)\r
- 10 * ;ADDRESSES\r
- FOR SECOND\r
- 6522\r
- 11 ORB2 EQU $C480 ;PORT B\r
- 12 ORA2 EQU $C481 ;PORT A\r
- 13 DDRB2 EQU $C482 ;DATA DIRECTION\r
- REGISTER (B)\r
- 14 DDRA2 EQU $C483 ;DATA DIRECTION\r
- REGISTER (A)\r
-*/\r
-void WrMem(uint16 addr, uint8 b)\r
-{\r
-//temp...\r
-//extern V6809REGS regs;\r
-//if (addr >= 0xC800 && addr <= 0xCBFE)\r
-//if (addr == 0xC80F || addr == 0xC80D)\r
-// WriteLog("WrMem: Writing address %04X with %02X [PC=%04X, $CB00=%02X]\n", addr, b, regs.pc, gram[0xCB00]);//*/\r
-\r
-#if 0\r
-if (addr >= 0xC000 && addr <= 0xC0FF)\r
- WriteLog("\n*** Write at I/O address %04X\n", addr);\r
-#endif\r
-/*\r
-Check the BIKO version on Asimov to see if it's been cracked or not...\r
-\r
-7F3D: 29 07 AND #$07 [PC=7F3F, SP=01EA, CC=---B-I--, A=01, X=4B, Y=00]\r
-7F3F: C9 06 CMP #$06 [PC=7F41, SP=01EA, CC=N--B-I--, A=01, X=4B, Y=00]\r
-7F41: 90 03 BCC $7F46 [PC=7F46, SP=01EA, CC=N--B-I--, A=01, X=4B, Y=00]\r
-[7F43: 4C 83 7E JMP $7E83] <- Skipped over... (Prints "THANK YOU VERY MUCH!")\r
-7F46: AA TAX [PC=7F47, SP=01EA, CC=---B-I--, A=01, X=01, Y=00]\r
-\r
-; INX here *ensures* 1 - 6!!! BUG!!!\r
-; Or is it? Could this be part of a braindead copy protection scheme? It's\r
-; awfully close to NOP ($EA)...\r
-; Nothing else touches it once it's been written... Hmm...\r
-\r
-7F47: E8 INX [PC=7F48, SP=01EA, CC=---B-I--, A=01, X=02, Y=00]\r
-7F48: F8 SED [PC=7F49, SP=01EA, CC=---BDI--, A=01, X=02, Y=00]\r
-7F49: 18 CLC [PC=7F4A, SP=01EA, CC=---BDI--, A=01, X=02, Y=00]\r
-7F4A: BD 15 4E LDA $4E15,X [PC=7F4D, SP=01EA, CC=---BDI--, A=15, X=02, Y=00]\r
-\r
-; 4E13: 03 00\r
-; 4E15: 25 25 15 15 10 20\r
-; 4E1B: 03 41 99 99 01 00 12\r
-; 4E22: 99 70\r
-\r
-7F4D: 65 FC ADC $FC [PC=7F4F, SP=01EA, CC=---BDI--, A=16, X=02, Y=00]\r
-7F4F: 65 FC ADC $FC [PC=7F51, SP=01EA, CC=---BDI--, A=17, X=02, Y=00]\r
-7F51: 65 FC ADC $FC [PC=7F53, SP=01EA, CC=---BDI--, A=18, X=02, Y=00]\r
-7F53: 65 FC ADC $FC [PC=7F55, SP=01EA, CC=---BDI--, A=19, X=02, Y=00]\r
-\r
-; NO checking is done on the raised stat! Aarrrgggghhhhh!\r
-\r
-7F55: 9D 15 4E STA $4E15,X [PC=7F58, SP=01EA, CC=---BDI--, A=19, X=02, Y=00]\r
-7F58: D8 CLD [PC=7F59, SP=01EA, CC=---B-I--, A=19, X=02, Y=00]\r
-\r
-; Print "ALAKAZAM!" and so on...\r
-\r
-7F59: 20 2C 40 JSR $402C [PC=402C, SP=01E8, CC=---B-I--, A=19, X=02, Y=00]\r
-*/\r
-#if 0\r
-if (addr == 0x7F47)\r
- WriteLog("\n*** Byte %02X written at address %04X\n", b, addr);\r
-#endif\r
-/*\r
-CLR80STORE=$C000 ;80STORE Off- disable 80-column memory mapping (Write)\r
-SET80STORE=$C001 ;80STORE On- enable 80-column memory mapping (WR-only)\r
-\r
-CLRAUXRD = $C002 ;read from main 48K (WR-only)\r
-SETAUXRD = $C003 ;read from aux/alt 48K (WR-only)\r
-\r
-CLRAUXWR = $C004 ;write to main 48K (WR-only)\r
-SETAUXWR = $C005 ;write to aux/alt 48K (WR-only)\r
-\r
-CLRCXROM = $C006 ;use ROM on cards (WR-only)\r
-SETCXROM = $C007 ;use internal ROM (WR-only)\r
-\r
-CLRAUXZP = $C008 ;use main zero page, stack, & LC (WR-only)\r
-SETAUXZP = $C009 ;use alt zero page, stack, & LC (WR-only)\r
-\r
-CLRC3ROM = $C00A ;use internal Slot 3 ROM (WR-only)\r
-SETC3ROM = $C00B ;use external Slot 3 ROM (WR-only)\r
-\r
-CLR80VID = $C00C ;disable 80-column display mode (WR-only)\r
-SET80VID = $C00D ;enable 80-column display mode (WR-only)\r
-\r
-CLRALTCH = $C00E ;use main char set- norm LC, Flash UC (WR-only)\r
-SETALTCH = $C00F ;use alt char set- norm inverse, LC; no Flash (WR-only)\r
-*/\r
- if (addr == 0xC00E)\r
- {\r
- alternateCharset = false;\r
- }\r
- else if (addr == 0xC00F)\r
- {\r
- alternateCharset = true;\r
- }\r
- else if ((addr & 0xFFF0) == 0xC010) // Keyboard strobe\r
- {\r
- keyDown = false;\r
- }\r
- else if (addr == 0xC050)\r
- {\r
- textMode = false;\r
- }\r
- else if (addr == 0xC051)\r
- {\r
- textMode = true;\r
- }\r
- else if (addr == 0xC052)\r
- {\r
- mixedMode = false;\r
- }\r
- else if (addr == 0xC053)\r
- {\r
- mixedMode = true;\r
- }\r
- else if (addr == 0xC054)\r
- {\r
- displayPage2 = false;\r
- }\r
- else if (addr == 0xC055)\r
- {\r
- displayPage2 = true;\r
- }\r
- else if (addr == 0xC056)\r
- {\r
- hiRes = false;\r
- }\r
- else if (addr == 0xC057)\r
- {\r
- hiRes = true;\r
- }\r
- else if ((addr & 0xFFF8) == 0xC0E0)\r
- {\r
- floppyDrive.ControlStepper(addr & 0x07);\r
- }\r
- else if ((addr & 0xFFFE) == 0xC0E8)\r
- {\r
- floppyDrive.ControlMotor(addr & 0x01);\r
- }\r
- else if ((addr & 0xFFFE) == 0xC0EA)\r
