#define THREADED_65C02
#define CPU_THREAD_OVERFLOW_COMPENSATION
-//#define DEBUG_LC
+#define DEBUG_LC
//#define CPU_CLOCK_CHECKING
-#define THREAD_DEBUGGING
+//#define THREAD_DEBUGGING
+#define SOFT_SWITCH_DEBUGGING
// Global variables
uint8_t ram[0x10000], rom[0x10000]; // RAM & ROM spaces
-uint8_t ram2[0x10000];
+uint8_t ram2[0x10000]; // Auxillary RAM
uint8_t diskRom[0x100]; // Disk ROM space
V65C02REGS mainCPU; // v65C02 execution context
-uint8_t appleType = APPLE_TYPE_II;
+uint8_t appleType = APPLE_TYPE_IIE;
FloppyDrive floppyDrive;
// Local variables
static bool keyDown = false;
static bool openAppleDown = false;
static bool closedAppleDown = false;
+static bool store80Mode = false;
+static bool vbl = false;
+static bool slotCXROM = false;
+static bool slotC3ROM = false;
+static bool ramrd = false;
+static bool ramwrt = false;
+static bool altzp = false;
+static bool ioudis = true;
+bool dhires = false;
//static FloppyDrive floppyDrive;
static bool cpuSleep = false;
+// NB: Apple //e Manual sez 6502 is running @ 1,022,727 Hz
+
// Let's try a thread...
/*
Here's how it works: Execute 1 frame's worth, then sleep.
}
#endif
-WriteLog("CPUThread: Supposedly end of frame...\n");
+//WriteLog("CPUThread: Supposedly end of frame...\n");
#ifdef THREAD_DEBUGGING
WriteLog("CPU: SDL_mutexP(cpuMutex);\n");
{
return lastKeyPressed | (keyDown ? 0x80 : 0x00);
}
- else if ((addr & 0xFFF0) == 0xC010) // Read $C010-$C01F
+// else if ((addr & 0xFFF8) == 0xC010) // Read $C010-$C01F
+ else if (addr == 0xC010)
{
//This is bogus: keyDown is set to false, so return val NEVER is set...
//Fixed...
keyDown = false;
return retVal;
}
+ // These are //e locations
+ else if (addr == 0xC011)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("RDBANK2 (read)\n");
+#endif
+ return (visibleBank == LC_BANK_2 ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC012)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("RDLCRAM (read)\n");
+#endif
+ return (readRAM ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC013)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("RAMRD (read)\n");
+#endif
+ return (ramrd ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC014)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("RAMWRT (read)\n");
+#endif
+ return (ramwrt ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC015)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("SLOTCXROM (read)\n");
+#endif
+ return (slotCXROM ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC016)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("ALTZP (read)\n");
+#endif
+ return (altzp ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC017)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("SLOTC3ROM (read)\n");
+#endif
+ return (slotC3ROM ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC018)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("80STORE (read)\n");
+#endif
+ return (store80Mode ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC019)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("VBL (read)\n");
+#endif
+ return (vbl ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC01A)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("TEXT (read)\n");
+#endif
+ return (textMode ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC01B)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("MIXED (read)\n");
+#endif
+ return (mixedMode ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC01C)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("PAGE2 (read)\n");
+#endif
+ return (displayPage2 ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC01D)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("HIRES (read)\n");
+#endif
+ return (hiRes ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC01E)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("ALTCHARSET (read)\n");
+#endif
+ return (alternateCharset ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC01F)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("80COL (read)\n");
+#endif
+ return (col80Mode ? 0x80 : 0x00);
+ }
else if ((addr & 0xFFF0) == 0xC030) // Read $C030-$C03F
{
/*
}
else if (addr == 0xC050) // Read $C050
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("TEXT off (read)\n");
+#endif
textMode = false;
}
else if (addr == 0xC051) // Read $C051
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("TEXT on (read)\n");
+#endif
textMode = true;
}
else if (addr == 0xC052) // Read $C052
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("MIXED off (read)\n");
+#endif
mixedMode = false;
}
else if (addr == 0xC053) // Read $C053
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("MIXED on (read)\n");
+#endif
mixedMode = true;
}
else if (addr == 0xC054) // Read $C054
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("PAGE2 off (read)\n");
+#endif
displayPage2 = false;
}
else if (addr == 0xC055) // Read $C055
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("PAGE2 on (read)\n");
+#endif
displayPage2 = true;
}
else if (addr == 0xC056) // Read $C056
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("HIRES off (read)\n");
+#endif
hiRes = false;
}
else if (addr == 0xC057) // Read $C057
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("HIRES on (read)\n");
+#endif
hiRes = true;
}
+ else if (addr == 0xC05E)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("DHIRES on (read)\n");
+#endif
+ if (ioudis)
+ dhires = true;
+ }
+ else if (addr == 0xC05F)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("DHIRES off (read)\n");
+#endif
+ if (ioudis)
+ dhires = false;
+ }
else if (addr == 0xC061) // Read $C061
{
// Open Apple key (or push button 0)
// Open Apple key (or push button 0)
return (closedAppleDown ? 0x80 : 0x00);
}
+ // The way the paddles work is that a strobe is written (or read) to $C070,
+ // then software counts down the time that it takes for the paddle outputs
+ // to have bit 7 return to 0. If there are no paddles connected, bit 7
+ // stays at 1.
