aboutsummaryrefslogtreecommitdiff
path: root/source/ppu.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'source/ppu.cpp')
-rw-r--r--source/ppu.cpp222
1 files changed, 109 insertions, 113 deletions
diff --git a/source/ppu.cpp b/source/ppu.cpp
index def55e9..c7c11db 100644
--- a/source/ppu.cpp
+++ b/source/ppu.cpp
@@ -884,20 +884,27 @@ void S9xSetPPU (uint8 Byte, uint16 Address)
case 0x2135:
case 0x2136:
// Matrix 16bit x 8bit multiply result (read-only)
+ /* fall through */
case 0x2137:
// Software latch for horizontal and vertical timers (read-only)
+ /* fall through */
case 0x2138:
// OAM read data (read-only)
+ /* fall through */
case 0x2139:
case 0x213a:
// VRAM read data (read-only)
+ /* fall through */
case 0x213b:
// CG-RAM read data (read-only)
+ /* fall through */
case 0x213c:
case 0x213d:
// Horizontal and vertical (low/high) read counter (read-only)
+ /* fall through */
case 0x213e:
// PPU status (time over and range over)
+ /* fall through */
case 0x213f:
// NTSC/PAL select and field (read-only)
return;
@@ -963,7 +970,7 @@ void S9xSetPPU (uint8 Byte, uint16 Address)
if (Address == 0x2801 && Settings.SRTC)
S9xSetSRTC (Byte, Address);
else
- if (Address < 0x3000 || Address >= 0x3300)
+ if (Address < 0x3000 || Address >= 0x3000 + 768)
{
#ifdef DEBUGGER
missing.unknownppu_write = Address;
@@ -1084,25 +1091,47 @@ uint8 S9xGetPPU (uint16 Address)
case 0x2104:
case 0x2105:
case 0x2106:
+ case 0x2108:
+ case 0x2109:
+ case 0x210a:
+ case 0x2115:
+ case 0x2116:
+ case 0x2118:
+ case 0x2119:
+ case 0x211a:
+ case 0x2124:
+ case 0x2125:
+ case 0x2126:
+ case 0x2128:
+ case 0x2129:
+ case 0x212a:
#ifndef NO_OPEN_BUS
return PPU.OpenBus1;
#else
return 0; // Arbitrarily chosen value [Neb]
#endif
+
case 0x2107:
+ case 0x2117:
+ case 0x2121:
+ case 0x2122:
+ case 0x2123:
+ case 0x2127:
+ case 0x212b:
+ case 0x212c:
+ case 0x212d:
+ case 0x212e:
+ case 0x212f:
+ case 0x2130:
+ case 0x2131:
+ case 0x2132:
+ case 0x2133:
#ifndef NO_OPEN_BUS
return OpenBus;
#else
return 0; // Arbitrarily chosen value [Neb]
#endif
- case 0x2108:
- case 0x2109:
- case 0x210a:
-#ifndef NO_OPEN_BUS
- return PPU.OpenBus1;
-#else
- return 0; // Arbitrarily chosen value [Neb]
-#endif
+
case 0x210b:
case 0x210c:
case 0x210d:
@@ -1125,29 +1154,6 @@ uint8 S9xGetPPU (uint16 Address)
#ifdef DEBUGGER
missing.bg_offset_read = 1;
#endif
- case 0x2115:
- case 0x2116:
-#ifndef NO_OPEN_BUS
- return PPU.OpenBus1;
-#else
- return 0; // Arbitrarily chosen value [Neb]
