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-/*******************************************************************************
- Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
-
- (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
- Jerremy Koot (jkoot@snes9x.com)
-
- (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net)
-
- (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),
- funkyass (funkyass@spam.shaw.ca),
- Joel Yliluoma (http://iki.fi/bisqwit/)
- Kris Bleakley (codeviolation@hotmail.com),
- Matthew Kendora,
- Nach (n-a-c-h@users.sourceforge.net),
- Peter Bortas (peter@bortas.org) and
- zones (kasumitokoduck@yahoo.com)
-
- C4 x86 assembler and some C emulation code
- (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
- _Demo_ (_demo_@zsnes.com), and Nach
-
- C4 C++ code
- (c) Copyright 2003 Brad Jorsch
-
- DSP-1 emulator code
- (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
- John Weidman, neviksti (neviksti@hotmail.com),
- Kris Bleakley, Andreas Naive
-
- DSP-2 emulator code
- (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
- Lord Nightmare (lord_nightmare@users.sourceforge.net
-
- OBC1 emulator code
- (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and
- Kris Bleakley
- Ported from x86 assembler to C by sanmaiwashi
-
- SPC7110 and RTC C++ emulator code
- (c) Copyright 2002 Matthew Kendora with research by
- zsKnight, John Weidman, and Dark Force
-
- S-DD1 C emulator code
- (c) Copyright 2003 Brad Jorsch with research by
- Andreas Naive and John Weidman
-
- S-RTC C emulator code
- (c) Copyright 2001 John Weidman
-
- ST010 C++ emulator code
- (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora
-
- Super FX x86 assembler emulator code
- (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault
-
- Super FX C emulator code
- (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman
-
-
- SH assembler code partly based on x86 assembler code
- (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
-
-
- Specific ports contains the works of other authors. See headers in
- individual files.
-
- Snes9x homepage: http://www.snes9x.com
-
- Permission to use, copy, modify and distribute Snes9x in both binary and
- source form, for non-commercial purposes, is hereby granted without fee,
- providing that this license information and copyright notice appear with
- all copies and any derived work.
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event shall the authors be held liable for any damages
- arising from the use of this software.
-
- Snes9x is freeware for PERSONAL USE only. Commercial users should
- seek permission of the copyright holders first. Commercial use includes
- charging money for Snes9x or software derived from Snes9x.
-
- The copyright holders request that bug fixes and improvements to the code
- should be forwarded to them so everyone can benefit from the modifications
- in future versions.
-
- Super NES and Super Nintendo Entertainment System are trademarks of
- Nintendo Co., Limited and its subsidiary companies.
-*******************************************************************************/
-
-#include "snes9x.h"
-#include "memmap.h"
-#include "ppu.h"
-#include "cpuexec.h"
-#include "missing.h"
-#include "apu.h"
-#include "dma.h"
-#include "gfx.h"
-#include "display.h"
-#include "sa1.h"
-#include "sdd1.h"
-#include "srtc.h"
-#include "spc7110.h"
-
-#ifndef ZSNES_FX
-#include "fxemu.h"
-#include "fxinst.h"
-extern struct FxInit_s SuperFX;
-#else
-EXTERN_C void S9xSuperFXWriteReg (uint8, uint32);
-EXTERN_C uint8 S9xSuperFXReadReg (uint32);
-#endif
-
-uint32 justifiers=0xFFFF00AA;
-uint8 in_bit=0;
-
-extern uint8 *HDMAMemPointers [8];
-
-void S9xLatchCounters (bool force)
-{
- if(!force && !(Memory.FillRAM[0x4213] & 0x80)) return;
-
-#if 0
-# ifdef CPU_SHUTDOWN
- CPU.WaitAddress = CPU.PCAtOpcodeStart;
-# endif
-#endif
- PPU.HVBeamCounterLatched = 1;
- PPU.VBeamPosLatched = (uint16) CPU.V_Counter;
- PPU.HBeamPosLatched = (uint16) ((CPU.Cycles * SNES_HCOUNTER_MAX) / Settings.H_Max);
-
- // Causes screen flicker for Yoshi's Island if uncommented
- //CLEAR_IRQ_SOURCE (PPU_V_BEAM_IRQ_SOURCE | PPU_H_BEAM_IRQ_SOURCE);
-
- Memory.FillRAM [0x213F] |= 0x40;
-}
-
-void S9xUpdateJustifiers();
-
-void S9xUpdateHTimer ()
-{
- if (PPU.HTimerEnabled)
- {
- PPU.HTimerPosition = PPU.IRQHBeamPos * Settings.H_Max / SNES_HCOUNTER_MAX;
- if (PPU.HTimerPosition == Settings.H_Max ||
- PPU.HTimerPosition == Settings.HBlankStart)
- {
- PPU.HTimerPosition--;
- }
-
- if (!PPU.VTimerEnabled || CPU.V_Counter == PPU.IRQVBeamPos)
- {
- if (PPU.HTimerPosition < CPU.Cycles)
- {
- // Missed the IRQ on this line already
- if (CPU.WhichEvent == HBLANK_END_EVENT ||
- CPU.WhichEvent == HTIMER_AFTER_EVENT)
- {
- CPU.WhichEvent = HBLANK_END_EVENT;
- CPU.NextEvent = Settings.H_Max;
- }
- else
- {
- CPU.WhichEvent = HBLANK_START_EVENT;
- CPU.NextEvent = Settings.HBlankStart;
- }
- }
- else
- {
- if (CPU.WhichEvent == HTIMER_BEFORE_EVENT ||
- CPU.WhichEvent == HBLANK_START_EVENT)
- {
- if (PPU.HTimerPosition > Settings.HBlankStart)
- {
- // HTimer was to trigger before h-blank start,
- // now triggers after start of h-blank
- CPU.NextEvent = Settings.HBlankStart;
- CPU.WhichEvent = HBLANK_START_EVENT;
- }
- else
- {
- CPU.NextEvent = PPU.HTimerPosition;
- CPU.WhichEvent = HTIMER_BEFORE_EVENT;
- }
- }
- else
- {
- CPU.WhichEvent = HTIMER_AFTER_EVENT;
- CPU.NextEvent = PPU.HTimerPosition;
- }
- }
- }
- }
-}
-
-void S9xFixColourBrightness ()
-{
- IPPU.XB = mul_brightness [PPU.Brightness];
- for (int i = 0; i < 256; i++)
- {
- IPPU.Red [i] = IPPU.XB [PPU.CGDATA [i] & 0x1f];
- IPPU.Green [i] = IPPU.XB [(PPU.CGDATA [i] >> 5) & 0x1f];
- IPPU.Blue [i] = IPPU.XB [(PPU.CGDATA [i] >> 10) & 0x1f];
- IPPU.ScreenColors [i] = BUILD_PIXEL (IPPU.Red [i], IPPU.Green [i],
- IPPU.Blue [i]);
- }
-}
-
-/******************************************************************************/
-/* S9xSetPPU() */
-/* This function sets a PPU Register to a specific byte */
-/******************************************************************************/
-void S9xSetPPU (uint8 Byte, uint16 Address)
-{
-// fprintf(stderr, "%03d: %02x to %04x\n", CPU.V_Counter, Byte, Address);
- if (Address <= 0x2183)
- {
- switch (Address)
- {
- case 0x2100:
- // Brightness and screen blank bit
- if (Byte != Memory.FillRAM [0x2100])
- {
- FLUSH_REDRAW ();
- if (PPU.Brightness != (Byte & 0xF))
- {
- IPPU.ColorsChanged = TRUE;
- IPPU.DirectColourMapsNeedRebuild = TRUE;
- PPU.Brightness = Byte & 0xF;
- S9xFixColourBrightness ();
- if (PPU.Brightness > IPPU.MaxBrightness)
- IPPU.MaxBrightness = PPU.Brightness;
- }
- if ((Memory.FillRAM[0x2100] & 0x80) != (Byte & 0x80))
- {
- IPPU.ColorsChanged = TRUE;
- PPU.ForcedBlanking = (Byte >> 7) & 1;
- }
- }
- break;
-
- case 0x2101:
- // Sprite (OBJ) tile address
- if (Byte != Memory.FillRAM [0x2101])
- {
- FLUSH_REDRAW ();
- PPU.OBJNameBase = (Byte & 3) << 14;
- PPU.OBJNameSelect = ((Byte >> 3) & 3) << 13;
- PPU.OBJSizeSelect = (Byte >> 5) & 7;
- IPPU.OBJChanged = TRUE;
- }
- break;
-
- case 0x2102:
- // 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))
- {
- PPU.FirstSprite = (PPU.OAMAddr&0xFE) >> 1;
- IPPU.OBJChanged = TRUE;
- }
- break;
-
- case 0x2103:
- // Sprite register write address (high), sprite priority rotation
- // bit.