+ else if (addr == 0xC064) // Paddles 0-3
+ {
+ return 0xFF;
+ }
+ else if (addr == 0xC065)
+ {
+ return 0xFF;
+ }
+ else if (addr == 0xC066)
+ {
+ return 0xFF;
+ }
+ else if (addr == 0xC067)
+ {
+ return 0xFF;
+ }
+ else if (addr == 0xC07E)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("IOUDIS (read)\n");
+#endif
+ return (ioudis ? 0x80 : 0x00);
+ }
+ else if (addr == 0xC07F)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("DHIRES (read)\n");
+#endif
+ return (dhires ? 0x80 : 0x00);
+ }
//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.
showpath = true;
#endif
//This sux...
- if (addr >= 0xC100 && addr <= 0xCFFF) // The $C000-$CFFF block is *never* RAM
-#ifdef LC_DEBUGGING
+ if (addr >= 0xC100 && addr <= 0xC7FF) // The $C000-$CFFF block is *never* RAM
{
-#endif
- b = rom[addr];
+// Looks like the ][e ref manual got this one wrong: slotCXROM set should mean
+// use internal ROM, NOT slot ROM. :-/
+// (fixed now, by setting the switch correctly in the write mem section :-P)
+ if (!slotCXROM)
+// if (slotCXROM)
+ b = rom[addr];
+ else
+ {
+ if (addr >= 0xC100 && addr <= 0xC1FF)
+ b = parallelROM[addr & 0xFF];
+ else if (addr >= 0xC600 && addr <= 0xC6FF)
+ b = diskROM[addr & 0xFF];
+ else if (addr >= 0xC300 && addr <= 0xC3FF && !slotC3ROM)
+ b = rom[addr];
+ else
+ b = 0xFF;
+// b = rom[addr];
+ }
#ifdef LC_DEBUGGING
if (showpath)
WriteLog("b is from $C100-$CFFF block...\n");
- }
#endif
+ }
+ else if (addr >= 0xC800 && addr <= 0xCFFF) // 2K peripheral or OS ROM
+ {
+ b = rom[addr];
+ }
else if (addr >= 0xD000)
{
if (readRAM)
{
if (addr <= 0xDFFF && visibleBank == LC_BANK_1)
#ifdef LC_DEBUGGING
- {
+ {
#endif
b = ram[addr - 0x1000];
+// b = (ramrd ? ram2[addr - 0x1000] : ram[addr - 0x1000]);
#ifdef LC_DEBUGGING
if (showpath)
WriteLog("b is from LC bank #1 (ram[addr - 0x1000])...\n");
- }
+ }
#endif
else
#ifdef LC_DEBUGGING
- {
+ {
#endif
b = ram[addr];
+// b = (ramrd ? ram2[addr] : ram[addr]);
#ifdef LC_DEBUGGING
if (showpath)
WriteLog("b is from LC bank #2 (ram[addr])...\n");
- }
+ }
#endif
}
else
#ifdef LC_DEBUGGING
- {
+ {
#endif
b = rom[addr];
#ifdef LC_DEBUGGING
if (showpath)
WriteLog("b is from LC ROM (rom[addr])...\n");
- }
+ }
#endif
}
else
-#ifdef LC_DEBUGGING
{
+#if 1
+ // Check for 80STORE mode (STORE80 takes precedence over RAMRD/WRT)...