-#endif
-
- case 0x2117:
-#ifndef NO_OPEN_BUS
- return OpenBus;
-#else
- return 0; // Arbitrarily chosen value [Neb]
-#endif
-
- case 0x2118:
- case 0x2119:
- case 0x211a:
-#ifndef NO_OPEN_BUS
- return PPU.OpenBus1;
-#else
- return 0; // Arbitrarily chosen value [Neb]
-#endif
case 0x211b:
case 0x211c:
@@ -1164,36 +1170,6 @@ uint8 S9xGetPPU (uint16 Address)
return 0; // Arbitrarily chosen value [Neb]
#endif
- case 0x2121:
- case 0x2122:
- case 0x2123:
- case 0x2127:
- case 0x212b:
- case 0x212c:
- case 0x212d:
- case 0x212e:
- case 0x212f:
- case 0x2130:
- case 0x2131:
- case 0x2132:
- case 0x2133:
-#ifndef NO_OPEN_BUS
- return OpenBus;
-#else
- return 0; // Arbitrarily chosen value [Neb]
-#endif
-
- case 0x2124:
- case 0x2125:
- case 0x2126:
- case 0x2128:
- case 0x2129:
- case 0x212a:
-#ifndef NO_OPEN_BUS
- return PPU.OpenBus1;
-#else
- return 0; // Arbitrarily chosen value [Neb]
-#endif
case 0x2134:
case 0x2135:
@@ -1529,6 +1505,12 @@ uint8 S9xGetPPU (uint16 Address)
case 0x2181:
case 0x2182:
case 0x2183:
+#ifndef NO_OPEN_BUS
+ return OpenBus;
+#else
+ return 0; // Arbitrarily chosen value [Neb]
+#endif
+
default:
#ifndef NO_OPEN_BUS
return OpenBus;
@@ -1758,6 +1740,7 @@ void S9xSetCPU (uint8 byte, uint16 Address)
break;
case 0x4206:
{
+ // TODO FAST_ALIGNED_LSB_WORD_ACCESS [Neb]
// Divisor
uint16 a = Memory.FillRAM[0x4204] + (Memory.FillRAM[0x4205] << 8);
uint16 div = byte ? a / byte : 0xffff;
@@ -1886,14 +1869,18 @@ void S9xSetCPU (uint8 byte, uint16 Address)
break;
case 0x4212:
// v-blank, h-blank and joypad being scanned flags (read-only)
+ /* fall through */
case 0x4213:
// I/O Port (read-only)
+ /* fall through */
case 0x4214:
case 0x4215:
// Quotent of divide (read-only)
+ /* fall through */
case 0x4216:
case 0x4217:
// Multiply product (read-only)
+ /* fall through */
case 0x4218:
case 0x4219:
case 0x421a:
@@ -2076,7 +2063,9 @@ void S9xSetCPU (uint8 byte, uint16 Address)
case 0x437B:
// Unknown, but they seem to be RAM-ish
+#ifdef DEBUGGER
fprintf(stderr, "Write %02x to %04x!\n", byte, Address);
+#endif
break;
//These registers are used by both the S-DD1 and the SPC7110
@@ -2337,6 +2326,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4217:
// Multiplcation result (for multiply) or remainder of
// divison.
+ /* fall through */
case 0x4218:
case 0x4219:
case 0x421a:
@@ -2346,7 +2336,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x421e:
case 0x421f:
// Joypads 1-4 button and direction state.
