// WHO WHEN WHAT
// --- ---------- ------------------------------------------------------------
// JLH 11/12/2005 Initial port to SDL
-// JLH 11/18/2005 Wired up graphic soft switches
+// 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
//
//OK! This switch selects bank 2 of the 4K bank at $D000-$DFFF. One access makes it
//visible, two makes it R/W.
+/*
+301 LDA $E000
+304 PHA
+305 LDA $C081
+308 PLA
+309 PHA
+30A CMP $E000
+30D BNE $332
+30F LDA $C083
+312 LDA $C083
+315 LDA #$A5
+317 STA $D000
+31A CMP $D000
+31D BNE $332
+31F LSR A
+320 STA $D000
+323 CMP $D000
+326 BNE $332
+328 LDA $C081
+32B LDA $C081
+32E LDA #$01
+330 BNE $334
+332 LDA #$00
+334 STA $300
+337 PLA
+338 CMP $E000
+33B BEQ $340
+33D LDA $C080
+340 RTS
+
+A = PEEK($C082)
+*/
+
+#define DEBUG_LC
else if ((addr & 0xFFFB) == 0xC080)
{
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C080 49280 OECG R Read RAM bank 2; no write\n");
+#endif
//$C080 49280 OECG R Read RAM bank 2; no write
visibleBank = LC_BANK_2;
readRAM = true;
}
else if ((addr & 0xFFFB) == 0xC081)
{
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C081 49281 OECG RR Read ROM; write RAM bank 2\n");
+#endif
//$C081 49281 ROMIN OECG RR Read ROM; write RAM bank 2
visibleBank = LC_BANK_2;
readRAM = false;
}
else if ((addr & 0xFFFB) == 0xC082)
{
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C082 49282 OECG R Read ROM; no write\n");
+#endif
//$C082 49282 OECG R Read ROM; no write
visibleBank = LC_BANK_2;
readRAM = false;
}
else if ((addr & 0xFFFB) == 0xC083)
{
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C083 49283 OECG RR Read/Write RAM bank 2\n");
+#endif
//$C083 49283 LCBANK2 OECG RR Read/write RAM bank 2
visibleBank = LC_BANK_2;
readRAM = true;
}
else if ((addr & 0xFFFB) == 0xC088)
{
+#ifdef DEBUG_LC
+WriteLog("LC(R): $%04X 49288 OECG R Read RAM bank 1; no write\n", addr);
+#endif
//$C088 49288 OECG R Read RAM bank 1; no write
visibleBank = LC_BANK_1;
readRAM = true;
writeRAM = false;
+//Hm. Some stuff seems to want this.
+//nope, was looking at $C0E8... return 0xFF;
}
else if ((addr & 0xFFFB) == 0xC089)
{
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C089 49289 OECG RR Read ROM; write RAM bank 1\n");
+#endif
//$C089 49289 OECG RR Read ROM; write RAM bank 1
visibleBank = LC_BANK_1;
readRAM = false;
}
else if ((addr & 0xFFFB) == 0xC08A)
{
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C08A 49290 OECG R Read ROM; no write\n");
+#endif
//$C08A 49290 OECG R Read ROM; no write
visibleBank = LC_BANK_1;
readRAM = false;
}
else if ((addr & 0xFFFB) == 0xC08B)
{
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C08B 49291 OECG RR Read/Write RAM bank 1\n");
+#endif
//$C08B 49291 OECG RR Read/write RAM bank 1
visibleBank = LC_BANK_1;
readRAM = true;
else if (addr == 0xC0EC)
{
return floppyDrive.ReadWrite();
+//Hm, some stuff is looking at the return value. Dunno what it *should* be...
+// OK, it's from the ReadWrite routine...
+//return 0xFF;
}
else if (addr == 0xC0ED)
{
}
else if ((addr & 0xFFF0) == 0xC010) // Keyboard strobe
{
- keyDown = false;
+//Actually, according to the A2 ref, this should do nothing since a write
+//is immediately preceded by a read leaving it in the same state it was...