- PPU.OAMAddr = ((Byte&1)<<8) | Memory.FillRAM[0x2102];
-
- PPU.OAMPriorityRotation=(Byte & 0x80)? 1 : 0;
- if (PPU.OAMPriorityRotation)
- {
- if (PPU.FirstSprite != (PPU.OAMAddr >> 1))
- {
- PPU.FirstSprite = (PPU.OAMAddr&0xFE) >> 1;
- IPPU.OBJChanged = TRUE;
- }
- } else {
- if (PPU.FirstSprite != 0)
- {
- PPU.FirstSprite = 0;
- IPPU.OBJChanged = TRUE;
- }
- }
- PPU.OAMFlip = 0;
- PPU.OAMReadFlip = 0;
- PPU.SavedOAMAddr = PPU.OAMAddr;
- break;
-
- case 0x2104:
- // Sprite register write
- REGISTER_2104(Byte);
- break;
-
- case 0x2105:
- // Screen mode (0 - 7), background tile sizes and background 3
- // priority
- if (Byte != Memory.FillRAM [0x2105])
- {
- FLUSH_REDRAW ();
- PPU.BG[0].BGSize = (Byte >> 4) & 1;
- PPU.BG[1].BGSize = (Byte >> 5) & 1;
- PPU.BG[2].BGSize = (Byte >> 6) & 1;
- PPU.BG[3].BGSize = (Byte >> 7) & 1;
- PPU.BGMode = Byte & 7;
- // BJ: BG3Priority only takes effect if BGMode==1 and the bit is set
- PPU.BG3Priority = ((Byte & 0x0f) == 0x09);
- if(PPU.BGMode==5||PPU.BGMode==6)
- IPPU.Interlace = Memory.FillRAM[0x2133]&1;
- }
- break;
-
- case 0x2106:
- // Mosaic pixel size and enable
- if (Byte != Memory.FillRAM [0x2106])
- {
- FLUSH_REDRAW ();
- PPU.Mosaic = (Byte >> 4) + 1;
- PPU.BGMosaic [0] = (Byte & 1) && PPU.Mosaic > 1;
- PPU.BGMosaic [1] = (Byte & 2) && PPU.Mosaic > 1;
- PPU.BGMosaic [2] = (Byte & 4) && PPU.Mosaic > 1;
- PPU.BGMosaic [3] = (Byte & 8) && PPU.Mosaic > 1;
- }
- break;
- case 0x2107: // [BG0SC]
- case 0x2108: // [BG1SC]
- case 0x2109: // [BG2SC]
- case 0x210A: // [BG3SC]
- if (Byte != Memory.FillRAM [Address])
- {
- FLUSH_REDRAW ();
- PPU.BG[Address - 0x2107].SCSize = Byte & 3;
- PPU.BG[Address - 0x2107].SCBase = (Byte & 0x7c) << 8;
- }
- break;
-
- case 0x210B: // [BG01NBA]
- if (Byte != Memory.FillRAM [0x210b])
- {
- FLUSH_REDRAW ();
- PPU.BG[0].NameBase = (Byte & 7) << 12;
- PPU.BG[1].NameBase = ((Byte >> 4) & 7) << 12;
- }
- break;
-
- case 0x210C: // [BG23NBA]
- if (Byte != Memory.FillRAM [0x210c])
- {
- FLUSH_REDRAW ();
- PPU.BG[2].NameBase = (Byte & 7) << 12;
- 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:
- //TEST9 if(last_written != 0x210d) PPU.BGnxOFSbyte = 0;
- PPU.BG[0].HOffset = (Byte<<8) | PPU.BGnxOFSbyte;
- PPU.BGnxOFSbyte = Byte;
- // fprintf(stderr, "%02x to %04x (PPU.BG[0].HOffset = %04x %d)\n", Byte, Address, PPU.BG[0].HOffset, CPU.V_Counter);
- break;
-
- case 0x210E:
- PPU.BG[0].VOffset = (Byte<<8) | PPU.BGnxOFSbyte;
- PPU.BGnxOFSbyte = Byte;
- // fprintf(stderr, "%02x to %04x (PPU.BG[0].VOffset = %04x %d)\n", Byte, Address, PPU.BG[0].VOffset, CPU.V_Counter);
- break;
-
- case 0x210F:
- PPU.BG[1].HOffset = (Byte<<8) | PPU.BGnxOFSbyte;
- PPU.BGnxOFSbyte = Byte;
- // fprintf(stderr, "%02x to %04x (PPU.BG[1].HOffset = %04x %d)\n", Byte, Address, PPU.BG[1].HOffset, CPU.V_Counter);
- break;
-
- case 0x2110:
- PPU.BG[1].VOffset = (Byte<<8) | PPU.BGnxOFSbyte;
- PPU.BGnxOFSbyte = Byte;
- // fprintf(stderr, "%02x to %04x (PPU.BG[1].VOffset = %04x %d)\n", Byte, Address, PPU.BG[1].VOffset, CPU.V_Counter);
- break;
-
- case 0x2111:
- PPU.BG[2].HOffset = (Byte<<8) | PPU.BGnxOFSbyte;
- PPU.BGnxOFSbyte = Byte;
- // fprintf(stderr, "%02x to %04x (PPU.BG[2].HOffset = %04x %d)\n", Byte, Address, PPU.BG[2].HOffset, CPU.V_Counter);
- break;
-
- case 0x2112:
- PPU.BG[2].VOffset = (Byte<<8) | PPU.BGnxOFSbyte;
- PPU.BGnxOFSbyte = Byte;
- // fprintf(stderr, "%02x to %04x (PPU.BG[2].VOffset = %04x %d)\n", Byte, Address, PPU.BG[2].VOffset, CPU.V_Counter);
- break;
-
- case 0x2113:
- PPU.BG[3].HOffset = (Byte<<8) | PPU.BGnxOFSbyte;
- PPU.BGnxOFSbyte = Byte;
- // fprintf(stderr, "%02x to %04x (PPU.BG[3].HOffset = %04x %d)\n", Byte, Address, PPU.BG[3].HOffset, CPU.V_Counter);
- break;
-
- case 0x2114:
- PPU.BG[3].VOffset = (Byte<<8) | PPU.BGnxOFSbyte;
- PPU.BGnxOFSbyte = Byte;
- // fprintf(stderr, "%02x to %04x (PPU.BG[3].VOffset = %04x %d)\n", Byte, Address, PPU.BG[3].VOffset, CPU.V_Counter);
- break;
-
- //end Theme Park
-
- case 0x2115:
- // VRAM byte/word access flag and increment
- PPU.VMA.High = (Byte & 0x80) == 0 ? FALSE : TRUE;
- switch (Byte & 3)
- {
- case 0:
- PPU.VMA.Increment = 1;
- break;
- case 1:
- PPU.VMA.Increment = 32;
- break;
- case 2:
- case 3:
- PPU.VMA.Increment = 128;
- break;
- }
- if (Byte & 0x0c)
- {
- static uint16 IncCount [4] = { 0, 32, 64, 128 };
- static uint16 Shift [4] = { 0, 5, 6, 7 };
-// PPU.VMA.Increment = 1;
- uint8 i = (Byte & 0x0c) >> 2;
- PPU.VMA.FullGraphicCount = IncCount [i];
- PPU.VMA.Mask1 = IncCount [i] * 8 - 1;
- PPU.VMA.Shift = Shift [i];
- }
- else
- PPU.VMA.FullGraphicCount = 0;
- break;
-
- case 0x2116:
- // VRAM read/write address (low)