- {\r
- floppyDrive.DriveEnable(addr & 0x01);\r
- }\r
- else if (addr == 0xC0EC)\r
- {\r
-//change this to Write()? (and the other to Read()?) Dunno. Seems to work OK, but still...\r
- floppyDrive.ReadWrite();\r
- }\r
- else if (addr == 0xC0ED)\r
- {\r
- floppyDrive.SetLatchValue(b);\r
- }\r
- else if (addr == 0xC0EE)\r
- {\r
- floppyDrive.SetReadMode();\r
- }\r
- else if (addr == 0xC0EF)\r
- {\r
- floppyDrive.SetWriteMode();\r
- }\r
-//Still need to add missing I/O switches here...\r
-\r
- if (addr >= 0xD000)\r
- {\r
- if (writeRAM)\r
- {\r
- if (addr <= 0xDFFF && visibleBank == LC_BANK_1)\r
- ram[addr - 0x1000] = b;\r
- else\r
- ram[addr] = b;\r
- }\r
-\r
- return;\r
- }\r
-\r
- ram[addr] = b;\r
-}\r
-\r
-//\r
-// Load a file into RAM/ROM image space\r
-//\r
-bool LoadImg(char * filename, uint8 * ram, int size)\r
-{\r
- FILE * fp = fopen(filename, "rb");\r
-\r
- if (fp == NULL)\r
- return false;\r
-\r
- fread(ram, 1, size, fp);\r
- fclose(fp);\r
-\r
- return true;\r
-}\r
-\r
-static void SaveApple2State(const char * filename)\r
-{\r
-}\r
-\r
-static bool LoadApple2State(const char * filename)\r
-{\r
- return false;\r
-}\r
-\r
-//\r
-// Main loop\r
-//\r
-int main(int /*argc*/, char * /*argv*/[])\r
-{\r
- InitLog("./apple2.log");\r
- LoadSettings();\r
- srand(time(NULL)); // Initialize RNG\r
-\r
- // Zero out memory\r
-//Need to bankify this stuff for the IIe emulation...\r
- memset(ram, 0, 0x10000);\r
- memset(rom, 0, 0x10000);\r
-\r
- // Set up V65C02 execution context\r
- memset(&mainCPU, 0, sizeof(V65C02REGS));\r
- mainCPU.RdMem = RdMem;\r
- mainCPU.WrMem = WrMem;\r
- mainCPU.cpuFlags |= V65C02_ASSERT_LINE_RESET;\r
-\r
- if (!LoadImg(settings.BIOSPath, rom + 0xD000, 0x3000))\r
- {\r
- WriteLog("Could not open file '%s'!\n", settings.BIOSPath);\r
- return -1;\r
- }\r
-\r
-//This is now included...\r
-/* if (!LoadImg(settings.diskPath, diskRom, 0x100))\r
- {\r
- WriteLog("Could not open file '%s'!\nDisk II will be unavailable!\n", settings.diskPath);\r
-// return -1;\r
- }//*/\r
-\r
-//Load up disk image from config file (for now)...\r
- floppyDrive.LoadImage(settings.diskImagePath1, 0);\r
- floppyDrive.LoadImage(settings.diskImagePath2, 1);\r
-// floppyDrive.LoadImage("./disks/temp.nib", 1); // Load temp .nib file into second drive...\r
-\r
-//Kill the DOS ROM in slot 6 for now...\r
-//not\r
- memcpy(rom + 0xC600, diskROM, 0x100);\r
-\r
- WriteLog("About to initialize video...\n");\r
- if (!InitVideo())\r
- {\r
- cout << "Aborting!" << endl;\r
- return -1;\r
- }\r
-\r
- // Have to do this *after* video init but *before* sound init...!\r
-//Shouldn't be necessary since we're not doing emulation in the ISR...\r
- if (settings.autoStateSaving)\r
- {\r
- // Load last state from file...\r
- if (!LoadApple2State(settings.autoStatePath))\r
- WriteLog("Unable to use Apple2 state file \"%s\"!\n", settings.autoStatePath);\r
- }\r
-\r
-\r
-#if 0\r
-// State loading!\r
-if (!LoadImg("./BT1_6502_RAM_SPACE.bin", ram, 0x10000))\r
-{\r
- cout << "Couldn't load state file!" << endl;\r
- cout << "Aborting!!" << endl;\r
- return -1;\r
-}\r
-\r
-//A P Y X S PC\r
-//-- -- -- -- ----- -----\r
-//00 75 3B 53 FD 01 41 44\r
-\r
-mainCPU.cpuFlags = 0;\r
-mainCPU.a = 0x00;\r
-mainCPU.x = 0x53;\r
-mainCPU.y = 0x3B;\r
-mainCPU.cc = 0x75;\r
-mainCPU.sp = 0xFD;\r
-mainCPU.pc = 0x4441;\r
-\r
-textMode = false;\r
-mixedMode = false;\r
-displayPage2 = false;\r
-hiRes = true;\r
-\r
-//kludge...\r
-readHiRam = true;\r
-//dumpDis=true;\r
-//kludge II...\r
-memcpy(ram + 0xD000, ram + 0xC000, 0x1000);\r
-#endif\r
-\r
- WriteLog("About to initialize audio...\n");\r
- SoundInit();\r
- SDL_EnableUNICODE(1); // Needed to do key translation shit\r
-\r
- gui = new GUI(surface); // Set up the GUI system object...\r
- gui->AddMenuTitle("Apple2");\r
- gui->AddMenuItem("Test!", TestWindow/*, hotkey*/);\r
- gui->AddMenuItem("");\r
- gui->AddMenuItem("Quit", QuitEmulator, SDLK_q);\r
- gui->CommitItemsToMenu();\r
-\r
- SetupBlurTable(); // Set up the color TV emulation blur table\r
- running = true; // Set running status...\r
-\r
- InitializeEventList(); // Clear the event list before we use it...\r
- SetCallbackTime(FrameCallback, 16666.66666667); // Set frame to fire at 1/60 s interval\r
- SetCallbackTime(BlinkTimer, 250000); // Set up blinking at 1/4 s intervals\r
- startTicks = SDL_GetTicks();\r
-\r
