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Diffstat (limited to 'source/ppu.c')
-rw-r--r--source/ppu.c406
1 files changed, 31 insertions, 375 deletions
diff --git a/source/ppu.c b/source/ppu.c
index f48800d..167610d 100644
--- a/source/ppu.c
+++ b/source/ppu.c
@@ -4,7 +4,6 @@
#include "memmap.h"
#include "ppu.h"
#include "cpuexec.h"
-#include "missing.h"
#include "apu.h"
#include "dma.h"
#include "display.h"
@@ -12,10 +11,10 @@
#include "sdd1.h"
#include "srtc.h"
#include "spc7110.h"
-
#include "fxemu.h"
#include "fxinst.h"
-extern struct FxInit_s SuperFX;
+
+extern FxInit_s SuperFX;
extern uint8_t mul_brightness [16][32];
uint32_t justifiers = 0xffff00aa;
@@ -28,7 +27,6 @@ void S9xLatchCounters(bool force)
if (!force && !(Memory.FillRAM[0x4213] & 0x80))
return;
- PPU.HVBeamCounterLatched = 1;
PPU.VBeamPosLatched = (uint16_t) CPU.V_Counter;
PPU.HBeamPosLatched = (uint16_t)((CPU.Cycles * SNES_HCOUNTER_MAX) / Settings.H_Max);
@@ -111,7 +109,7 @@ static void S9xSetSuperFX(uint8_t Byte, uint16_t Address)
return;
old_fill_ram = Memory.FillRAM[Address];
- Memory.FillRAM[Address] = Byte;
+ Memory.FillRAM[Address] = Byte;
switch (Address)
{
@@ -176,8 +174,6 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
IPPU.DirectColourMapsNeedRebuild = true;
PPU.Brightness = Byte & 0xF;
S9xFixColourBrightness();
- if (PPU.Brightness > IPPU.MaxBrightness)
- IPPU.MaxBrightness = PPU.Brightness;
}
if ((Memory.FillRAM[0x2100] & 0x80) != (Byte & 0x80))
{
@@ -201,7 +197,6 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
// Sprite write address (low)
PPU.OAMAddr = ((Memory.FillRAM[0x2103] & 1) << 8) | Byte;
PPU.OAMFlip = 2;
- PPU.OAMReadFlip = 0;
PPU.SavedOAMAddr = PPU.OAMAddr;
if (PPU.OAMPriorityRotation && PPU.FirstSprite != (PPU.OAMAddr >> 1))
{
@@ -232,7 +227,6 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
}
}
PPU.OAMFlip = 0;
- PPU.OAMReadFlip = 0;
PPU.SavedOAMAddr = PPU.OAMAddr;
break;
case 0x2104:
@@ -295,8 +289,6 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
PPU.BG[3].NameBase = ((Byte >> 4) & 7) << 12;
}
break;
- //This is the Theme Park fix - it appears all these registers
- //share a previous byte value for setting them.