- PPU.VMA.Address &= 0xFF00;
- PPU.VMA.Address |= Byte;
-#ifdef CORRECT_VRAM_READS
- if (PPU.VMA.FullGraphicCount)
- {
- uint32 addr = PPU.VMA.Address;
- uint32 rem = addr & PPU.VMA.Mask1;
- uint32 address = (addr & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3);
- IPPU.VRAMReadBuffer = READ_WORD(Memory.VRAM+((address << 1) & 0xFFFF));
- } else
- IPPU.VRAMReadBuffer = READ_WORD(Memory.VRAM+((PPU.VMA.Address << 1) & 0xffff));
-#else
- IPPU.FirstVRAMRead = TRUE;
-#endif
- break;
-
- case 0x2117:
- // VRAM read/write address (high)
- PPU.VMA.Address &= 0x00FF;
- PPU.VMA.Address |= Byte << 8;
-#ifdef CORRECT_VRAM_READS
- if (PPU.VMA.FullGraphicCount)
- {
- uint32 addr = PPU.VMA.Address;
- uint32 rem = addr & PPU.VMA.Mask1;
- uint32 address = (addr & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3);
- IPPU.VRAMReadBuffer = READ_WORD(Memory.VRAM+((address << 1) & 0xFFFF));
- } else
- IPPU.VRAMReadBuffer = READ_WORD(Memory.VRAM+((PPU.VMA.Address << 1) & 0xffff));
-#else
- IPPU.FirstVRAMRead = TRUE;
-#endif
- break;
-
- case 0x2118:
- // VRAM write data (low)
-#ifndef CORRECT_VRAM_READS
- IPPU.FirstVRAMRead = TRUE;
-#endif
- REGISTER_2118(Byte);
- break;
-
- case 0x2119:
- // VRAM write data (high)
-#ifndef CORRECT_VRAM_READS
- IPPU.FirstVRAMRead = TRUE;
-#endif
- REGISTER_2119(Byte);
- break;
-
- case 0x211a:
- // Mode 7 outside rotation area display mode and flipping
- if (Byte != Memory.FillRAM [0x211a])
- {
- FLUSH_REDRAW ();
- PPU.Mode7Repeat = Byte >> 6;
- if (PPU.Mode7Repeat == 1)
- PPU.Mode7Repeat = 0;
- PPU.Mode7VFlip = (Byte & 2) >> 1;
- PPU.Mode7HFlip = Byte & 1;
- }
- break;
- case 0x211b:
- // Mode 7 matrix A (low & high)
- PPU.MatrixA = ((PPU.MatrixA >> 8) & 0xff) | (Byte << 8);
- PPU.Need16x8Mulitply = TRUE;
- break;
- case 0x211c:
- // Mode 7 matrix B (low & high)
- PPU.MatrixB = ((PPU.MatrixB >> 8) & 0xff) | (Byte << 8);
- PPU.Need16x8Mulitply = TRUE;
- break;
- case 0x211d:
- // Mode 7 matrix C (low & high)
- PPU.MatrixC = ((PPU.MatrixC >> 8) & 0xff) | (Byte << 8);
- break;
- case 0x211e:
- // Mode 7 matrix D (low & high)
- PPU.MatrixD = ((PPU.MatrixD >> 8) & 0xff) | (Byte << 8);
- break;
- case 0x211f:
- // Mode 7 centre of rotation X (low & high)
- PPU.CentreX = ((PPU.CentreX >> 8) & 0xff) | (Byte << 8);
- break;
- case 0x2120:
- // Mode 7 centre of rotation Y (low & high)
- PPU.CentreY = ((PPU.CentreY >> 8) & 0xff) | (Byte << 8);
- break;
-
- case 0x2121:
- // CG-RAM address
- PPU.CGFLIP = 0;
- PPU.CGFLIPRead = 0;
- PPU.CGADD = Byte;
- break;
-
- case 0x2122:
- REGISTER_2122(Byte);
- break;
-
- case 0x2123:
- // Window 1 and 2 enable for backgrounds 1 and 2
- if (Byte != Memory.FillRAM [0x2123])
- {
- FLUSH_REDRAW ();
- PPU.ClipWindow1Enable [0] = !!(Byte & 0x02);
- PPU.ClipWindow1Enable [1] = !!(Byte & 0x20);
- PPU.ClipWindow2Enable [0] = !!(Byte & 0x08);
- PPU.ClipWindow2Enable [1] = !!(Byte & 0x80);
- PPU.ClipWindow1Inside [0] = !(Byte & 0x01);
- PPU.ClipWindow1Inside [1] = !(Byte & 0x10);
- PPU.ClipWindow2Inside [0] = !(Byte & 0x04);
- PPU.ClipWindow2Inside [1] = !(Byte & 0x40);
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x2124:
- // Window 1 and 2 enable for backgrounds 3 and 4
- if (Byte != Memory.FillRAM [0x2124])
- {
- FLUSH_REDRAW ();
- PPU.ClipWindow1Enable [2] = !!(Byte & 0x02);
- PPU.ClipWindow1Enable [3] = !!(Byte & 0x20);
- PPU.ClipWindow2Enable [2] = !!(Byte & 0x08);
- PPU.ClipWindow2Enable [3] = !!(Byte & 0x80);
- PPU.ClipWindow1Inside [2] = !(Byte & 0x01);
- PPU.ClipWindow1Inside [3] = !(Byte & 0x10);
- PPU.ClipWindow2Inside [2] = !(Byte & 0x04);
- PPU.ClipWindow2Inside [3] = !(Byte & 0x40);
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x2125:
- // Window 1 and 2 enable for objects and colour window
- if (Byte != Memory.FillRAM [0x2125])
- {
- FLUSH_REDRAW ();
- PPU.ClipWindow1Enable [4] = !!(Byte & 0x02);
- PPU.ClipWindow1Enable [5] = !!(Byte & 0x20);
- PPU.ClipWindow2Enable [4] = !!(Byte & 0x08);
- PPU.ClipWindow2Enable [5] = !!(Byte & 0x80);
- PPU.ClipWindow1Inside [4] = !(Byte & 0x01);
- PPU.ClipWindow1Inside [5] = !(Byte & 0x10);
- PPU.ClipWindow2Inside [4] = !(Byte & 0x04);
- PPU.ClipWindow2Inside [5] = !(Byte & 0x40);
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x2126:
- // Window 1 left position
- if (Byte != Memory.FillRAM [0x2126])
- {
- FLUSH_REDRAW ();
- PPU.Window1Left = Byte;
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x2127:
- // Window 1 right position
- if (Byte != Memory.FillRAM [0x2127])
- {
- FLUSH_REDRAW ();
- PPU.Window1Right = Byte;
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x2128:
- // Window 2 left position