+// keyDown = false;
}
else if (addr == 0xC050)
{
{
hiRes = true;
}
+ else if ((addr & 0xFFFB) == 0xC080)
+ {
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C080 49280 OECG R Read RAM bank 2; no write\n");
+#endif
+//$C080 49280 OECG R Read RAM bank 2; no write
+ visibleBank = LC_BANK_2;
+ readRAM = true;
+ writeRAM = false;
+ }
+ else if ((addr & 0xFFFB) == 0xC081)
+ {
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C081 49281 OECG RR Read ROM; write RAM bank 2\n");
+#endif
+//$C081 49281 ROMIN OECG RR Read ROM; write RAM bank 2
+ visibleBank = LC_BANK_2;
+ readRAM = false;
+ writeRAM = true;
+ }
+ else if ((addr & 0xFFFB) == 0xC082)
+ {
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C082 49282 OECG R Read ROM; no write\n");
+#endif
+//$C082 49282 OECG R Read ROM; no write
+ visibleBank = LC_BANK_2;
+ readRAM = false;
+ writeRAM = false;
+ }
+ else if ((addr & 0xFFFB) == 0xC083)
+ {
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C083 49283 OECG RR Read/Write RAM bank 2\n");
+#endif
+//$C083 49283 LCBANK2 OECG RR Read/write RAM bank 2
+ visibleBank = LC_BANK_2;
+ readRAM = true;
+ writeRAM = true;
+ }
+ else if ((addr & 0xFFFB) == 0xC088)
+ {
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C088 49288 OECG R Read RAM bank 1; no write\n");
+#endif
+//$C088 49288 OECG R Read RAM bank 1; no write
+ visibleBank = LC_BANK_1;
+ readRAM = true;
+ writeRAM = false;
+ }
+ else if ((addr & 0xFFFB) == 0xC089)
+ {
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C089 49289 OECG RR Read ROM; write RAM bank 1\n");
+#endif
+//$C089 49289 OECG RR Read ROM; write RAM bank 1
+ visibleBank = LC_BANK_1;
+ readRAM = false;
+ writeRAM = true;
+ }
+ else if ((addr & 0xFFFB) == 0xC08A)
+ {
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C08A 49290 OECG R Read ROM; no write\n");
+#endif
+//$C08A 49290 OECG R Read ROM; no write
+ visibleBank = LC_BANK_1;
+ readRAM = false;
+ writeRAM = false;
+ }
+ else if ((addr & 0xFFFB) == 0xC08B)
+ {
+#ifdef DEBUG_LC
+WriteLog("LC(R): $C08B 49291 OECG RR Read/Write RAM bank 1\n");
+#endif
+//$C08B 49291 OECG RR Read/write RAM bank 1
+ visibleBank = LC_BANK_1;
+ readRAM = true;
+ writeRAM = true;
+ }
+//This is determined by which slot it is in--this assumes slot 6. !!! FIX !!!
else if ((addr & 0xFFF8) == 0xC0E0)
{
floppyDrive.ControlStepper(addr & 0x07);
//Load up disk image from config file (for now)...
floppyDrive.LoadImage(settings.diskImagePath1, 0);
- floppyDrive.LoadImage(settings.diskImagePath2, 1);
+// 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...
//(Fix so that this is not a requirement!)
//Fixed, but mainCPU.clock is destroyed in the bargain. Oh well.
// mainCPU.clock -= USEC_TO_M6502_CYCLES(timeToNextEvent);
+ // Handle CPU time delta for sound...
+ AddToSoundTimeBase(USEC_TO_M6502_CYCLES(timeToNextEvent));
HandleNextEvent();
}
}
}
- HandleSoundAtFrameEdge(); // Sound stuff... (ick)
+//ick. HandleSoundAtFrameEdge(); // Sound stuff... (ick)
RenderVideoFrame();
SetCallbackTime(FrameCallback, 16666.66666667);
projects / apple2 / blobdiff