case 0x210D:
PPU.BG[0].HOffset = (Byte << 8) | PPU.BGnxOFSbyte;
PPU.BGnxOFSbyte = Byte;
@@ -329,7 +321,6 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
PPU.BG[3].VOffset = (Byte << 8) | PPU.BGnxOFSbyte;
PPU.BGnxOFSbyte = Byte;
break;
- //end Theme Park
case 0x2115:
// VRAM byte/word access flag and increment
PPU.VMA.High = (bool) (Byte & 0x80);
@@ -395,12 +386,12 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
case 0x211b:
// Mode 7 matrix A (low & high)
PPU.MatrixA = ((PPU.MatrixA >> 8) & 0xff) | (Byte << 8);
- PPU.Need16x8Mulitply = true;
+ PPU.Need16x8Multiply = true;
break;
case 0x211c:
// Mode 7 matrix B (low & high)
PPU.MatrixB = ((PPU.MatrixB >> 8) & 0xff) | (Byte << 8);
- PPU.Need16x8Mulitply = true;
+ PPU.Need16x8Multiply = true;
break;
case 0x211d:
// Mode 7 matrix C (low & high)
@@ -605,7 +596,6 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
IPPU.OBJChanged = true;
if (PPU.BGMode == 5 || PPU.BGMode == 6)
IPPU.Interlace = (bool) (Byte & 1);
- IPPU.InterlaceSprites = false;
}
}
break;
@@ -702,16 +692,10 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
case 0x217e:
case 0x217f:
#ifndef USE_BLARGG_APU
-#ifdef SPCTOOL
- _SPCInPB(Address & 3, Byte);
-#else
Memory.FillRAM [Address] = Byte;
IAPU.RAM [(Address & 3) + 0xf4] = Byte;
-#ifdef SPC700_SHUTDOWN
IAPU.APUExecuting = Settings.APUEnabled;
IAPU.WaitCounter++;
-#endif
-#endif // SPCTOOL
#else
S9xAPUWritePort(Address & 3, Byte);
#endif // #ifndef USE_BLARGG_APU
@@ -742,7 +726,6 @@ void S9xSetPPU(uint8_t Byte, uint16_t Address)
S9xSetSA1(Byte, Address);
else
Memory.FillRAM [Address] = Byte;
-
return;
}
else
@@ -794,13 +777,13 @@ uint8_t S9xGetPPU(uint16_t Address)
case 0x2135:
case 0x2136:
// 16bit x 8bit multiply read result.
- if (PPU.Need16x8Mulitply)
+ if (PPU.Need16x8Multiply)
{
int32_t r = (int32_t) PPU.MatrixA * (int32_t)(PPU.MatrixB >> 8);
Memory.FillRAM[0x2134] = (uint8_t) r;
Memory.FillRAM[0x2135] = (uint8_t)(r >> 8);
Memory.FillRAM[0x2136] = (uint8_t)(r >> 16);
- PPU.Need16x8Mulitply = false;
+ PPU.Need16x8Multiply = false;
}
return (PPU.OpenBus1 = Memory.FillRAM[Address]);
case 0x2137:
@@ -984,13 +967,9 @@ uint8_t S9xGetPPU(uint16_t Address)
case 0x217e:
case 0x217f:
#ifndef USE_BLARGG_APU
-#ifdef SPCTOOL
- return ((uint8_t) _SPCOutP [Address & 3]);
-#else
-#ifdef SPC700_SHUTDOWN
IAPU.APUExecuting = Settings.APUEnabled;
IAPU.WaitCounter++;
-#endif
+
if (Settings.APUEnabled)
{
if (SNESGameFixes.APU_OutPorts_ReturnValueFix &&
@@ -999,17 +978,9 @@ uint8_t S9xGetPPU(uint16_t Address)
return (APU.OutPorts [Address & 3]);
}
-#endif
- switch (Settings.SoundSkipMethod)
- {
- case 0:
- case 1:
- case 3:
- CPU.BranchSkip = true;
- break;
- case 2:
- break;
- }
+
+ CPU.BranchSkip = true;
+
if ((Address & 3) < 2)
{
int32_t r = rand();
@@ -1028,7 +999,7 @@ uint8_t S9xGetPPU(uint16_t Address)
return ((r >> 3) & 0xff);
}
return (Memory.FillRAM[Address]);
-#else // SPCTOOL
+#else
return (S9xAPUReadPort(Address & 3));
#endif //#ifndef USE_BLARGG_APU
case 0x2180:
@@ -1069,16 +1040,13 @@ uint8_t S9xGetPPU(uint16_t Address)
byte = Memory.FillRAM [Address];
-#ifdef CPU_SHUTDOWN
if (Address == 0x3030)
CPU.WaitAddress = CPU.PCAtOpcodeStart;
- else
-#endif
- if (Address == 0x3031)
- {
- CLEAR_IRQ_SOURCE(GSU_IRQ_SOURCE);
- Memory.FillRAM [0x3031] = byte & 0x7f;
- }
+ else if (Address == 0x3031)
+ {
+ CLEAR_IRQ_SOURCE(GSU_IRQ_SOURCE);
+ Memory.FillRAM [0x3031] = byte & 0x7f;
+ }
return byte;
}
return byte;
@@ -1306,20 +1274,12 @@ void S9xSetCPU(uint8_t byte, uint16_t Address)
// IRQ ocurred flag (reset on read or write)
CLEAR_IRQ_SOURCE(PPU_V_BEAM_IRQ_SOURCE | PPU_H_BEAM_IRQ_SOURCE);
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 0x4212: // v-blank, h-blank and joypad being scanned flags (read-only)
+ case 0x4213: // I/O Port (read-only)
case 0x4214:
- case 0x4215:
- // Quotent of divide (read-only)
- /* fall through */
+ case 0x4215: // Quotent of divide (read-only)
case 0x4216:
- case 0x4217:
- // Multiply product (read-only)
- /* fall through */
+ case 0x4217: // Multiply product (read-only)
case 0x4218:
case 0x4219:
case 0x421a:
@@ -1327,8 +1287,7 @@ void S9xSetCPU(uint8_t byte, uint16_t Address)
case 0x421c:
case 0x421d:
case 0x421e:
- case 0x421f:
- // Joypad values (read-only)
+ case 0x421f: // Joypad values (read-only)
return;
case 0x4300:
case 0x4310:
@@ -1547,11 +1506,7 @@ void S9xSetCPU(uint8_t byte, uint16_t Address)
case 0x4841:
case 0x4842:
if (Settings.SPC7110)
- {
S9xSetSPC7110(byte, Address);
- break;
- }
- default:
break;
}
Memory.FillRAM [Address] = byte;
@@ -1586,13 +1541,8 @@ uint8_t S9xGetCPU(uint16_t Address)
if (Memory.FillRAM [0x4016] & 1)
{
// MultiPlayer5 adaptor is only allowed to be plugged into port 2
- switch (IPPU.Controller)
- {
- case SNES_MULTIPLAYER5:
- return (2);
- case SNES_MOUSE:
- break;
- }
+ if (IPPU.Controller == SNES_MULTIPLAYER5)
+ return 2;
return 0;
}
@@ -1653,24 +1603,18 @@ uint8_t S9xGetCPU(uint16_t Address)
case 0x420f:
return OpenBus;
case 0x4210:
-#ifdef CPU_SHUTDOWN
CPU.WaitAddress = CPU.PCAtOpcodeStart;
-#endif
byte = Memory.FillRAM[0x4210];
- Memory.FillRAM[0x4210] = Model->_5A22;
- //SNEeSe returns 2 for 5A22 version.
+ Memory.FillRAM[0x4210] = Model->_5A22; //SNEeSe returns 2 for 5A22 version.