- if (Byte != Memory.FillRAM [0x2128])
- {
- FLUSH_REDRAW ();
- PPU.Window2Left = Byte;
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x2129:
- // Window 2 right position
- if (Byte != Memory.FillRAM [0x2129])
- {
- FLUSH_REDRAW ();
- PPU.Window2Right = Byte;
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x212a:
- // Windows 1 & 2 overlap logic for backgrounds 1 - 4
- if (Byte != Memory.FillRAM [0x212a])
- {
- FLUSH_REDRAW ();
- PPU.ClipWindowOverlapLogic [0] = (Byte & 0x03);
- PPU.ClipWindowOverlapLogic [1] = (Byte & 0x0c) >> 2;
- PPU.ClipWindowOverlapLogic [2] = (Byte & 0x30) >> 4;
- PPU.ClipWindowOverlapLogic [3] = (Byte & 0xc0) >> 6;
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x212b:
- // Windows 1 & 2 overlap logic for objects and colour window
- if (Byte != Memory.FillRAM [0x212b])
- {
- FLUSH_REDRAW ();
- PPU.ClipWindowOverlapLogic [4] = Byte & 0x03;
- PPU.ClipWindowOverlapLogic [5] = (Byte & 0x0c) >> 2;
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x212c:
- // Main screen designation (backgrounds 1 - 4 and objects)
- if (Byte != Memory.FillRAM [0x212c])
- {
- FLUSH_REDRAW ();
- PPU.RecomputeClipWindows = TRUE;
- Memory.FillRAM [Address] = Byte;
- return;
- }
- break;
- case 0x212d:
- // Sub-screen designation (backgrounds 1 - 4 and objects)
- if (Byte != Memory.FillRAM [0x212d])
- {
- FLUSH_REDRAW ();
- PPU.RecomputeClipWindows = TRUE;
- Memory.FillRAM [Address] = Byte;
- return;
- }
- break;
- case 0x212e:
- // Window mask designation for main screen ?
- case 0x212f:
- // Window mask designation for sub-screen ?
- if (Byte != Memory.FillRAM [Address])
- {
- FLUSH_REDRAW ();
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x2130:
- // Fixed colour addition or screen addition
- if (Byte != Memory.FillRAM [0x2130])
- {
- FLUSH_REDRAW ();
- PPU.RecomputeClipWindows = TRUE;
- }
- break;
- case 0x2131:
- // Colour addition or subtraction select
- if (Byte != Memory.FillRAM[0x2131])
- {
- FLUSH_REDRAW ();
- // Backgrounds 1 - 4, objects and backdrop colour add/sub enable
- Memory.FillRAM[0x2131] = Byte;
- }
- break;
- case 0x2132:
- if (Byte != Memory.FillRAM [0x2132])
- {
- FLUSH_REDRAW ();
- // Colour data for fixed colour addition/subtraction
- if (Byte & 0x80)
- PPU.FixedColourBlue = Byte & 0x1f;
- if (Byte & 0x40)
- PPU.FixedColourGreen = Byte & 0x1f;
- if (Byte & 0x20)
- PPU.FixedColourRed = Byte & 0x1f;
- }
- break;
- case 0x2133:
- // Screen settings
- if (Byte != Memory.FillRAM [0x2133])
- {
- if (Byte & 0x04)
- {
- PPU.ScreenHeight = SNES_HEIGHT_EXTENDED;
- if(IPPU.DoubleHeightPixels)
- IPPU.RenderedScreenHeight = PPU.ScreenHeight << 1;
- else
- IPPU.RenderedScreenHeight = PPU.ScreenHeight;
- }
- else PPU.ScreenHeight = SNES_HEIGHT;
-
- //if((Byte & 1)&&(PPU.BGMode==5||PPU.BGMode==6))
- //IPPU.Interlace=1;
- if((Memory.FillRAM [0x2133] ^ Byte)&3)
- {
- FLUSH_REDRAW ();
- if((Memory.FillRAM [0x2133] ^ Byte)&2)
- IPPU.OBJChanged = TRUE;
- if(PPU.BGMode==5||PPU.BGMode==6)
- IPPU.Interlace = Byte&1;
- IPPU.InterlaceSprites=0;
- // IPPU.InterlaceSprites = (Byte&2)>>1;
- }
-
- }
- break;
- case 0x2134:
- 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;
- case 0x2140: case 0x2141: case 0x2142: case 0x2143:
- case 0x2144: case 0x2145: case 0x2146: case 0x2147:
- case 0x2148: case 0x2149: case 0x214a: case 0x214b:
- case 0x214c: case 0x214d: case 0x214e: case 0x214f:
- case 0x2150: case 0x2151: case 0x2152: case 0x2153:
- case 0x2154: case 0x2155: case 0x2156: case 0x2157:
- case 0x2158: case 0x2159: case 0x215a: case 0x215b:
- case 0x215c: case 0x215d: case 0x215e: case 0x215f:
- case 0x2160: case 0x2161: case 0x2162: case 0x2163:
- case 0x2164: case 0x2165: case 0x2166: case 0x2167:
- case 0x2168: case 0x2169: case 0x216a: case 0x216b:
- case 0x216c: case 0x216d: case 0x216e: case 0x216f:
- case 0x2170: case 0x2171: case 0x2172: case 0x2173:
- case 0x2174: case 0x2175: case 0x2176: case 0x2177:
- case 0x2178: case 0x2179: case 0x217a: case 0x217b:
- case 0x217c: case 0x217d: case 0x217e: case 0x217f:
-#ifdef SPCTOOL
- _SPCInPB (Address & 3, Byte);
-#else
- // CPU.Flags |= DEBUG_MODE_FLAG;
- Memory.FillRAM [Address] = Byte;
- IAPU.RAM [(Address & 3) + 0xf4] = Byte;
-#ifdef SPC700_SHUTDOWN
- IAPU.APUExecuting = Settings.APUEnabled;
- IAPU.WaitCounter++;
-#endif
-#endif // SPCTOOL
- break;
- case 0x2180:
- REGISTER_2180(Byte);
- break;
- case 0x2181:
- PPU.WRAM &= 0x1FF00;
- PPU.WRAM |= Byte;
- break;
- case 0x2182:
- PPU.WRAM &= 0x100FF;
- PPU.WRAM |= Byte << 8;
- break;
- case 0x2183:
- PPU.WRAM &= 0x0FFFF;
- PPU.WRAM |= Byte << 16;
- PPU.WRAM &= 0x1FFFF;
- break;
- }
- }