- WriteLog("Entering main loop...\n");\r
- while (running)\r
- {\r
- double timeToNextEvent = GetTimeToNextEvent();\r
- Execute65C02(&mainCPU, USEC_TO_M6502_CYCLES(timeToNextEvent));\r
-//We MUST remove a frame's worth of time in order for the CPU to function... !!! FIX !!!\r
-//(Fix so that this is not a requirement!)\r
- mainCPU.clock -= USEC_TO_M6502_CYCLES(timeToNextEvent);\r
- HandleNextEvent();\r
- }\r
-\r
- if (settings.autoStateSaving)\r
- {\r
- // Save state here...\r
- SaveApple2State(settings.autoStatePath);\r
- }\r
-floppyDrive.SaveImage();\r
-\r
- SoundDone();\r
- VideoDone();\r
- SaveSettings();\r
- LogDone();\r
-\r
- return 0;\r
-}\r
-\r
-/*\r
-Apple II keycodes\r
------------------\r
-\r
-Key Aln CTL SHF BTH\r
------------------------\r
-space $A0 $A0 $A0 $A0 No xlation\r
-RETURN $8D $8D $8D $8D No xlation\r
-0 $B0 $B0 $B0 $B0 Need to screen shift+0 (?)\r
-1! $B1 $B1 $A1 $A1 No xlation\r
-2" $B2 $B2 $A2 $A2 No xlation\r
-3# $B3 $B3 $A3 $A3 No xlation\r
-4$ $B4 $B4 $A4 $A4 No xlation\r
-5% $B5 $B5 $A5 $A5 No xlation\r
-6& $B6 $B6 $A6 $A6 No xlation\r
-7' $B7 $B7 $A7 $A7 No xlation\r
-8( $B8 $B8 $A8 $A8 No xlation\r
-9) $B9 $B9 $A9 $A9 No xlation\r
-:* $BA $BA $AA $AA No xlation\r
-;+ $BB $BB $AB $AB No xlation\r
-,< $AC $AC $BC $BC No xlation\r
--= $AD $AD $BD $BD No xlation\r
-.> $AE $AE $BE $BE No xlation\r
-/? $AF $AF $BF $BF No xlation\r
-A $C1 $81 $C1 $81\r
-B $C2 $82 $C2 $82\r
-C $C3 $83 $C3 $83\r
-D $C4 $84 $C4 $84\r
-E $C5 $85 $C5 $85\r
-F $C6 $86 $C6 $86\r
-G $C7 $87 $C7 $87\r
-H $C8 $88 $C8 $88\r
-I $C9 $89 $C9 $89\r
-J $CA $8A $CA $8A\r
-K $CB $8B $CB $8B\r
-L $CC $8C $CC $8C\r
-M $CD $8D $DD $9D -> ODD\r
-N^ $CE $8E $DE $9E -> ODD\r
-O $CF $8F $CF $8F\r
-P@ $D0 $90 $C0 $80 Need to xlate CTL+SHFT+P & SHFT+P (?)\r
-Q $D1 $91 $D1 $91\r
-R $D2 $92 $D2 $92\r
-S $D3 $93 $D3 $93\r
-T $D4 $94 $D4 $94\r
-U $D5 $95 $D5 $95\r
-V $D6 $96 $D6 $96\r
-W $D7 $97 $D7 $97\r
-X $D8 $98 $D8 $98\r
-Y $D9 $99 $D9 $99\r
-Z $DA $9A $DA $9A\r
-<- $88 $88 $88 $88\r
--> $95 $95 $95 $95\r
-ESC $9B $9B $9B $9B No xlation\r
-\r
-*/\r
-static void FrameCallback(void)\r
-{\r
- SDL_Event event;\r
-\r
- while (SDL_PollEvent(&event))\r
- {\r
- switch (event.type)\r
- {\r
- case SDL_KEYDOWN:\r
- if (event.key.keysym.unicode != 0)\r
- {\r
-//Need to do some key translation here, and screen out non-apple keys as well...\r
- if (event.key.keysym.sym == SDLK_TAB) // Prelim key screening...\r
- break;\r
-\r
- lastKeyPressed = event.key.keysym.unicode;\r
- keyDown = true;\r
- //kludge: should have a caps lock thingy here...\r
- //or all uppercase for ][+...\r
- if (lastKeyPressed >= 'a' && lastKeyPressed <='z')\r
- lastKeyPressed &= 0xDF; // Convert to upper case...\r
- }\r
-\r
- // CTRL+RESET key emulation (mapped to CTRL+`)\r
-// This doesn't work...\r
-// if (event.key.keysym.sym == SDLK_BREAK && (event.key.keysym.mod & KMOD_CTRL))\r
-// if (event.key.keysym.sym == SDLK_PAUSE && (event.key.keysym.mod & KMOD_CTRL))\r
- if (event.key.keysym.sym == SDLK_BACKQUOTE && (event.key.keysym.mod & KMOD_CTRL))\r
-//NOTE that this shouldn't take place until the key is lifted... !!! FIX !!!\r
-//ALSO it seems to leave the machine in an inconsistent state vis-a-vis the language card...\r
- mainCPU.cpuFlags |= V65C02_ASSERT_LINE_RESET;\r
-\r
- if (event.key.keysym.sym == SDLK_RIGHT)\r
- lastKeyPressed = 0x15, keyDown = true;\r
- else if (event.key.keysym.sym == SDLK_LEFT)\r
- lastKeyPressed = 0x08, keyDown = true;\r
-\r
- // Use ALT+Q to exit, as well as the usual window decoration method\r
- if (event.key.keysym.sym == SDLK_q && (event.key.keysym.mod & KMOD_ALT))\r
- running = false;\r
-\r
- if (event.key.keysym.sym == SDLK_F12)\r
- dumpDis = !dumpDis; // Toggle the disassembly process\r
- else if (event.key.keysym.sym == SDLK_F11)\r
- floppyDrive.LoadImage("./disks/bt1_char.dsk");//Kludge to load char disk...\r
-else if (event.key.keysym.sym == SDLK_F9)\r
-{\r
- floppyDrive.CreateBlankImage();\r
-// SpawnMessage("Image cleared...");\r
-}//*/\r
-else if (event.key.keysym.sym == SDLK_F10)\r
-{\r
- floppyDrive.SwapImages();\r
-// SpawnMessage("Image swapped...");\r
-}//*/\r
-\r
- if (event.key.keysym.sym == SDLK_F2)// Toggle the palette\r
- TogglePalette();\r
- else if (event.key.keysym.sym == SDLK_F3)// Cycle through screen types\r
- CycleScreenTypes();\r
-\r
-// if (event.key.keysym.sym == SDLK_F5) // Temp GUI launch key\r