return ((byte & 0x80) | (OpenBus & 0x70) | Model->_5A22);
case 0x4211:
byte = (CPU.IRQActive & (PPU_V_BEAM_IRQ_SOURCE | PPU_H_BEAM_IRQ_SOURCE)) ? 0x80 : 0;
CLEAR_IRQ_SOURCE(PPU_V_BEAM_IRQ_SOURCE | PPU_H_BEAM_IRQ_SOURCE);
byte |= OpenBus & 0x7f;
-
return (byte);
case 0x4212:
// V-blank, h-blank and joypads being read flags (read-only)
-#ifdef CPU_SHUTDOWN
CPU.WaitAddress = CPU.PCAtOpcodeStart;
-#endif
return (REGISTER_4212() | (OpenBus & 0x3E));
case 0x4213:
// I/O port input - returns 0 wherever $4201 is 0, and 1 elsewhere
@@ -1840,7 +1784,7 @@ static void CommonPPUReset()
PPU.VMA.Shift = 0;
uint8_t B;
- for (B = 0; B != 4; B++)
+ for (B = 0; B < 4; B++)
{
PPU.BG[B].SCBase = 0;
PPU.BG[B].VOffset = 0;
@@ -1849,7 +1793,6 @@ static void CommonPPUReset()
PPU.BG[B].NameBase = 0;
PPU.BG[B].SCSize = 0;
- PPU.ClipCounts[B] = 0;
PPU.ClipWindowOverlapLogic [B] = CLIP_OR;
PPU.ClipWindow1Enable[B] = false;
PPU.ClipWindow2Enable[B] = false;
@@ -1857,8 +1800,6 @@ static void CommonPPUReset()
PPU.ClipWindow2Inside[B] = true;
}
- PPU.ClipCounts[4] = 0;
- PPU.ClipCounts[5] = 0;
PPU.ClipWindowOverlapLogic[4] = PPU.ClipWindowOverlapLogic[5] = CLIP_OR;
PPU.ClipWindow1Enable[4] = PPU.ClipWindow1Enable[5] = false;
PPU.ClipWindow2Enable[4] = PPU.ClipWindow2Enable[5] = false;
@@ -1876,7 +1817,6 @@ static void CommonPPUReset()
}
PPU.FirstSprite = 0;
- PPU.LastSprite = 127;
int32_t Sprite;
for (Sprite = 0; Sprite < 128; Sprite++)
{
@@ -1896,7 +1836,6 @@ static void CommonPPUReset()
PPU.OpenBus2 = 0;
PPU.OAMFlip = 0;
- PPU.OAMTileAddress = 0;
PPU.OAMAddr = 0;
PPU.IRQVBeamPos = 0;
PPU.IRQHBeamPos = 0;
@@ -1905,7 +1844,6 @@ static void CommonPPUReset()
PPU.HBeamFlip = 0;
PPU.VBeamFlip = 0;
- PPU.HVBeamCounterLatched = 0;
PPU.MatrixA = PPU.MatrixB = PPU.MatrixC = PPU.MatrixD = 0;
PPU.CentreX = PPU.CentreY = 0;
@@ -1914,12 +1852,10 @@ static void CommonPPUReset()
PPU.SavedOAMAddr = 0;
PPU.ScreenHeight = SNES_HEIGHT;
PPU.WRAM = 0;
- PPU.BG_Forced = 0;
PPU.ForcedBlanking = true;
PPU.OBJSizeSelect = 0;
PPU.OBJNameSelect = 0;
PPU.OBJNameBase = 0;
- PPU.OAMReadFlip = 0;
PPU.BGnxOFSbyte = 0;
memset(PPU.OAMData, 0, 512 + 32);
@@ -1938,28 +1874,19 @@ static void CommonPPUReset()
PPU.Window2Right = 0;
PPU.RecomputeClipWindows = true;
PPU.CGFLIPRead = false;
- PPU.Need16x8Mulitply = false;
- PPU.MouseSpeed[0] = PPU.MouseSpeed[1] = 0;
+ PPU.Need16x8Multiply = false;
IPPU.ColorsChanged = true;
IPPU.HDMA = 0;
- IPPU.HDMAStarted = false;
- IPPU.MaxBrightness = 0;
- IPPU.LatchedBlanking = false;
IPPU.OBJChanged = true;
IPPU.RenderThisFrame = true;
IPPU.DirectColourMapsNeedRebuild = true;
IPPU.FrameCount = 0;
- IPPU.RenderedFramesCount = 0;
- IPPU.DisplayedRenderedFrameCount = 0;
- IPPU.SkippedFrames = 0;
- IPPU.FrameSkip = 0;
memset(IPPU.TileCached [TILE_2BIT], 0, MAX_2BIT_TILES);
memset(IPPU.TileCached [TILE_4BIT], 0, MAX_4BIT_TILES);
memset(IPPU.TileCached [TILE_8BIT], 0, MAX_8BIT_TILES);
IPPU.FirstVRAMRead = false;
IPPU.Interlace = false;