- else
- {
- if (Settings.SA1)
- {
- if (Address >= 0x2200 && Address <0x23ff)
- S9xSetSA1 (Byte, Address);
- else
- Memory.FillRAM [Address] = Byte;
-
- return;
- }
- else
- // Dai Kaijyu Monogatari II
- if (Address == 0x2801 && Settings.SRTC)
- S9xSetSRTC (Byte, Address);
- else
- if (Address >= 0x3000 && Address < 0x3300)
- {
- if (!Settings.SuperFX)
- {
- return;
- }
-
-#ifdef ZSNES_FX
- Memory.FillRAM [Address] = Byte;
- if (Address < 0x3040)
- S9xSuperFXWriteReg (Byte, Address);
-#else
- switch (Address)
- {
- case 0x3030:
- if ((Memory.FillRAM [0x3030] ^ Byte) & FLG_G)
- {
- Memory.FillRAM [Address] = Byte;
- // Go flag has been changed
- if (Byte & FLG_G)
- S9xSuperFXExec ();
- else
- FxFlushCache ();
- }
- else
- Memory.FillRAM [Address] = Byte;
- break;
-
- case 0x3031:
- case 0x3033:
- case 0x3037:
- case 0x3039:
- case 0x303a:
- case 0x303f:
- Memory.FillRAM [Address] = Byte;
- break;
- case 0x3034:
- case 0x3036:
- Memory.FillRAM [Address] = Byte & 0x7f;
- break;
- case 0x3038:
- Memory.FillRAM [Address] = Byte;
- fx_dirtySCBR();
- break;
- case 0x303b:
- break;
- case 0x303c:
- Memory.FillRAM [Address] = Byte;
- fx_updateRamBank(Byte);
- break;
- case 0x301f:
- Memory.FillRAM [Address] = Byte;
- Memory.FillRAM [0x3000 + GSU_SFR] |= FLG_G;
- S9xSuperFXExec ();
- return;
-
- default:
- Memory.FillRAM[Address] = Byte;
- if (Address >= 0x3100)
- {
- FxCacheWriteAccess (Address);
- }
- break;
- }
-#endif
- return;
- }
- }
- Memory.FillRAM[Address] = Byte;
-
-}
-
-/******************************************************************************/
-/* S9xGetPPU() */
-/* This function retrieves a PPU Register */
-/******************************************************************************/
-uint8 S9xGetPPU (uint16 Address)
-{
- uint8 byte = OpenBus;
- if(Address<0x2100)//not a real PPU reg
- return OpenBus; //treat as unmapped memory returning last byte on the bus
- if (Address <= 0x2190)
- {
- switch (Address)
- {
- case 0x2100:
- case 0x2101:
- case 0x2102:
- case 0x2103:
- return OpenBus;
-
- 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:
- return PPU.OpenBus1;
-
- 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:
- return OpenBus;
-
- case 0x210b:
- case 0x210c:
- case 0x210d:
- case 0x210e:
- case 0x210f:
- case 0x2110:
- case 0x2111:
- case 0x2112:
- case 0x2113:
- return OpenBus;
-
- case 0x2114:
- case 0x211b:
- case 0x211c:
- case 0x211d:
- case 0x211e:
- case 0x211f:
- case 0x2120:
- return OpenBus;
-
-
- case 0x2134:
- case 0x2135:
- case 0x2136:
- // 16bit x 8bit multiply read result.
- if (PPU.Need16x8Mulitply)
- {
- int32 r = (int32) PPU.MatrixA * (int32) (PPU.MatrixB >> 8);
-
- Memory.FillRAM[0x2134] = (uint8) r;
- Memory.FillRAM[0x2135] = (uint8)(r >> 8);
- Memory.FillRAM[0x2136] = (uint8)(r >> 16);
- PPU.Need16x8Mulitply = FALSE;
- }
- return (PPU.OpenBus1 = Memory.FillRAM[Address]);
- case 0x2137:
- S9xLatchCounters(0);
- return OpenBus;
-
- case 0x2138:
- // Read OAM (sprite) control data
- if(PPU.OAMAddr&0x100){
- if (!(PPU.OAMFlip&1))
- {
- byte = PPU.OAMData [(PPU.OAMAddr&0x10f) << 1];
- }
- else
- {
- byte = PPU.OAMData [((PPU.OAMAddr&0x10f) << 1) + 1];
- PPU.OAMAddr=(PPU.OAMAddr+1)&0x1ff;
- if (PPU.OAMPriorityRotation && PPU.FirstSprite != (PPU.OAMAddr >> 1))
- {
- PPU.FirstSprite = (PPU.OAMAddr&0xFE) >> 1;
- IPPU.OBJChanged = TRUE;
- }
- }
- } else {
- if (!(PPU.OAMFlip&1))
- {
- byte = PPU.OAMData [PPU.OAMAddr << 1];
- }
- else
- {
- byte = PPU.OAMData [(PPU.OAMAddr << 1) + 1];
- ++PPU.OAMAddr;
- if (PPU.OAMPriorityRotation && PPU.FirstSprite != (PPU.OAMAddr >> 1))
- {
- PPU.FirstSprite = (PPU.OAMAddr&0xFE) >> 1;
- IPPU.OBJChanged = TRUE;
- }
- }
- }
- PPU.OAMFlip ^= 1;
- return (PPU.OpenBus1 = byte);
-
- case 0x2139:
- // Read vram low byte
-#ifdef CORRECT_VRAM_READS
- byte = IPPU.VRAMReadBuffer & 0xff;
- if (!PPU.VMA.High)
- {
- if (PPU.VMA.FullGraphicCount)
- {
- uint32 addr = PPU.VMA.Address;
- uint32 rem = addr & PPU.VMA.Mask1;
- uint32 address = (addr & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3);
- IPPU.VRAMReadBuffer = READ_WORD(Memory.VRAM+((address << 1) & 0xFFFF));
- } else
- IPPU.VRAMReadBuffer = READ_WORD(Memory.VRAM+((PPU.VMA.Address << 1) & 0xffff));
- PPU.VMA.Address += PPU.VMA.Increment;
- }
-#else
- if (IPPU.FirstVRAMRead)
- byte = Memory.VRAM[(PPU.VMA.Address << 1)&0xFFFF];
- else
- if (PPU.VMA.FullGraphicCount)
- {
- uint32 addr = PPU.VMA.Address - 1;
- uint32 rem = addr & PPU.VMA.Mask1;
- uint32 address = (addr & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3);
- byte = Memory.VRAM [((address << 1) - 2) & 0xFFFF];
- }
- else