- if (event.key.keysym.sym == SDLK_F1) // GUI launch key\r
-//NOTE: Should parse the output to determine whether or not the user requested\r
-// to quit completely... !!! FIX !!!\r
- gui->Run();\r
-\r
- break;\r
- case SDL_QUIT:\r
- running = false;\r
- }\r
- }\r
-\r
- HandleSoundAtFrameEdge(); // Sound stuff... (ick)\r
- RenderVideoFrame();\r
- SetCallbackTime(FrameCallback, 16666.66666667);\r
-\r
- while (SDL_GetTicks() - startTicks < 16); // Wait for next frame...\r
- startTicks = SDL_GetTicks();\r
-}\r
-\r
-static void BlinkTimer(void)\r
-{\r
- flash = !flash;\r
- SetCallbackTime(BlinkTimer, 250000); // Set up blinking at 1/4 sec intervals\r
-}\r
+//
+// Apple 2 SDL Portable Apple Emulator
+//
+// by James L. Hammons
+// (C) 2005 Underground Software
+//
+// Loosely based on AppleWin by Tom Charlesworth which was based on AppleWin by
+// Oliver Schmidt which was based on AppleWin by Michael O'Brien. :-) Parts are
+// also derived from ApplePC. Too bad it was closed source--it could have been
+// *the* premier Apple II emulator out there.
+//
+// JLH = James L. Hammons <jlhamm@acm.org>
+//
+// WHO WHEN WHAT
+// --- ---------- ------------------------------------------------------------
+// JLH 11/12/2005 Initial port to SDL
+// JLH 11/18/2005 Wired up graphic soft switches
+// JLH 12/02/2005 Setup timer subsystem for more accurate time keeping
+// JLH 12/12/2005 Added preliminary state saving support
+//
+
+// STILL TO DO:
+//
+// - Port to SDL [DONE]
+// - GUI goodies
+// - Weed out unneeded functions [DONE]
+// - Disk I/O [DONE]
+// - 128K IIe related stuff
+// - State loading/saving
+//
+
+#include "apple2.h"
+
+#include <SDL.h>
+#include <fstream>
+#include <string>
+#include <iomanip>
+#include <iostream>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include "log.h"
+#include "video.h"
+#include "sound.h"
+#include "settings.h"
+#include "v65c02.h"
+#include "applevideo.h"
+#include "timing.h"
+#include "floppy.h"
+#include "firmware.h"
+
+#include "gui/gui.h"
+#include "gui/window.h"
+#include "gui/draggablewindow2.h"
+#include "gui/textedit.h"
+
+using namespace std;
+
+// Global variables
+
+uint8 ram[0x10000], rom[0x10000]; // RAM & ROM spaces
+uint8 diskRom[0x100]; // Disk ROM space
+V65C02REGS mainCPU;
+uint8 appleType = APPLE_TYPE_II;
+
+// Local variables
+
+static uint8 lastKeyPressed = 0;
+static bool keyDown = false;
+
+static FloppyDrive floppyDrive;
+
+enum { LC_BANK_1, LC_BANK_2 };
+
+static uint8 visibleBank = LC_BANK_1;
+static bool readRAM = false;
+static bool writeRAM = false;
+
+static bool running = true; // Machine running state flag...
+static uint32 startTicks;
+
+static GUI * gui = NULL;
+
+// Local functions (technically, they're global...)
+
+bool LoadImg(char * filename, uint8 * ram, int size);
+uint8 RdMem(uint16 addr);
+void WrMem(uint16 addr, uint8 b);
+static void SaveApple2State(const char * filename);
+static bool LoadApple2State(const char * filename);
+
+// Local timer callback functions
+
+static void FrameCallback(void);
+static void BlinkTimer(void);
+
+// Test GUI function
+
+Element * TestWindow(void)
+{
+ Element * win = new DraggableWindow2(10, 10, 128, 128);
+// ((DraggableWindow *)win)->AddElement(new TextEdit(4, 16, 92, 0, "u2prog.dsk", win));
+
+ return win;
+}
+
+Element * QuitEmulator(void)
+{
+ gui->Stop();
+ running = false;
+
+ return NULL;
+}
+
+/*
+ Small Apple II memory map:
+
+$C010 - Clear bit 7 of keyboard data ($C000)
+$C030 - Toggle speaker diaphragm
+$C051 - Display text
+$C054 - Select page 1
+$C056 - Select lo-res
+$C058 - Set annuciator-0 output to 0
+$C05A - Set annuciator-0 output to 0
+$C05D - Set annuciator-0 output to 1
+$C05F - Set annuciator-0 output to 1
+$C0E0 - Disk control stepper ($C0E0-7)
+$C0E9 - Disk control motor (on)
+$C0EA - Disk enable (drive 1)
+$C0EC - Disk R/W
+$C0EE - Disk set read mode
+*/
+
+//
+// V65C02 read/write memory functions
+//
+
+uint8 RdMem(uint16 addr)
+{
+ uint8 b;
+
+#if 0
+if (addr >= 0xC000 && addr <= 0xC0FF)
+ WriteLog("\n*** Read at I/O address %04X\n", addr);
+#endif
+#if 0
+if (addr >= 0xC080 && addr <= 0xC08F)
+ WriteLog("\n*** Read at I/O address %04X\n", addr);
+#endif
+
+ if ((addr & 0xFFF0) == 0xC000)
+ {
+ return lastKeyPressed | (keyDown ? 0x80 : 0x00);
+ }
+ else if ((addr & 0xFFF0) == 0xC010)
+ {
+//This is bogus: keyDown is set to false, so return val NEVER is set...