-
+ /* fall through */
case 0x4300:
case 0x4310:
case 0x4320:
@@ -2356,7 +2346,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4360:
case 0x4370:
// DMA direction, address type, fixed flag,
-
+ /* fall through */
case 0x4301:
case 0x4311:
case 0x4321:
@@ -2365,7 +2355,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4351:
case 0x4361:
case 0x4371:
-
+ /* fall through */
case 0x4302:
case 0x4312:
case 0x4322:
@@ -2374,7 +2364,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4352:
case 0x4362:
case 0x4372:
-
+ /* fall through */
case 0x4303:
case 0x4313:
case 0x4323:
@@ -2383,7 +2373,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4353:
case 0x4363:
case 0x4373:
-
+ /* fall through */
case 0x4304:
case 0x4314:
case 0x4324:
@@ -2392,7 +2382,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4354:
case 0x4364:
case 0x4374:
-
+ /* fall through */
case 0x4305:
case 0x4315:
case 0x4325:
@@ -2401,7 +2391,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4355:
case 0x4365:
case 0x4375:
-
+ /* fall through */
case 0x4306:
case 0x4316:
case 0x4326:
@@ -2410,6 +2400,17 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4356:
case 0x4366:
case 0x4376:
+ return (Memory.FillRAM[Address]);
+
+ case 0x4307:
+ case 0x4317:
+ case 0x4327:
+ case 0x4337:
+ case 0x4347:
+ case 0x4357:
+ case 0x4367:
+ case 0x4377:
+ return (DMA[(Address >> 4) & 7].IndirectBank);
case 0x4308:
case 0x4318:
@@ -2419,7 +2420,7 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4358:
case 0x4368:
case 0x4378:
-
+ /* fall through */
case 0x4309:
case 0x4319:
case 0x4329:
@@ -2430,16 +2431,6 @@ uint8 S9xGetCPU (uint16 Address)
case 0x4379:
return (Memory.FillRAM[Address]);
- case 0x4307:
- case 0x4317:
- case 0x4327:
- case 0x4337:
- case 0x4347:
- case 0x4357:
- case 0x4367:
- case 0x4377:
- return (DMA[(Address >> 4) & 7].IndirectBank);
-
case 0x430A:
case 0x431A:
case 0x432A:
@@ -2515,7 +2506,6 @@ static void CommonPPUReset ()
PPU.VMA.High = 0;
PPU.VMA.Increment = 1;
PPU.VMA.Address = 0;
-
PPU.VMA.FullGraphicCount = 0;
PPU.VMA.Shift = 0;
@@ -2539,11 +2529,13 @@ static void CommonPPUReset ()
PPU.ClipCounts[4] = 0;
PPU.ClipCounts[5] = 0;
PPU.ClipWindowOverlapLogic[4] = PPU.ClipWindowOverlapLogic[5] = CLIP_OR;
- PPU.ClipWindow1Enable[4] = PPU.ClipWindow1Enable[5] = PPU.ClipWindow2Enable[4] = PPU.ClipWindow2Enable[5] = FALSE;
- PPU.ClipWindow1Inside[4] = PPU.ClipWindow1Inside[5] = PPU.ClipWindow2Inside[4] = PPU.ClipWindow2Inside[5] = TRUE;
+ PPU.ClipWindow1Enable[4] = PPU.ClipWindow1Enable[5] = FALSE;
+ PPU.ClipWindow2Enable[4] = PPU.ClipWindow2Enable[5] = FALSE;
+ PPU.ClipWindow1Inside[4] = PPU.ClipWindow1Inside[5] = TRUE;
+ PPU.ClipWindow2Inside[4] = PPU.ClipWindow2Inside[5] = TRUE;
PPU.CGFLIP = 0;
- uint16 c;
+ int c;
for (c = 0; c < 256; c++)
{
IPPU.Red [c] = (c & 7) << 2;
@@ -2588,7 +2580,6 @@ static void CommonPPUReset ()