+ if ((((addr >= 0x0400) && (addr <= 0x07FF)) || ((addr >= 0x2000) && (addr <= 0x3FFF))) && store80Mode)
+ {
+ if (displayPage2)
+ b = ram2[addr];
+ else
+ b = ram[addr];
+
+ return b;
+ }
+
+ // Finally, check for auxillary/altzp write switches
#endif
- b = ram[addr];
+ if (addr < 0x0200)
+ b = (altzp ? ram2[addr] : ram[addr]);
+ else
+ b = (ramrd ? ram2[addr] : ram[addr]);
+// if (ramrd)
+// b = ram2[addr];
+// else
+// {
+// if (altzp)
+// b = ram2[addr];
+// else
+// b = ram[addr];
+// }
#ifdef LC_DEBUGGING
if (showpath)
WriteLog("b is from ram[addr]...\n");
- }
#endif
+ }
#ifdef LC_DEBUGGING
if (addr >= 0xD000 && addr <= 0xD00F)
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)
+ if (addr == 0xC000)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("80STORE off (write)\n");
+#endif
+ store80Mode = false;
+ }
+ else if (addr == 0xC001)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("80STORE on (write)\n");
+#endif
+ store80Mode = true;
+ }
+ else if (addr == 0xC002)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("RAMRD off (write)\n");
+#endif
+ ramrd = false;
+ }
+ else if (addr == 0xC003)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("RAMRD on (write)\n");
+#endif
+ ramrd = true;
+ }
+ else if (addr == 0xC004)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("RAMWRT off (write)\n");
+#endif
+ ramwrt = false;
+ }
+ else if (addr == 0xC005)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("RAMWRT on (write)\n");
+#endif
+ ramwrt = true;
+ }
+ else if (addr == 0xC006)
+ {
+ // This is the only soft switch that breaks the usual convention.
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("SLOTCXROM on (write)\n");
+#endif
+ slotCXROM = true;
+ }
+ else if (addr == 0xC007)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("SLOTCXROM off (write)\n");
+#endif
+ slotCXROM = false;
+ }
+ else if (addr == 0xC008)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("ALTZP off (write)\n");
+#endif
+ altzp = false;
+ }
+ else if (addr == 0xC009)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("ALTZP on (write)\n");
+#endif
+ altzp = true;
+ }
+ else if (addr == 0xC00A)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("SLOTC3ROM off (write)\n");
+#endif
+ slotC3ROM = false;
+ }
+ else if (addr == 0xC00B)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("SLOTC3ROM on (write)\n");
+#endif
+ slotC3ROM = true;
+ }
+ else if (addr == 0xC00C)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("80COL off (write)\n");
+#endif
+ col80Mode = false;
+ }
+ else if (addr == 0xC00D)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("80COL on (write)\n");
+#endif
+ col80Mode = true;
+ }
+ else if (addr == 0xC00E)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("ALTCHARSET off (write)\n");
+#endif
alternateCharset = false;
}
else if (addr == 0xC00F)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("ALTCHARSET on (write)\n");
+#endif
alternateCharset = true;
}
else if ((addr & 0xFFF0) == 0xC010) // Keyboard strobe
}
else if (addr == 0xC050)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("TEXT off (write)\n");
+#endif
textMode = false;
}
else if (addr == 0xC051)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("TEXT on (write)\n");
+#endif
textMode = true;
}
else if (addr == 0xC052)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("MIXED off (write)\n");
+#endif
mixedMode = false;
}
else if (addr == 0xC053)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("MIXED on (write)\n");
+#endif
mixedMode = true;
}
else if (addr == 0xC054)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("PAGE2 off (write)\n");
+#endif
displayPage2 = false;
}
else if (addr == 0xC055)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("PAGE2 on (write)\n");
+#endif
displayPage2 = true;
}
else if (addr == 0xC056)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("HIRES off (write)\n");
+#endif
hiRes = false;
}
else if (addr == 0xC057)
{
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("HIRES on (write)\n");
+#endif
hiRes = true;
}
+ else if (addr == 0xC05E)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("DHIRES on (write)\n");
+#endif
+ if (ioudis)
+ dhires = true;
+
+//static int goDumpDis = 0;
+//goDumpDis++;
+//if (goDumpDis == 2)
+// dumpDis = true;
+ }
+ else if (addr == 0xC05F)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("DHIRES off (write)\n");
+#endif
+ if (ioudis)
+ dhires = false;
+ }
+ else if (addr == 0xC07E)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("IOUDIS on (write)\n");
+#endif
+ ioudis = true;
+ }
+ else if (addr == 0xC07F)
+ {
+#ifdef SOFT_SWITCH_DEBUGGING
+WriteLog("IOUDIS off (write)\n");
+#endif
+ ioudis = false;
+ }
else if ((addr & 0xFFFB) == 0xC080)
{
#ifdef DEBUG_LC
{
if (writeRAM)
{
+#if 1
if (addr <= 0xDFFF && visibleBank == LC_BANK_1)
ram[addr - 0x1000] = b;
else
ram[addr] = b;
+#else
+ if (addr <= 0xDFFF && visibleBank == LC_BANK_1)
+ {
+ if (ramwrt)
+ ram2[addr - 0x1000] = b;
+ else
+ ram[addr - 0x1000] = b;
+ }
+ else
+ {
+ if (ramwrt)
+ ram2[addr] = b;
+ else
+ ram[addr] = b;
+ }
+#endif
}
return;
}
- ram[addr] = b;
+ // Check for 80STORE mode (STORE80 takes precedence over RAMRD/WRT)...