+//Fixed...
+//Also, this is IIe/IIc only...!
+ uint8 retVal = lastKeyPressed | (keyDown ? 0x80 : 0x00);
+ keyDown = false;
+ return retVal;
+ }
+ else if ((addr & 0xFFF0) == 0xC030)
+ {
+ ToggleSpeaker(GetCurrentV65C02Clock());
+//should it return something else here???
+ return 0x00;
+ }
+ else if (addr == 0xC050)
+ {
+ textMode = false;
+ }
+ else if (addr == 0xC051)
+ {
+ textMode = true;
+ }
+ else if (addr == 0xC052)
+ {
+ mixedMode = false;
+ }
+ else if (addr == 0xC053)
+ {
+ mixedMode = true;
+ }
+ else if (addr == 0xC054)
+ {
+ displayPage2 = false;
+ }
+ else if (addr == 0xC055)
+ {
+ displayPage2 = true;
+ }
+ else if (addr == 0xC056)
+ {
+ hiRes = false;
+ }
+ else if (addr == 0xC057)
+ {
+ hiRes = true;
+ }
+
+//Note that this is a kludge: The $D000-$DFFF 4K space is shared (since $C000-$CFFF is
+//memory mapped) between TWO banks, and that that $E000-$FFFF RAM space is a single bank.
+//[SHOULD BE FIXED NOW]
+//OK! This switch selects bank 2 of the 4K bank at $D000-$DFFF. One access makes it
+//visible, two makes it R/W.
+
+ else if ((addr & 0xFFFB) == 0xC080)
+ {
+//$C080 49280 OECG R Read RAM bank 2; no write
+ visibleBank = LC_BANK_2;
+ readRAM = true;
+ writeRAM = false;
+ }
+ else if ((addr & 0xFFFB) == 0xC081)
+ {
+//$C081 49281 ROMIN OECG RR Read ROM; write RAM bank 2
+ visibleBank = LC_BANK_2;
+ readRAM = false;
+ writeRAM = true;
+ }
+ else if ((addr & 0xFFFB) == 0xC082)
+ {
+//$C082 49282 OECG R Read ROM; no write
+ visibleBank = LC_BANK_2;
+ readRAM = false;
+ writeRAM = false;
+ }
+ else if ((addr & 0xFFFB) == 0xC083)
+ {
+//$C083 49283 LCBANK2 OECG RR Read/write RAM bank 2
+ visibleBank = LC_BANK_2;
+ readRAM = true;
+ writeRAM = true;
+ }
+ else if ((addr & 0xFFFB) == 0xC088)
+ {
+//$C088 49288 OECG R Read RAM bank 1; no write
+ visibleBank = LC_BANK_1;
+ readRAM = true;
+ writeRAM = false;
+ }
+ else if ((addr & 0xFFFB) == 0xC089)
+ {
+//$C089 49289 OECG RR Read ROM; write RAM bank 1
+ visibleBank = LC_BANK_1;
+ readRAM = false;
+ writeRAM = true;
+ }
+ else if ((addr & 0xFFFB) == 0xC08A)
+ {
+//$C08A 49290 OECG R Read ROM; no write
+ visibleBank = LC_BANK_1;
+ readRAM = false;
+ writeRAM = false;
+ }
+ else if ((addr & 0xFFFB) == 0xC08B)
+ {
+//$C08B 49291 OECG RR Read/write RAM bank 1
+ visibleBank = LC_BANK_1;
+ readRAM = true;
+ writeRAM = true;
+ }
+ else if ((addr & 0xFFF8) == 0xC0E0)
+ {
+ floppyDrive.ControlStepper(addr & 0x07);
+ }
+ else if ((addr & 0xFFFE) == 0xC0E8)
+ {
+ floppyDrive.ControlMotor(addr & 0x01);
+ }
+ else if ((addr & 0xFFFE) == 0xC0EA)
+ {
+ floppyDrive.DriveEnable(addr & 0x01);
+ }
+ else if (addr == 0xC0EC)
+ {
+ return floppyDrive.ReadWrite();
+ }
+ else if (addr == 0xC0ED)
+ {
+ return floppyDrive.GetLatchValue();
+ }
+ else if (addr == 0xC0EE)
+ {
+ floppyDrive.SetReadMode();
+ }
+ else if (addr == 0xC0EF)
+ {
+ floppyDrive.SetWriteMode();
+ }
+
+//This sux...
+ if (addr >= 0xC100 && addr <= 0xCFFF) // The $C000-$CFFF block is *never* RAM
+ b = rom[addr];
+ else if (addr >= 0xD000)
+ {
+ if (readRAM)
+ {
+ if (addr <= 0xDFFF && visibleBank == LC_BANK_1)
+ b = ram[addr - 0x1000];
+ else
+ b = ram[addr];
+ }
+ else
+ b = rom[addr];
+ }
+ else
+ b = ram[addr];
+
+ return b;
+}
+
+/*
+A-9 (Mockingboard)
+APPENDIX F Assembly Language Program Listings
+
+ 1 *PRIMARY ROUTINES
+ 2 *FOR SLOT 4
+ 3 *
+ 4 ORG $9000
+ 5 * ;ADDRESSES
+ FOR FIRST
+ 6522
+ 6 ORB EQU $C400 ;PORT B
+ 7 ORA EQU $C401 ;PORT A
+ 8 DDRB EQU $C402 ;DATA DIRECTION
+ REGISTER (A)
+ 9 DDRA EQU $C403 ;DATA DIRECTION
+ REGISTER (B)
+ 10 * ;ADDRESSES
+ FOR SECOND
+ 6522
+ 11 ORB2 EQU $C480 ;PORT B
+ 12 ORA2 EQU $C481 ;PORT A
+ 13 DDRB2 EQU $C482 ;DATA DIRECTION
+ REGISTER (B)
+ 14 DDRA2 EQU $C483 ;DATA DIRECTION
+ REGISTER (A)
+*/
+void WrMem(uint16 addr, uint8 b)
+{
+//temp...