- IPPU.InterlaceSprites = false;
IPPU.DoubleWidthPixels = false;
IPPU.HalfWidthPixels = false;
IPPU.DoubleHeightPixels = false;
@@ -1978,7 +1905,7 @@ static void CommonPPUReset()
S9xNextController();
for (c = 0; c < 2; c++)
- memset(&IPPU.Clip [c], 0, sizeof(struct ClipData));
+ memset(&IPPU.Clip [c], 0, sizeof(ClipData));
if (Settings.MouseMaster)
{
@@ -2050,9 +1977,7 @@ void S9xProcessMouse(int32_t which1)
{
int32_t delta_x, delta_y;
#define MOUSE_SIGNATURE 0x1
- IPPU.Mouse [which1] = MOUSE_SIGNATURE |
- (PPU.MouseSpeed [which1] << 4) |
- ((buttons & 1) << 6) | ((buttons & 2) << 6);
+ IPPU.Mouse [which1] = MOUSE_SIGNATURE | ((buttons & 1) << 6) | ((buttons & 2) << 6);
delta_x = x - IPPU.PrevMouseX[which1];
delta_y = y - IPPU.PrevMouseY[which1];
@@ -2131,7 +2056,6 @@ void ProcessSuperScope()
PPU.VBeamPosLatched = (uint16_t)(y + 1);
PPU.HBeamPosLatched = (uint16_t) x;
- PPU.HVBeamCounterLatched = true;
Memory.FillRAM [0x213F] |= 0x40 | Model->_5C78;
}
IPPU.Joypads [1] = scope;
@@ -2215,8 +2139,6 @@ void S9xUpdateJustifiers()
if (last_p1)
{
-
- PPU.HVBeamCounterLatched = false;
Memory.FillRAM [0x213F] = Model->_5C78;
//process latch as Justifier 2
@@ -2226,10 +2148,8 @@ void S9xUpdateJustifiers()
{
if (!offscreen)
{
-
PPU.VBeamPosLatched = (uint16_t)(y + 1);
PPU.HBeamPosLatched = (uint16_t) x;
- PPU.HVBeamCounterLatched = true;
Memory.FillRAM [0x213F] |= 0x40 | Model->_5C78;
}
}
@@ -2237,8 +2157,6 @@ void S9xUpdateJustifiers()
}
else
{
-
- PPU.HVBeamCounterLatched = false;
Memory.FillRAM [0x213F] = Model->_5C78;
//emulate player 1.
@@ -2248,7 +2166,6 @@ void S9xUpdateJustifiers()
{
PPU.VBeamPosLatched = (uint16_t)(y + 1);
PPU.HBeamPosLatched = (uint16_t) x;
- PPU.HVBeamCounterLatched = true;
Memory.FillRAM [0x213F] |= 0x40 | Model->_5C78;
}
}
@@ -2257,27 +2174,18 @@ void S9xUpdateJustifiers()
//needs restructure
if (!offscreen)
{
-
if ((!last_p1 && IPPU.Controller == SNES_JUSTIFIER) || (last_p1
&& IPPU.Controller == SNES_JUSTIFIER_2))
{
PPU.VBeamPosLatched = (uint16_t)(y + 1);
PPU.HBeamPosLatched = (uint16_t) x;
- PPU.HVBeamCounterLatched = true;
Memory.FillRAM [0x213F] |= 0x40 | Model->_5C78;
}
else
- {
- PPU.HVBeamCounterLatched = false;
Memory.FillRAM [0x213F] = Model->_5C78;
-
- }
}
else
- {
- PPU.HVBeamCounterLatched = false;
Memory.FillRAM [0x213F] = Model->_5C78;
- }
}
}
@@ -2289,11 +2197,9 @@ void S9xUpdateJoypads()
{
IPPU.Joypads [i] = S9xReadJoypad(i);
- if ((IPPU.Joypads [i] & (SNES_LEFT_MASK | SNES_RIGHT_MASK)) ==
- (SNES_LEFT_MASK | SNES_RIGHT_MASK))
+ if (IPPU.Joypads [i] & SNES_LEFT_MASK)
IPPU.Joypads [i] &= ~SNES_RIGHT_MASK;
- if ((IPPU.Joypads [i] & (SNES_UP_MASK | SNES_DOWN_MASK)) ==
- (SNES_UP_MASK | SNES_DOWN_MASK))
+ if (IPPU.Joypads [i] & SNES_UP_MASK)
IPPU.Joypads [i] &= ~SNES_DOWN_MASK;
}
@@ -2357,7 +2263,6 @@ void S9xUpdateJoypads()
}
}
-
void S9xSuperFXExec()
{
if (Settings.SuperFX)
@@ -2374,252 +2279,3 @@ void S9xSuperFXExec()
}
}
}
-
-// Register reads and writes...