- byte = Memory.VRAM[((PPU.VMA.Address << 1) - 2) & 0xffff];
-
- if (!PPU.VMA.High)
- {
- PPU.VMA.Address += PPU.VMA.Increment;
- IPPU.FirstVRAMRead = FALSE;
- }
-#endif
- PPU.OpenBus1 = byte;
- break;
- case 0x213A:
- // Read vram high byte
-#ifdef CORRECT_VRAM_READS
- byte = (IPPU.VRAMReadBuffer>>8) & 0xff;
- if (PPU.VMA.High)
- {
- if (PPU.VMA.FullGraphicCount)
- {
- uint32 addr = PPU.VMA.Address;
- uint32 rem = addr & PPU.VMA.Mask1;
- uint32 address = (addr & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3);
- IPPU.VRAMReadBuffer = READ_WORD(Memory.VRAM+((address << 1) & 0xFFFF));
- } else
- IPPU.VRAMReadBuffer = READ_WORD(Memory.VRAM+((PPU.VMA.Address << 1) & 0xffff));
- PPU.VMA.Address += PPU.VMA.Increment;
- }
-#else
- if (IPPU.FirstVRAMRead)
- byte = Memory.VRAM[((PPU.VMA.Address << 1) + 1) & 0xffff];
- else
- if (PPU.VMA.FullGraphicCount)
- {
- uint32 addr = PPU.VMA.Address - 1;
- uint32 rem = addr & PPU.VMA.Mask1;
- uint32 address = (addr & ~PPU.VMA.Mask1) +
- (rem >> PPU.VMA.Shift) +
- ((rem & (PPU.VMA.FullGraphicCount - 1)) << 3);
- byte = Memory.VRAM [((address << 1) - 1) & 0xFFFF];
- }
- else
- byte = Memory.VRAM[((PPU.VMA.Address << 1) - 1) & 0xFFFF];
- if (PPU.VMA.High)
- {
- PPU.VMA.Address += PPU.VMA.Increment;
- IPPU.FirstVRAMRead = FALSE;
- }
-#endif
- PPU.OpenBus1 = byte;
- break;
-
- case 0x213B:
- // Read palette data
- if (PPU.CGFLIPRead)
- byte = PPU.CGDATA [PPU.CGADD++] >> 8;
- else
- byte = PPU.CGDATA [PPU.CGADD] & 0xff;
-
- PPU.CGFLIPRead ^= 1;
- return (PPU.OpenBus2 = byte);
-
- case 0x213C:
- // Horizontal counter value 0-339
- if (PPU.HBeamFlip)
- byte = (PPU.OpenBus2 & 0xfe)
- | ((PPU.HBeamPosLatched >> 8) & 0x01);
-
- else
- byte = (uint8)PPU.HBeamPosLatched;
- PPU.OpenBus2 = byte;
- PPU.HBeamFlip ^= 1;
- break;
-
- case 0x213D:
- // Vertical counter value 0-262
- if (PPU.VBeamFlip)
- byte = (PPU.OpenBus2 & 0xfe)
- | ((PPU.VBeamPosLatched >> 8) & 0x01);
- else
- byte = (uint8)PPU.VBeamPosLatched;
- PPU.OpenBus2 = byte;
- PPU.VBeamFlip ^= 1;
- break;
-
- case 0x213E:
- // PPU time and range over flags
- FLUSH_REDRAW ();
-
- //so far, 5c77 version is always 1.
- return (PPU.OpenBus1 = (Model->_5C77 | PPU.RangeTimeOver));
-
- case 0x213F:
- // NTSC/PAL and which field flags
- PPU.VBeamFlip = PPU.HBeamFlip = 0;
- //neviksti found a 2 and a 3 here. SNEeSe uses a 3.
- //XXX: field flags not emulated
- return ((Settings.PAL ? 0x10 : 0) | (Memory.FillRAM[0x213f] & 0xc0)| Model->_5C78) | (~PPU.OpenBus2 & 0x20);
-
- case 0x2140: case 0x2141: case 0x2142: case 0x2143:
- case 0x2144: case 0x2145: case 0x2146: case 0x2147:
- case 0x2148: case 0x2149: case 0x214a: case 0x214b:
- case 0x214c: case 0x214d: case 0x214e: case 0x214f:
- case 0x2150: case 0x2151: case 0x2152: case 0x2153:
- case 0x2154: case 0x2155: case 0x2156: case 0x2157:
- case 0x2158: case 0x2159: case 0x215a: case 0x215b:
- case 0x215c: case 0x215d: case 0x215e: case 0x215f:
- case 0x2160: case 0x2161: case 0x2162: case 0x2163:
- case 0x2164: case 0x2165: case 0x2166: case 0x2167:
- case 0x2168: case 0x2169: case 0x216a: case 0x216b:
- case 0x216c: case 0x216d: case 0x216e: case 0x216f:
- case 0x2170: case 0x2171: case 0x2172: case 0x2173:
- case 0x2174: case 0x2175: case 0x2176: case 0x2177:
- case 0x2178: case 0x2179: case 0x217a: case 0x217b:
- case 0x217c: case 0x217d: case 0x217e: case 0x217f:
-#ifdef SPCTOOL
- return ((uint8) _SPCOutP [Address & 3]);
-#else
- // CPU.Flags |= DEBUG_MODE_FLAG;
-#ifdef SPC700_SHUTDOWN
- IAPU.APUExecuting = Settings.APUEnabled;
- IAPU.WaitCounter++;
-#endif
- if (Settings.APUEnabled)
- {
-#ifdef CPU_SHUTDOWN
-// CPU.WaitAddress = CPU.PCAtOpcodeStart;
-#endif
- if (SNESGameFixes.APU_OutPorts_ReturnValueFix &&
- Address >= 0x2140 && Address <= 0x2143 && !CPU.V_Counter)
- {
- return (uint8)((Address & 1) ? ((rand() & 0xff00) >> 8) :
- (rand() & 0xff));
- }
-
- return (APU.OutPorts [Address & 3]);
- }
-
- switch (Settings.SoundSkipMethod)
- {
- case 0:
- case 1:
- case 3:
- CPU.BranchSkip = TRUE;
- break;
- case 2:
- break;
- }
- if ((Address & 3) < 2)
- {
- int r = rand ();
- if (r & 2)
- {
- if (r & 4)
- return ((Address & 3) == 1 ? 0xaa : 0xbb);
- else
- return ((r >> 3) & 0xff);
- }
- }
- else
- {
- int r = rand ();
- if (r & 2)
- return ((r >> 3) & 0xff);
- }
- return (Memory.FillRAM[Address]);
-#endif // SPCTOOL
-
- case 0x2180:
- // Read WRAM
- byte = Memory.RAM [PPU.WRAM++];
- PPU.WRAM &= 0x1FFFF;
- break;
- case 0x2181:
- case 0x2182:
- case 0x2183:
- default:
- return OpenBus;
- }
- }
- else
- {
- if (Settings.SA1)
- return (S9xGetSA1 (Address));
-
- if (Address <= 0x2fff || Address >= 0x3300)
- {