+//extern V6809REGS regs;
+//if (addr >= 0xC800 && addr <= 0xCBFE)
+//if (addr == 0xC80F || addr == 0xC80D)
+// WriteLog("WrMem: Writing address %04X with %02X [PC=%04X, $CB00=%02X]\n", addr, b, regs.pc, gram[0xCB00]);//*/
+
+#if 0
+if (addr >= 0xC000 && addr <= 0xC0FF)
+ WriteLog("\n*** Write at I/O address %04X\n", addr);
+#endif
+/*
+Check the BIKO version on Asimov to see if it's been cracked or not...
+
+7F3D: 29 07 AND #$07 [PC=7F3F, SP=01EA, CC=---B-I--, A=01, X=4B, Y=00]
+7F3F: C9 06 CMP #$06 [PC=7F41, SP=01EA, CC=N--B-I--, A=01, X=4B, Y=00]
+7F41: 90 03 BCC $7F46 [PC=7F46, SP=01EA, CC=N--B-I--, A=01, X=4B, Y=00]
+[7F43: 4C 83 7E JMP $7E83] <- Skipped over... (Prints "THANK YOU VERY MUCH!")
+7F46: AA TAX [PC=7F47, SP=01EA, CC=---B-I--, A=01, X=01, Y=00]
+
+; INX here *ensures* 1 - 6!!! BUG!!!
+; Or is it? Could this be part of a braindead copy protection scheme? It's
+; awfully close to NOP ($EA)...
+; Nothing else touches it once it's been written... Hmm...
+
+7F47: E8 INX [PC=7F48, SP=01EA, CC=---B-I--, A=01, X=02, Y=00]
+7F48: F8 SED [PC=7F49, SP=01EA, CC=---BDI--, A=01, X=02, Y=00]
+7F49: 18 CLC [PC=7F4A, SP=01EA, CC=---BDI--, A=01, X=02, Y=00]
+7F4A: BD 15 4E LDA $4E15,X [PC=7F4D, SP=01EA, CC=---BDI--, A=15, X=02, Y=00]
+
+; 4E13: 03 00
+; 4E15: 25 25 15 15 10 20
+; 4E1B: 03 41 99 99 01 00 12
+; 4E22: 99 70
+
+7F4D: 65 FC ADC $FC [PC=7F4F, SP=01EA, CC=---BDI--, A=16, X=02, Y=00]
+7F4F: 65 FC ADC $FC [PC=7F51, SP=01EA, CC=---BDI--, A=17, X=02, Y=00]
+7F51: 65 FC ADC $FC [PC=7F53, SP=01EA, CC=---BDI--, A=18, X=02, Y=00]
+7F53: 65 FC ADC $FC [PC=7F55, SP=01EA, CC=---BDI--, A=19, X=02, Y=00]
+
+; NO checking is done on the raised stat! Aarrrgggghhhhh!
+
+7F55: 9D 15 4E STA $4E15,X [PC=7F58, SP=01EA, CC=---BDI--, A=19, X=02, Y=00]
+7F58: D8 CLD [PC=7F59, SP=01EA, CC=---B-I--, A=19, X=02, Y=00]
+
+; Print "ALAKAZAM!" and so on...
+
+7F59: 20 2C 40 JSR $402C [PC=402C, SP=01E8, CC=---B-I--, A=19, X=02, Y=00]
+*/
+#if 0
+if (addr == 0x7F47)
+ WriteLog("\n*** Byte %02X written at address %04X\n", b, addr);
+#endif
+/*
+CLR80STORE=$C000 ;80STORE Off- disable 80-column memory mapping (Write)
+SET80STORE=$C001 ;80STORE On- enable 80-column memory mapping (WR-only)
+
+CLRAUXRD = $C002 ;read from main 48K (WR-only)
+SETAUXRD = $C003 ;read from aux/alt 48K (WR-only)
+
+CLRAUXWR = $C004 ;write to main 48K (WR-only)
+SETAUXWR = $C005 ;write to aux/alt 48K (WR-only)
+
+CLRCXROM = $C006 ;use ROM on cards (WR-only)
+SETCXROM = $C007 ;use internal ROM (WR-only)
+
+CLRAUXZP = $C008 ;use main zero page, stack, & LC (WR-only)
+SETAUXZP = $C009 ;use alt zero page, stack, & LC (WR-only)
+
+CLRC3ROM = $C00A ;use internal Slot 3 ROM (WR-only)
+SETC3ROM = $C00B ;use external Slot 3 ROM (WR-only)
+
+CLR80VID = $C00C ;disable 80-column display mode (WR-only)
+SET80VID = $C00D ;enable 80-column display mode (WR-only)
+
+CLRALTCH = $C00E ;use main char set- norm LC, Flash UC (WR-only)
+SETALTCH = $C00F ;use alt char set- norm inverse, LC; no Flash (WR-only)
+*/
+ if (addr == 0xC00E)
+ {
+ alternateCharset = false;
+ }
+ else if (addr == 0xC00F)
+ {
+ alternateCharset = true;
+ }
+ else if ((addr & 0xFFF0) == 0xC010) // Keyboard strobe
+ {
+ keyDown = false;
+ }
+ else if (addr == 0xC050)
+ {
+ textMode = false;
+ }
+ else if (addr == 0xC051)
+ {
+ textMode = true;
+ }
+ else if (addr == 0xC052)
+ {
+ mixedMode = false;
+ }
+ else if (addr == 0xC053)
+ {
+ mixedMode = true;
+ }
+ else if (addr == 0xC054)
+ {
+ displayPage2 = false;
+ }
+ else if (addr == 0xC055)
+ {
+ displayPage2 = true;
+ }
+ else if (addr == 0xC056)
+ {
+ hiRes = false;
+ }
+ else if (addr == 0xC057)
+ {
+ hiRes = true;
+ }
+ else if ((addr & 0xFFF8) == 0xC0E0)
+ {
+ floppyDrive.ControlStepper(addr & 0x07);
+ }
+ else if ((addr & 0xFFFE) == 0xC0E8)
+ {
+ floppyDrive.ControlMotor(addr & 0x01);
+ }
+ else if ((addr & 0xFFFE) == 0xC0EA)
+ {
+ floppyDrive.DriveEnable(addr & 0x01);
+ }
+ else if (addr == 0xC0EC)
+ {
+//change this to Write()? (and the other to Read()?) Dunno. Seems to work OK, but still...