-
-uint8_t REGISTER_4212()
-{
- uint8_t GetBank = 0;
- if (CPU.V_Counter >= PPU.ScreenHeight + FIRST_VISIBLE_LINE &&
- CPU.V_Counter < PPU.ScreenHeight + FIRST_VISIBLE_LINE + 3)
- GetBank = 1;
-
- GetBank |= CPU.Cycles >= Settings.HBlankStart ? 0x40 : 0;
- if (CPU.V_Counter >= PPU.ScreenHeight + FIRST_VISIBLE_LINE)
- GetBank |= 0x80; /* XXX: 0x80 or 0xc0 ? */
-
- return (GetBank);
-}
-
-void FLUSH_REDRAW()
-{
- if (IPPU.PreviousLine != IPPU.CurrentLine)
- S9xUpdateScreen();
-}
-
-void REGISTER_2104(uint8_t byte)
-{
- if (PPU.OAMAddr & 0x100)
- {
- int32_t addr = ((PPU.OAMAddr & 0x10f) << 1) + (PPU.OAMFlip & 1);
- if (byte != PPU.OAMData [addr])
- {
- FLUSH_REDRAW();
- PPU.OAMData [addr] = byte;
- IPPU.OBJChanged = true;
-
- // X position high bit, and sprite size (x4)
- struct SOBJ* pObj = &PPU.OBJ [(addr & 0x1f) * 4];
-
- pObj->HPos = (pObj->HPos & 0xFF) | SignExtend[(byte >> 0) & 1];
- pObj++->Size = byte & 2;
- pObj->HPos = (pObj->HPos & 0xFF) | SignExtend[(byte >> 2) & 1];
- pObj++->Size = byte & 8;
- pObj->HPos = (pObj->HPos & 0xFF) | SignExtend[(byte >> 4) & 1];
- pObj++->Size = byte & 32;
- pObj->HPos = (pObj->HPos & 0xFF) | SignExtend[(byte >> 6) & 1];
- pObj->Size = byte & 128;
- }
- PPU.OAMFlip ^= 1;
- if (!(PPU.OAMFlip & 1))
- {
- ++PPU.OAMAddr;
- PPU.OAMAddr &= 0x1ff;
- if (PPU.OAMPriorityRotation && PPU.FirstSprite != (PPU.OAMAddr >> 1))
- {
- PPU.FirstSprite = (PPU.OAMAddr & 0xFE) >> 1;
- IPPU.OBJChanged = true;
- }
- }
- else if (PPU.OAMPriorityRotation && (PPU.OAMAddr & 1))
- IPPU.OBJChanged = true;
- }
- else if (!(PPU.OAMFlip & 1))
- {
- PPU.OAMWriteRegister &= 0xff00;
- PPU.OAMWriteRegister |= byte;
- PPU.OAMFlip |= 1;
- if (PPU.OAMPriorityRotation && (PPU.OAMAddr & 1))
- IPPU.OBJChanged = true;
- }
- else
- {
- PPU.OAMWriteRegister &= 0x00ff;
- uint8_t lowbyte = (uint8_t)(PPU.OAMWriteRegister);
- uint8_t highbyte = byte;
- PPU.OAMWriteRegister |= byte << 8;
-
- int32_t addr = (PPU.OAMAddr << 1);
-
- if (lowbyte != PPU.OAMData [addr] ||
- highbyte != PPU.OAMData [addr + 1])
- {
- FLUSH_REDRAW();
- PPU.OAMData [addr] = lowbyte;
- PPU.OAMData [addr + 1] = highbyte;
- IPPU.OBJChanged = true;
- if (addr & 2)
- {
- // Tile
- PPU.OBJ[addr = PPU.OAMAddr >> 1].Name = PPU.OAMWriteRegister & 0x1ff;
-
- // priority, h and v flip.