- switch (Address)
- {
- case 0x21c2:
- if(Model->_5C77 ==2)
- return (0x20);
-
- // fprintf(stderr, "Read from $21c2!\n");
- return OpenBus;
- case 0x21c3:
- if(Model->_5C77 ==2)
- return (0);
- // fprintf(stderr, "Read from $21c3!\n");
- return OpenBus;
- case 0x2800:
- // For Dai Kaijyu Monogatari II
- if (Settings.SRTC)
- return (S9xGetSRTC (Address));
- /*FALL*/
-
- default:
- return OpenBus;
- }
- }
-
- if (!Settings.SuperFX)
- return OpenBus;
-#ifdef ZSNES_FX
- if (Address < 0x3040)
- byte = S9xSuperFXReadReg (Address);
- else
- byte = Memory.FillRAM [Address];
-
-#ifdef CPU_SHUTDOWN
- if (Address == 0x3030)
- CPU.WaitAddress = CPU.PCAtOpcodeStart;
-#endif
- if (Address == 0x3031)
- CLEAR_IRQ_SOURCE (GSU_IRQ_SOURCE);
-#else
- byte = Memory.FillRAM [Address];
-
-//if (Address != 0x3030 && Address != 0x3031)
-//printf ("%04x\n", 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;
- }
- return (byte);
-#endif
- }
-// fprintf(stderr, "%03d: %02x from %04x\n", CPU.V_Counter, byte, Address);
- return (byte);
-}
-
-/******************************************************************************/
-/* S9xSetCPU() */
-/* This function sets a CPU/DMA Register to a specific byte */
-/******************************************************************************/
-void S9xSetCPU (uint8 byte, uint16 Address)
-{
- int d;
-// fprintf(stderr, "%03d: %02x to %04x\n", CPU.V_Counter, byte, Address);
-
- if (Address < 0x4200)
- {
- CPU.Cycles += ONE_CYCLE;
- switch (Address)
- {
- case 0x4016:
- // S9xReset reading of old-style joypads
- if ((byte & 1) && !(Memory.FillRAM [Address] & 1))
- {
- PPU.Joypad1ButtonReadPos = 0;
- PPU.Joypad2ButtonReadPos = 0;
- PPU.Joypad3ButtonReadPos = 0;
- }
- break;
- case 0x4017:
- break;
- default:
- break;
- }
- }
- else
- switch (Address)
- {
- case 0x4200:
- // NMI, V & H IRQ and joypad reading enable flags
- if (byte & 0x20)
- {
- //if(!SNESGameFixes.umiharakawaseFix && PPU.IRQVBeamPos==262) fprintf(stderr, "PPU.IRQVBeamPos = %d, CPU.V_Counter = %d\n", PPU.IRQVBeamPos, CPU.V_Counter);
- if (!PPU.VTimerEnabled)
- {
- PPU.VTimerEnabled = TRUE;
- if (PPU.HTimerEnabled)
- S9xUpdateHTimer ();
- else
- if (PPU.IRQVBeamPos == CPU.V_Counter)
- S9xSetIRQ (PPU_V_BEAM_IRQ_SOURCE);
- }
- }
- else
- {
- PPU.VTimerEnabled = FALSE;
-// if (SNESGameFixes.umiharakawaseFix)
-// byte &= ~0x20;
- }
-
- if (byte & 0x10)
- {
- if (!PPU.HTimerEnabled)
- {
- PPU.HTimerEnabled = TRUE;
- S9xUpdateHTimer ();
- }
- }
- else
- {
- // No need to check for HTimer being disabled as the scanline
- // event trigger code won't trigger an H-IRQ unless its enabled.
- PPU.HTimerEnabled = FALSE;
- PPU.HTimerPosition = Settings.H_Max + 1;
- }
- if (!Settings.DaffyDuck)
- CLEAR_IRQ_SOURCE (PPU_V_BEAM_IRQ_SOURCE | PPU_H_BEAM_IRQ_SOURCE);
-
- if ((byte & 0x80) &&
- !(Memory.FillRAM [0x4200] & 0x80) &&
- CPU.V_Counter >= PPU.ScreenHeight + FIRST_VISIBLE_LINE &&
- CPU.V_Counter <= PPU.ScreenHeight +
- (SNESGameFixes.alienVSpredetorFix ? 25 : 15) && //jyam 15->25 alien vs predetor
-// Panic Bomberman clears the NMI pending flag @ scanline 230 before enabling
-// NMIs again. The NMI routine crashes the CPU if it is called without the NMI
-// pending flag being set...
- (Memory.FillRAM [0x4210] & 0x80) &&
- !CPU.NMIActive)
- {
- CPU.Flags |= NMI_FLAG;
- CPU.NMIActive = TRUE;
- CPU.NMICycleCount = CPU.NMITriggerPoint;
- }
- break;
- case 0x4201:
- if((byte&0x80)==0 && (Memory.FillRAM[0x4213]&0x80)==0x80)
- S9xLatchCounters(1);
- Memory.FillRAM[0x4201] = Memory.FillRAM[0x4213] = byte;
- break;
- case 0x4202:
- // Multiplier (for multply)
- break;
- case 0x4203:
- {
- // Multiplicand
- uint32 res = Memory.FillRAM[0x4202] * byte;
-
-#if defined FAST_LSB_WORD_ACCESS || defined FAST_ALIGNED_LSB_WORD_ACCESS
- // assume malloc'd memory is 2-byte aligned
- * ((uint16 *) &Memory.FillRAM[0x4216]) = res;
-#else
- Memory.FillRAM[0x4216] = (uint8) res;
- Memory.FillRAM[0x4217] = (uint8) (res >> 8);
-#endif
- break;
- }
- case 0x4204:
- case 0x4205:
- // Low and high muliplier (for divide)
- break;
- case 0x4206:
- {
-#if defined FAST_LSB_WORD_ACCESS || defined FAST_ALIGNED_LSB_WORD_ACCESS
- // assume malloc'd memory is 2-byte aligned
- uint16 a = *((uint16 *) &Memory.FillRAM[0x4204]);
-#else
- uint16 a = Memory.FillRAM[0x4204] + (Memory.FillRAM[0x4205] << 8);
-#endif
- uint16 div = byte ? a / byte : 0xffff;
- uint16 rem = byte ? a % byte : a;
-
-#if defined FAST_LSB_WORD_ACCESS || defined FAST_ALIGNED_LSB_WORD_ACCESS
- // assume malloc'd memory is 2-byte aligned
- * ((uint16 *) &Memory.FillRAM[0x4214]) = div;
- * ((uint16 *) &Memory.FillRAM[0x4216]) = rem;