+ floppyDrive.ReadWrite();
+ }
+ else if (addr == 0xC0ED)
+ {
+ floppyDrive.SetLatchValue(b);
+ }
+ else if (addr == 0xC0EE)
+ {
+ floppyDrive.SetReadMode();
+ }
+ else if (addr == 0xC0EF)
+ {
+ floppyDrive.SetWriteMode();
+ }
+//Still need to add missing I/O switches here...
+
+ if (addr >= 0xD000)
+ {
+ if (writeRAM)
+ {
+ if (addr <= 0xDFFF && visibleBank == LC_BANK_1)
+ ram[addr - 0x1000] = b;
+ else
+ ram[addr] = b;
+ }
+
+ return;
+ }
+
+ ram[addr] = b;
+}
+
+//
+// Load a file into RAM/ROM image space
+//
+bool LoadImg(char * filename, uint8 * ram, int size)
+{
+ FILE * fp = fopen(filename, "rb");
+
+ if (fp == NULL)
+ return false;
+
+ fread(ram, 1, size, fp);
+ fclose(fp);
+
+ return true;
+}
+
+static void SaveApple2State(const char * filename)
+{
+}
+
+static bool LoadApple2State(const char * filename)
+{
+ return false;
+}
+
+//
+// Main loop
+//
+int main(int /*argc*/, char * /*argv*/[])
+{
+ InitLog("./apple2.log");
+ LoadSettings();
+ srand(time(NULL)); // Initialize RNG
+
+ // Zero out memory
+//Need to bankify this stuff for the IIe emulation...
+ memset(ram, 0, 0x10000);
+ memset(rom, 0, 0x10000);
+
+ // Set up V65C02 execution context
+ memset(&mainCPU, 0, sizeof(V65C02REGS));
+ mainCPU.RdMem = RdMem;
+ mainCPU.WrMem = WrMem;
+ mainCPU.cpuFlags |= V65C02_ASSERT_LINE_RESET;
+
+ if (!LoadImg(settings.BIOSPath, rom + 0xD000, 0x3000))
+ {
+ WriteLog("Could not open file '%s'!\n", settings.BIOSPath);
+ return -1;
+ }
+
+//This is now included...
+/* if (!LoadImg(settings.diskPath, diskRom, 0x100))
+ {
+ WriteLog("Could not open file '%s'!\nDisk II will be unavailable!\n", settings.diskPath);
+// return -1;
+ }//*/
+
+//Load up disk image from config file (for now)...
+ floppyDrive.LoadImage(settings.diskImagePath1, 0);
+ floppyDrive.LoadImage(settings.diskImagePath2, 1);
+// floppyDrive.LoadImage("./disks/temp.nib", 1); // Load temp .nib file into second drive...
+
+//Kill the DOS ROM in slot 6 for now...
+//not
+ memcpy(rom + 0xC600, diskROM, 0x100);
+
+ WriteLog("About to initialize video...\n");
+ if (!InitVideo())
+ {
+ cout << "Aborting!" << endl;
+ return -1;
+ }
+
+ // Have to do this *after* video init but *before* sound init...!
+//Shouldn't be necessary since we're not doing emulation in the ISR...
+ if (settings.autoStateSaving)
+ {
+ // Load last state from file...
+ if (!LoadApple2State(settings.autoStatePath))
+ WriteLog("Unable to use Apple2 state file \"%s\"!\n", settings.autoStatePath);
+ }
+
+
+#if 0
+// State loading!
+if (!LoadImg("./BT1_6502_RAM_SPACE.bin", ram, 0x10000))
+{
+ cout << "Couldn't load state file!" << endl;
+ cout << "Aborting!!" << endl;
+ return -1;
+}
+
+//A P Y X S PC
+//-- -- -- -- ----- -----
+//00 75 3B 53 FD 01 41 44
+
+mainCPU.cpuFlags = 0;
+mainCPU.a = 0x00;
+mainCPU.x = 0x53;
+mainCPU.y = 0x3B;
+mainCPU.cc = 0x75;
+mainCPU.sp = 0xFD;
+mainCPU.pc = 0x4441;
+
+textMode = false;
+mixedMode = false;
+displayPage2 = false;
+hiRes = true;
+
+//kludge...
+readHiRam = true;
+//dumpDis=true;
+//kludge II...
+memcpy(ram + 0xD000, ram + 0xC000, 0x1000);
+#endif
+
+ WriteLog("About to initialize audio...\n");
+ SoundInit();
+ SDL_EnableUNICODE(1); // Needed to do key translation shit
+
+ gui = new GUI(surface); // Set up the GUI system object...
+ gui->AddMenuTitle("Apple2");
+ gui->AddMenuItem("Test!", TestWindow/*, hotkey*/);
+ gui->AddMenuItem("");
+ gui->AddMenuItem("Quit", QuitEmulator, SDLK_q);
+ gui->CommitItemsToMenu();
+
+ SetupBlurTable(); // Set up the color TV emulation blur table
+ running = true; // Set running status...
+
+ InitializeEventList(); // Clear the event list before we use it...
+ SetCallbackTime(FrameCallback, 16666.66666667); // Set frame to fire at 1/60 s interval
+ SetCallbackTime(BlinkTimer, 250000); // Set up blinking at 1/4 s intervals
+ startTicks = SDL_GetTicks();
+
+ WriteLog("Entering main loop...\n");
+ while (running)
+ {
+ double timeToNextEvent = GetTimeToNextEvent();
+ Execute65C02(&mainCPU, USEC_TO_M6502_CYCLES(timeToNextEvent));
+//We MUST remove a frame's worth of time in order for the CPU to function... !!! FIX !!!
+//(Fix so that this is not a requirement!)
+ mainCPU.clock -= USEC_TO_M6502_CYCLES(timeToNextEvent);
+ HandleNextEvent();
+ }
+
+ if (settings.autoStateSaving)
+ {
+ // Save state here...
