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-rw-r--r--source/ppu.h293
1 files changed, 11 insertions, 282 deletions
diff --git a/source/ppu.h b/source/ppu.h
index 99dde34..5a889ef 100644
--- a/source/ppu.h
+++ b/source/ppu.h
@@ -342,288 +342,17 @@ END_EXTERN_C
#define MAX_5C78_VERSION 0x03
#define MAX_5A22_VERSION 0x02
-STATIC inline uint8 REGISTER_4212()
-{
- 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);
-}
-
-STATIC inline void FLUSH_REDRAW ()
-{
- if (IPPU.PreviousLine != IPPU.CurrentLine)
- S9xUpdateScreen ();
-}
-
-STATIC inline void REGISTER_2104 (uint8 byte)
-{
- if (PPU.OAMAddr & 0x100)
- {
- int 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 lowbyte = (uint8)(PPU.OAMWriteRegister);
- uint8 highbyte = byte;
- PPU.OAMWriteRegister |= byte << 8;
-
- int 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;
-}
-
-STATIC inline void REGISTER_2118 (uint8 Byte)
-{
- uint32 address;
- if (PPU.VMA.FullGraphicCount)
- {
- uint32 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)
- {
-#ifdef DEBUGGER
- if (Settings.TraceVRAM && !CPU.InDMA)
- {
- printf ("VRAM write byte: $%04X (%d,%d)\n", PPU.VMA.Address,
- Memory.FillRAM[0x2115] & 3,
- (Memory.FillRAM [0x2115] & 0x0c) >> 2);
- }
-#endif
- PPU.VMA.Address += PPU.VMA.Increment;
- }
-// Memory.FillRAM [0x2118] = Byte;
-}
-
-STATIC inline void REGISTER_2118_tile (uint8 Byte)
-{
- uint32 address;
- uint32 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;
-// Memory.FillRAM [0x2118] = Byte;
-}
-
-STATIC inline void REGISTER_2118_linear (uint8 Byte)
-{
- uint32 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;
-// Memory.FillRAM [0x2118] = Byte;
-}
-
-STATIC inline void REGISTER_2119 (uint8 Byte)
-{
- uint32 address;
- if (PPU.VMA.FullGraphicCount)
- {
- uint32 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)
- {
-#ifdef DEBUGGER
- if (Settings.TraceVRAM && !CPU.InDMA)
- {
- printf ("VRAM write word: $%04X (%d,%d)\n", PPU.VMA.Address,
- Memory.FillRAM[0x2115] & 3,
- (Memory.FillRAM [0x2115] & 0x0c) >> 2);
- }
-#endif
- PPU.VMA.Address += PPU.VMA.Increment;
- }
-// Memory.FillRAM [0x2119] = Byte;
-}
-
-STATIC inline void REGISTER_2119_tile (uint8 Byte)
-{
- uint32 rem = PPU.VMA.Address & PPU.VMA.Mask1;
- uint32 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;
-// Memory.FillRAM [0x2119] = Byte;
-}
-
-STATIC inline void REGISTER_2119_linear (uint8 Byte)
-{
- uint32 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;
-// Memory.FillRAM [0x2119] = Byte;
-}
-
-STATIC inline void REGISTER_2122(uint8 Byte)
-{
- // CG-RAM (palette) write
-
- if (PPU.CGFLIP)
- {
- if ((Byte & 0x7f) != (PPU.CGDATA[PPU.CGADD] >> 8))
- {
- if (Settings.SixteenBit)
- FLUSH_REDRAW ();
- PPU.CGDATA[PPU.CGADD] &= 0x00FF;
- PPU.CGDATA[PPU.CGADD] |= (Byte & 0x7f) << 8;
- IPPU.ColorsChanged = TRUE;
- if (Settings.SixteenBit)
- {
- 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]);
- }
- }
- PPU.CGADD++;
- }
- else
- {
- if (Byte != (uint8) (PPU.CGDATA[PPU.CGADD] & 0xff))
- {
- if (Settings.SixteenBit)
- FLUSH_REDRAW ();
- PPU.CGDATA[PPU.CGADD] &= 0x7F00;
- PPU.CGDATA[PPU.CGADD] |= Byte;
- IPPU.ColorsChanged = TRUE;
- if (Settings.SixteenBit)
- {
- 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]);
- }
- }
- }
- PPU.CGFLIP ^= 1;
-// Memory.FillRAM [0x2122] = Byte;
-}
-
-STATIC inline void REGISTER_2180(uint8 Byte)
-{
- Memory.RAM[PPU.WRAM++] = Byte;
- PPU.WRAM &= 0x1FFFF;
- Memory.FillRAM [0x2180] = Byte;
-}
-
+extern uint8 REGISTER_4212();
+extern void FLUSH_REDRAW ();
+extern void REGISTER_2104 (uint8 byte);
+extern void REGISTER_2118 (uint8 Byte);
+extern void REGISTER_2118_tile (uint8 Byte);
+extern void REGISTER_2118_linear (uint8 Byte);
+extern void REGISTER_2119 (uint8 Byte);
+extern void REGISTER_2119_tile (uint8 Byte);
+extern void REGISTER_2119_linear (uint8 Byte);
+extern void REGISTER_2122(uint8 Byte);
+extern void REGISTER_2180(uint8 Byte);
//Platform specific input functions used by PPU.CPP
void JustifierButtons(uint32&);
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