PPU.MatrixA = PPU.MatrixB = PPU.MatrixC = PPU.MatrixD = 0;
PPU.CentreX = PPU.CentreY = 0;
-
PPU.CGADD = 0;
PPU.FixedColourRed = PPU.FixedColourGreen = PPU.FixedColourBlue = 0;
PPU.SavedOAMAddr = 0;
@@ -2609,9 +2600,9 @@ static void CommonPPUReset ()
PPU.VTimerEnabled = FALSE;
PPU.HTimerEnabled = FALSE;
PPU.HTimerPosition = Settings.H_Max + 1;
-
PPU.Mosaic = 0;
- PPU.BGMosaic [0] = PPU.BGMosaic [1] = PPU.BGMosaic [2] = PPU.BGMosaic [3] = FALSE;
+ PPU.BGMosaic [0] = PPU.BGMosaic [1] = FALSE;
+ PPU.BGMosaic [2] = PPU.BGMosaic [3] = FALSE;
PPU.Mode7HFlip = FALSE;
PPU.Mode7VFlip = FALSE;
PPU.Mode7Repeat = 0;
@@ -2620,7 +2611,6 @@ static void CommonPPUReset ()
PPU.Window2Left = 1;
PPU.Window2Right = 0;
PPU.RecomputeClipWindows = TRUE;
-
PPU.CGFLIPRead = 0;
PPU.Need16x8Mulitply = FALSE;
PPU.MouseSpeed[0] = PPU.MouseSpeed[1] = 0;
@@ -2638,7 +2628,6 @@ static void CommonPPUReset ()
IPPU.DisplayedRenderedFrameCount = 0;
IPPU.SkippedFrames = 0;
IPPU.FrameSkip = 0;
-
ZeroMemory (IPPU.TileCached [TILE_2BIT], MAX_2BIT_TILES);
ZeroMemory (IPPU.TileCached [TILE_4BIT], MAX_4BIT_TILES);
ZeroMemory (IPPU.TileCached [TILE_8BIT], MAX_8BIT_TILES);
@@ -2654,7 +2643,6 @@ static void CommonPPUReset ()
IPPU.RenderedScreenWidth = SNES_WIDTH;
IPPU.RenderedScreenHeight = SNES_HEIGHT;
IPPU.XB = NULL;
-
for (c = 0; c < 256; c++)
IPPU.ScreenColors [c] = c;
S9xFixColourBrightness ();
@@ -2674,14 +2662,6 @@ static void CommonPPUReset ()
S9xProcessMouse (0);
S9xProcessMouse (1);
}
-
- ZeroMemory (&Memory.FillRAM [0x2100], 0x100);
- ZeroMemory (&Memory.FillRAM [0x4200], 0x100);
- ZeroMemory (&Memory.FillRAM [0x4000], 0x100);
- // For BS Suttehakkun 2...
- ZeroMemory (&Memory.FillRAM [0x1000], 0x1000);
-
- Memory.FillRAM[0x4201]=Memory.FillRAM[0x4213]=0xFF;
}
void S9xResetPPU ()
@@ -2698,7 +2678,7 @@ void S9xResetPPU ()
IPPU.PrevMouseX[0] = IPPU.PrevMouseX[1] = 256 / 2;
IPPU.PrevMouseY[0] = IPPU.PrevMouseY[1] = 224 / 2;
- for (uint16 c = 0; c < 0x8000; c += 0x100)
+ for (int c = 0; c < 0x8000; c += 0x100)
{
if ( !Settings.SuperFX )
{
@@ -2712,6 +2692,14 @@ void S9xResetPPU ()
memset (&Memory.FillRAM [c], c >> 8, 0x100);
}
}
+
+ ZeroMemory (&Memory.FillRAM [0x2100], 0x100);
+ ZeroMemory (&Memory.FillRAM [0x4200], 0x100);
+ ZeroMemory (&Memory.FillRAM [0x4000], 0x100);
+ // For BS Suttehakkun 2...
+ ZeroMemory (&Memory.FillRAM [0x1000], 0x1000);
+
+ Memory.FillRAM[0x4201]=Memory.FillRAM[0x4213]=0xFF;
}
void S9xSoftResetPPU ()
@@ -2728,8 +2716,16 @@ void S9xSoftResetPPU ()
// IPPU.PrevMouseX[0] = IPPU.PrevMouseX[1] = 256 / 2;
// IPPU.PrevMouseY[0] = IPPU.PrevMouseY[1] = 224 / 2;
- for (uint16 c = 0; c < 0x8000; c += 0x100)
+ for (int c = 0; c < 0x8000; c += 0x100)
memset (&Memory.FillRAM [c], c >> 8, 0x100);
+
+ ZeroMemory (&Memory.FillRAM [0x2100], 0x100);
+ ZeroMemory (&Memory.FillRAM [0x4200], 0x100);
+ ZeroMemory (&Memory.FillRAM [0x4000], 0x100);
+ // For BS Suttehakkun 2...