+ SaveApple2State(settings.autoStatePath);
+ }
+floppyDrive.SaveImage();
+
+ SoundDone();
+ VideoDone();
+ SaveSettings();
+ LogDone();
+
+ return 0;
+}
+
+/*
+Apple II keycodes
+-----------------
+
+Key Aln CTL SHF BTH
+-----------------------
+space $A0 $A0 $A0 $A0 No xlation
+RETURN $8D $8D $8D $8D No xlation
+0 $B0 $B0 $B0 $B0 Need to screen shift+0 (?)
+1! $B1 $B1 $A1 $A1 No xlation
+2" $B2 $B2 $A2 $A2 No xlation
+3# $B3 $B3 $A3 $A3 No xlation
+4$ $B4 $B4 $A4 $A4 No xlation
+5% $B5 $B5 $A5 $A5 No xlation
+6& $B6 $B6 $A6 $A6 No xlation
+7' $B7 $B7 $A7 $A7 No xlation
+8( $B8 $B8 $A8 $A8 No xlation
+9) $B9 $B9 $A9 $A9 No xlation
+:* $BA $BA $AA $AA No xlation
+;+ $BB $BB $AB $AB No xlation
+,< $AC $AC $BC $BC No xlation
+-= $AD $AD $BD $BD No xlation
+.> $AE $AE $BE $BE No xlation
+/? $AF $AF $BF $BF No xlation
+A $C1 $81 $C1 $81
+B $C2 $82 $C2 $82
+C $C3 $83 $C3 $83
+D $C4 $84 $C4 $84
+E $C5 $85 $C5 $85
+F $C6 $86 $C6 $86
+G $C7 $87 $C7 $87
+H $C8 $88 $C8 $88
+I $C9 $89 $C9 $89
+J $CA $8A $CA $8A
+K $CB $8B $CB $8B
+L $CC $8C $CC $8C
+M $CD $8D $DD $9D -> ODD
+N^ $CE $8E $DE $9E -> ODD
+O $CF $8F $CF $8F
+P@ $D0 $90 $C0 $80 Need to xlate CTL+SHFT+P & SHFT+P (?)
+Q $D1 $91 $D1 $91
+R $D2 $92 $D2 $92
+S $D3 $93 $D3 $93
+T $D4 $94 $D4 $94
+U $D5 $95 $D5 $95
+V $D6 $96 $D6 $96
+W $D7 $97 $D7 $97
+X $D8 $98 $D8 $98
+Y $D9 $99 $D9 $99
+Z $DA $9A $DA $9A
+<- $88 $88 $88 $88
+-> $95 $95 $95 $95
+ESC $9B $9B $9B $9B No xlation
+
+*/
+static void FrameCallback(void)
+{
+ SDL_Event event;
+
+ while (SDL_PollEvent(&event))
+ {
+ switch (event.type)
+ {
+ case SDL_KEYDOWN:
+ if (event.key.keysym.unicode != 0)
+ {
+//Need to do some key translation here, and screen out non-apple keys as well...
+ if (event.key.keysym.sym == SDLK_TAB) // Prelim key screening...
+ break;
+
+ lastKeyPressed = event.key.keysym.unicode;
+ keyDown = true;
+ //kludge: should have a caps lock thingy here...
+ //or all uppercase for ][+...
+ if (lastKeyPressed >= 'a' && lastKeyPressed <='z')
+ lastKeyPressed &= 0xDF; // Convert to upper case...
+ }
+
+ // CTRL+RESET key emulation (mapped to CTRL+`)
+// This doesn't work...
+// if (event.key.keysym.sym == SDLK_BREAK && (event.key.keysym.mod & KMOD_CTRL))
+// if (event.key.keysym.sym == SDLK_PAUSE && (event.key.keysym.mod & KMOD_CTRL))
+ if (event.key.keysym.sym == SDLK_BACKQUOTE && (event.key.keysym.mod & KMOD_CTRL))
+//NOTE that this shouldn't take place until the key is lifted... !!! FIX !!!
+//ALSO it seems to leave the machine in an inconsistent state vis-a-vis the language card...
+ mainCPU.cpuFlags |= V65C02_ASSERT_LINE_RESET;
+
+ if (event.key.keysym.sym == SDLK_RIGHT)
+ lastKeyPressed = 0x15, keyDown = true;
+ else if (event.key.keysym.sym == SDLK_LEFT)
+ lastKeyPressed = 0x08, keyDown = true;
+
+ // Use ALT+Q to exit, as well as the usual window decoration method
+ if (event.key.keysym.sym == SDLK_q && (event.key.keysym.mod & KMOD_ALT))
+ running = false;
+
+ if (event.key.keysym.sym == SDLK_F12)
+ dumpDis = !dumpDis; // Toggle the disassembly process
+ else if (event.key.keysym.sym == SDLK_F11)
+ floppyDrive.LoadImage("./disks/bt1_char.dsk");//Kludge to load char disk...
+else if (event.key.keysym.sym == SDLK_F9)
+{
+ floppyDrive.CreateBlankImage();
+// SpawnMessage("Image cleared...");
+}//*/
+else if (event.key.keysym.sym == SDLK_F10)
+{
+ floppyDrive.SwapImages();
+// SpawnMessage("Image swapped...");
+}//*/
+
+ if (event.key.keysym.sym == SDLK_F2)// Toggle the palette
+ TogglePalette();
+ else if (event.key.keysym.sym == SDLK_F3)// Cycle through screen types
+ CycleScreenTypes();
+
+// if (event.key.keysym.sym == SDLK_F5) // Temp GUI launch key
+ if (event.key.keysym.sym == SDLK_F1) // GUI launch key
+//NOTE: Should parse the output to determine whether or not the user requested
+// to quit completely... !!! FIX !!!
+ gui->Run();
+
+ break;
+ case SDL_QUIT:
+ running = false;
+ }
+ }
+
+ HandleSoundAtFrameEdge(); // Sound stuff... (ick)
+ RenderVideoFrame();
+ SetCallbackTime(FrameCallback, 16666.66666667);
+
+ while (SDL_GetTicks() - startTicks < 16); // Wait for next frame...
+ startTicks = SDL_GetTicks();
+}
+
+static void BlinkTimer(void)
+{
+ flash = !flash;
+ SetCallbackTime(BlinkTimer, 250000); // Set up blinking at 1/4 sec intervals
+}
projects / apple2 / blobdiff