+ if ((((addr >= 0x0400) && (addr <= 0x07FF)) || ((addr >= 0x2000) && (addr <= 0x3FFF))) && store80Mode)
+ {
+ if (displayPage2)
+ ram2[addr] = b;
+ else
+ ram[addr] = b;
+
+ return;
+ }
+
+ // Finally, check for auxillary/altzp write switches
+#if 0
+ if (ramwrt)
+ ram2[addr] = b;
+ else
+ {
+ if (altzp)
+ ram2[addr] = b;
+ else
+ ram[addr] = b;
+ }
+#else
+ if (addr < 0x0200)
+ {
+ if (altzp)
+ ram2[addr] = b;
+ else
+ ram[addr] = b;
+ }
+ else
+ {
+ if (ramwrt)
+ ram2[addr] = b;
+ else
+ ram[addr] = b;
+ }
+#endif
}
mainCPU.WrMem = WrMem;
mainCPU.cpuFlags |= V65C02_ASSERT_LINE_RESET;
- if (!LoadImg(settings.BIOSPath, rom + 0xD000, 0x3000))
+// alternateCharset = true;
+// if (!LoadImg(settings.BIOSPath, rom + 0xD000, 0x3000))
+ if (!LoadImg(settings.BIOSPath, rom + 0xC000, 0x4000))
{
WriteLog("Could not open file '%s'!\n", settings.BIOSPath);
return -1;
//Kill the DOS ROM in slot 6 for now...
//not
- memcpy(rom + 0xC600, diskROM, 0x100);
+// memcpy(rom + 0xC600, diskROM, 0x100);
// memcpy(rom + 0xC700, diskROM, 0x100); // Slot 7???
WriteLog("About to initialize video...\n");
ESC $9B $9B $9B $9B No xlation
*/
-static uint64_t lastCPUCycles = 0;
+//static uint64_t lastCPUCycles = 0;
static uint32_t frameCount = 0;
static void FrameCallback(void)
{
//kludge: should have a caps lock thingy here...
//or all uppercase for ][+...
- if (lastKeyPressed >= 'a' && lastKeyPressed <='z')
- lastKeyPressed &= 0xDF; // Convert to upper case...
+// if (lastKeyPressed >= 'a' && lastKeyPressed <='z')
+// lastKeyPressed &= 0xDF; // Convert to upper case...
break;
case SDL_KEYDOWN:
lastKeyPressed = 0x15, keyDown = true;
else if (event.key.keysym.sym == SDLK_LEFT)
lastKeyPressed = 0x08, keyDown = true;
+ else if (event.key.keysym.sym == SDLK_UP)
+ lastKeyPressed = 0x0B, keyDown = true;
+ else if (event.key.keysym.sym == SDLK_DOWN)
+ lastKeyPressed = 0x0A, keyDown = true;
else if (event.key.keysym.sym == SDLK_RETURN)
lastKeyPressed = 0x0D, keyDown = true;
else if (event.key.keysym.sym == SDLK_ESCAPE)
lastKeyPressed = 0x1B, keyDown = true;
+ else if (event.key.keysym.sym == SDLK_BACKSPACE)
+ lastKeyPressed = 0x7F, keyDown = true;
// Fix CTRL+key combo...
if (event.key.keysym.mod & KMOD_CTRL)
SDL_Delay(1); // Wait for next frame...
startTicks = SDL_GetTicks();
-#if 1
+#if 0
uint64_t cpuCycles = GetCurrentV65C02Clock();
uint32_t cyclesBurned = (uint32_t)(cpuCycles - lastCPUCycles);
WriteLog("FrameCallback: used %i cycles\n", cyclesBurned);
projects / apple2 / blobdiff