+ ZeroMemory (&Memory.FillRAM [0x1000], 0x1000);
+
+ Memory.FillRAM[0x4201]=Memory.FillRAM[0x4213]=0xFF;
}
void S9xProcessMouse (int which1)
@@ -3007,7 +3003,7 @@ void S9xUpdateJoypads ()
// from each line.
// If, initially, the key is NOT pressed, one line of it being
// pressed means that the key MUST be pressed.
- // Otherwise, the key MUST be pressed if it doesn't start as such.
+ // Otherwise, the key MUST be depressed if it starts pressed.
for (j = 1; j < (Settings.PAL ? SNES_MAX_PAL_VCOUNTER : SNES_MAX_NTSC_VCOUNTER); j++)
{
if ((StartedPressed) && ((IPPU.JoypadsAtHBlanks[i][j] & k) == 0)) {
@@ -3295,8 +3291,8 @@ uint8 REGISTER_4212()
void FLUSH_REDRAW ()
{
- if (IPPU.PreviousLine != IPPU.CurrentLine)
- S9xUpdateScreen ();
+ if (IPPU.PreviousLine != IPPU.CurrentLine)
+ S9xUpdateScreen ();
}
void REGISTER_2104 (uint8 byte)
@@ -3526,11 +3522,11 @@ void REGISTER_2122(uint8 Byte)
if (Settings.SixteenBit)
{
#endif
- IPPU.Blue [PPU.CGADD] = IPPU.XB [(Byte >> 2) & 0x1f];
- IPPU.Green [PPU.CGADD] = IPPU.XB [(PPU.CGDATA[PPU.CGADD] >> 5) & 0x1f];
- IPPU.ScreenColors [PPU.CGADD] = (uint16) BUILD_PIXEL (IPPU.Red [PPU.CGADD],
- IPPU.Green [PPU.CGADD],
- IPPU.Blue [PPU.CGADD]);
+ IPPU.Blue [PPU.CGADD] = IPPU.XB [(Byte >> 2) & 0x1f];
+ IPPU.Green [PPU.CGADD] = IPPU.XB [(PPU.CGDATA[PPU.CGADD] >> 5) & 0x1f];
+ IPPU.ScreenColors [PPU.CGADD] = (uint16) BUILD_PIXEL (IPPU.Red [PPU.CGADD],
+ IPPU.Green [PPU.CGADD],
+ IPPU.Blue [PPU.CGADD]);
#ifndef FOREVER_16_BIT
}
#endif
@@ -3552,11 +3548,11 @@ void REGISTER_2122(uint8 Byte)
if (Settings.SixteenBit)
{
#endif
- IPPU.Red [PPU.CGADD] = IPPU.XB [Byte & 0x1f];
- IPPU.Green [PPU.CGADD] = IPPU.XB [(PPU.CGDATA[PPU.CGADD] >> 5) & 0x1f];
- IPPU.ScreenColors [PPU.CGADD] = (uint16) BUILD_PIXEL (IPPU.Red [PPU.CGADD],
- IPPU.Green [PPU.CGADD],
- IPPU.Blue [PPU.CGADD]);
+ IPPU.Red [PPU.CGADD] = IPPU.XB [Byte & 0x1f];
+ IPPU.Green [PPU.CGADD] = IPPU.XB [(PPU.CGDATA[PPU.CGADD] >> 5) & 0x1f];
+ IPPU.ScreenColors [PPU.CGADD] = (uint16) BUILD_PIXEL (IPPU.Red [PPU.CGADD],
+ IPPU.Green [PPU.CGADD],
+ IPPU.Blue [PPU.CGADD]);
#ifndef FOREVER_16_BIT
}
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 10:48:47 +0000