- PPU.OBJ[addr].Palette = (highbyte >> 1) & 7;
- PPU.OBJ[addr].Priority = (highbyte >> 4) & 3;
- PPU.OBJ[addr].HFlip = (highbyte >> 6) & 1;
- PPU.OBJ[addr].VFlip = (highbyte >> 7) & 1;
- }
- else
- {
- // X position (low)
- PPU.OBJ[addr = PPU.OAMAddr >> 1].HPos &= 0xFF00;
- PPU.OBJ[addr].HPos |= lowbyte;
-
- // Sprite Y position
- PPU.OBJ[addr].VPos = highbyte;
- }
- }
- PPU.OAMFlip &= ~1;
- ++PPU.OAMAddr;
- if (PPU.OAMPriorityRotation && PPU.FirstSprite != (PPU.OAMAddr >> 1))
- {
- PPU.FirstSprite = (PPU.OAMAddr & 0xFE) >> 1;
- IPPU.OBJChanged = true;
- }
- }
-
- Memory.FillRAM [0x2104] = byte;
-}
-
-void REGISTER_2118(uint8_t Byte)
-{
- uint32_t address;
- if (PPU.VMA.FullGraphicCount)
- {
- uint32_t rem = PPU.VMA.Address & PPU.VMA.Mask1;
- address = (((PPU.VMA.Address & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3)) << 1) & 0xffff;
- Memory.VRAM [address] = Byte;
- }
- else
- Memory.VRAM[address = (PPU.VMA.Address << 1) & 0xFFFF] = Byte;
- IPPU.TileCached [TILE_2BIT][address >> 4] = false;
- IPPU.TileCached [TILE_4BIT][address >> 5] = false;
- IPPU.TileCached [TILE_8BIT][address >> 6] = false;
- if (!PPU.VMA.High)
- PPU.VMA.Address += PPU.VMA.Increment;
-}
-
-void REGISTER_2118_tile(uint8_t Byte)
-{
- uint32_t address;
- uint32_t rem = PPU.VMA.Address & PPU.VMA.Mask1;
- address = (((PPU.VMA.Address & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3)) << 1) & 0xffff;
- Memory.VRAM [address] = Byte;
- IPPU.TileCached [TILE_2BIT][address >> 4] = false;
- IPPU.TileCached [TILE_4BIT][address >> 5] = false;
- IPPU.TileCached [TILE_8BIT][address >> 6] = false;
- if (!PPU.VMA.High)
- PPU.VMA.Address += PPU.VMA.Increment;
-}
-
-void REGISTER_2118_linear(uint8_t Byte)
-{
- uint32_t address;
- Memory.VRAM[address = (PPU.VMA.Address << 1) & 0xFFFF] = Byte;
- IPPU.TileCached [TILE_2BIT][address >> 4] = false;
- IPPU.TileCached [TILE_4BIT][address >> 5] = false;
- IPPU.TileCached [TILE_8BIT][address >> 6] = false;
- if (!PPU.VMA.High)
- PPU.VMA.Address += PPU.VMA.Increment;
-}
-
-void REGISTER_2119(uint8_t Byte)
-{
- uint32_t address;
- if (PPU.VMA.FullGraphicCount)
- {
- uint32_t rem = PPU.VMA.Address & PPU.VMA.Mask1;
- address = ((((PPU.VMA.Address & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3)) << 1) + 1) & 0xFFFF;
- Memory.VRAM [address] = Byte;
- }
- else
- Memory.VRAM[address = ((PPU.VMA.Address << 1) + 1) & 0xFFFF] = Byte;
- IPPU.TileCached [TILE_2BIT][address >> 4] = false;
- IPPU.TileCached [TILE_4BIT][address >> 5] = false;
- IPPU.TileCached [TILE_8BIT][address >> 6] = false;
- if (PPU.VMA.High)
- PPU.VMA.Address += PPU.VMA.Increment;
-}
-
-void REGISTER_2119_tile(uint8_t Byte)
-{
- uint32_t rem = PPU.VMA.Address & PPU.VMA.Mask1;
- uint32_t address = ((((PPU.VMA.Address & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3)) << 1) + 1) & 0xFFFF;
- Memory.VRAM [address] = Byte;
- IPPU.TileCached [TILE_2BIT][address >> 4] = false;
- IPPU.TileCached [TILE_4BIT][address >> 5] = false;
- IPPU.TileCached [TILE_8BIT][address >> 6] = false;
- if (PPU.VMA.High)
- PPU.VMA.Address += PPU.VMA.Increment;
-}
-
-void REGISTER_2119_linear(uint8_t Byte)
-{
- uint32_t address;
- Memory.VRAM[address = ((PPU.VMA.Address << 1) + 1) & 0xFFFF] = Byte;
- IPPU.TileCached [TILE_2BIT][address >> 4] = false;
- IPPU.TileCached [TILE_4BIT][address >> 5] = false;
- IPPU.TileCached [TILE_8BIT][address >> 6] = false;
- if (PPU.VMA.High)
- PPU.VMA.Address += PPU.VMA.Increment;
-}
-
-void REGISTER_2122(uint8_t Byte)
-{
- // CG-RAM (palette) write
-
- if (PPU.CGFLIP)
- {
- if ((Byte & 0x7f) != (PPU.CGDATA[PPU.CGADD] >> 8))
- {
- FLUSH_REDRAW();
- PPU.CGDATA[PPU.CGADD] &= 0x00FF;
- PPU.CGDATA[PPU.CGADD] |= (Byte & 0x7f) << 8;
- IPPU.ColorsChanged = true;
- 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_t) BUILD_PIXEL(IPPU.Red [PPU.CGADD],
- IPPU.Green [PPU.CGADD],
- IPPU.Blue [PPU.CGADD]);
- }
- PPU.CGADD++;
- }
- else if (Byte != (uint8_t)(PPU.CGDATA[PPU.CGADD] & 0xff))
- {
- FLUSH_REDRAW();
- PPU.CGDATA[PPU.CGADD] &= 0x7F00;
- PPU.CGDATA[PPU.CGADD] |= Byte;
- IPPU.ColorsChanged = true;
- 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_t) BUILD_PIXEL(IPPU.Red [PPU.CGADD],
- IPPU.Green [PPU.CGADD],
- IPPU.Blue [PPU.CGADD]);
- }
- PPU.CGFLIP = !PPU.CGFLIP;
-}
-
-void REGISTER_2180(uint8_t Byte)
-{
- Memory.RAM[PPU.WRAM++] = Byte;
- PPU.WRAM &= 0x1FFFF;
- Memory.FillRAM [0x2180] = Byte;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 02:54:17 +0000