-#else
- Memory.FillRAM[0x4214] = (uint8)div;
- Memory.FillRAM[0x4215] = div >> 8;
- Memory.FillRAM[0x4216] = (uint8)rem;
- Memory.FillRAM[0x4217] = rem >> 8;
-#endif
- break;
- }
- case 0x4207:
- d = PPU.IRQHBeamPos;
- PPU.IRQHBeamPos = (PPU.IRQHBeamPos & 0xFF00) | byte;
-
- if (PPU.HTimerEnabled && PPU.IRQHBeamPos != d)
- S9xUpdateHTimer ();
- break;
-
- case 0x4208:
- d = PPU.IRQHBeamPos;
- PPU.IRQHBeamPos = (PPU.IRQHBeamPos & 0xFF) | ((byte & 1) << 8);
-
- if (PPU.HTimerEnabled && PPU.IRQHBeamPos != d)
- S9xUpdateHTimer ();
-
- break;
-
- case 0x4209:
- d = PPU.IRQVBeamPos;
- PPU.IRQVBeamPos = (PPU.IRQVBeamPos & 0xFF00) | byte;
- if (PPU.VTimerEnabled && PPU.IRQVBeamPos != d)
- {
- if (PPU.HTimerEnabled)
- S9xUpdateHTimer ();
- else
- {
- if (PPU.IRQVBeamPos == CPU.V_Counter)
- S9xSetIRQ (PPU_V_BEAM_IRQ_SOURCE);
- }
- }
- break;
-
- case 0x420A:
- d = PPU.IRQVBeamPos;
- PPU.IRQVBeamPos = (PPU.IRQVBeamPos & 0xFF) | ((byte & 1) << 8);
- if (PPU.VTimerEnabled && PPU.IRQVBeamPos != d)
- {
- if (PPU.HTimerEnabled)
- S9xUpdateHTimer ();
- else
- {
- if (PPU.IRQVBeamPos == CPU.V_Counter)
- S9xSetIRQ (PPU_V_BEAM_IRQ_SOURCE);
- }
- }
- break;
-
- case 0x420B:
- if ((byte & 0x01) != 0)
- S9xDoDMA (0);
- if ((byte & 0x02) != 0)
- S9xDoDMA (1);
- if ((byte & 0x04) != 0)
- S9xDoDMA (2);
- if ((byte & 0x08) != 0)
- S9xDoDMA (3);
- if ((byte & 0x10) != 0)
- S9xDoDMA (4);
- if ((byte & 0x20) != 0)
- S9xDoDMA (5);
- if ((byte & 0x40) != 0)
- S9xDoDMA (6);
- if ((byte & 0x80) != 0)
- S9xDoDMA (7);
- break;
- case 0x420C:
- if (Settings.DisableHDMA)
- byte = 0;
- Memory.FillRAM[0x420c] = byte;
- IPPU.HDMA = byte;
- break;
-
- case 0x420d:
- // Cycle speed 0 - 2.68Mhz, 1 - 3.58Mhz (banks 0x80 +)
- if ((byte & 1) != (Memory.FillRAM [0x420d] & 1))
- {
- if (byte & 1)
- {
- CPU.FastROMSpeed = ONE_CYCLE;
- }
- else CPU.FastROMSpeed = SLOW_ONE_CYCLE;
-
- Memory.FixROMSpeed ();
- }
- break;
-
- case 0x420e:
- case 0x420f:
- // --->>> Unknown
- break;
- case 0x4210:
- // NMI ocurred flag (reset on read or write)
- Memory.FillRAM[0x4210] = Model->_5A22;
- return;
- case 0x4211:
- // 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 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:
- case 0x421b:
- case 0x421c:
- case 0x421d:
- case 0x421e:
- case 0x421f:
- // Joypad values (read-only)
- return;
-
- case 0x4300:
- case 0x4310:
- case 0x4320:
- case 0x4330:
- case 0x4340:
- case 0x4350:
- case 0x4360:
- case 0x4370:
- d = (Address >> 4) & 0x7;
- DMA[d].TransferDirection = (byte & 128) != 0 ? 1 : 0;
- DMA[d].HDMAIndirectAddressing = (byte & 64) != 0 ? 1 : 0;
- DMA[d].AAddressDecrement = (byte & 16) != 0 ? 1 : 0;
- DMA[d].AAddressFixed = (byte & 8) != 0 ? 1 : 0;
- DMA[d].TransferMode = (byte & 7);
- break;
-
- case 0x4301:
- case 0x4311:
- case 0x4321:
- case 0x4331:
- case 0x4341:
- case 0x4351:
- case 0x4361:
- case 0x4371:
- DMA[((Address >> 4) & 0x7)].BAddress = byte;
- break;
-
- case 0x4302:
- case 0x4312:
- case 0x4322:
- case 0x4332:
- case 0x4342:
- case 0x4352:
- case 0x4362:
- case 0x4372:
- d = (Address >> 4) & 0x7;
- DMA[d].AAddress &= 0xFF00;
- DMA[d].AAddress |= byte;
- break;
-
- case 0x4303:
- case 0x4313:
- case 0x4323:
- case 0x4333:
- case 0x4343:
- case 0x4353:
- case 0x4363:
- case 0x4373:
- d = (Address >> 4) & 0x7;
- DMA[d].AAddress &= 0xFF;
- DMA[d].AAddress |= byte << 8;
- break;
-
- case 0x4304:
- case 0x4314:
- case 0x4324:
- case 0x4334:
- case 0x4344:
- case 0x4354:
- case 0x4364:
- case 0x4374:
- DMA[((Address >> 4) & 0x7)].ABank = byte;
- HDMAMemPointers[((Address >> 4) & 0x7)]=NULL;
-
- break;
-
- case 0x4305:
- case 0x4315:
- case 0x4325:
- case 0x4335:
- case 0x4345:
- case 0x4355:
- case 0x4365:
- case 0x4375:
- d = (Address >> 4) & 0x7;
- DMA[d].TransferBytes &= 0xFF00;
- DMA[d].TransferBytes |= byte;
- DMA[d].IndirectAddress &= 0xff00;
- DMA[d].IndirectAddress |= byte;
- HDMAMemPointers[d]=NULL;
- break;
-
- case 0x4306:
- case 0x4316:
- case 0x4326:
- case 0x4336:
- case 0x4346:
- case 0x4356:
- case 0x4366:
- case 0x4376:
- d = (Address >> 4) & 0x7;
- DMA[d].TransferBytes &= 0xFF;
- DMA[d].TransferBytes |= byte << 8;
- DMA[d].IndirectAddress &= 0xff;
- DMA[d].IndirectAddress |= byte << 8;
- HDMAMemPointers[d]=NULL;
- break;
-
- case 0x4307:
- case 0x4317:
- case 0x4327:
- case 0x4337:
- case 0x4347:
- case 0x4357:
- case 0x4367:
- case 0x4377:
- DMA[d = ((Address >> 4) & 0x7)].IndirectBank = byte;
- HDMAMemPointers[d]=NULL;
- break;
-
- case 0x4308:
- case 0x4318:
- case 0x4328:
- case 0x4338:
- case 0x4348:
- case 0x4358:
- case 0x4368:
- case 0x4378:
- d = (Address >> 4) & 7;
- DMA[d].Address &= 0xff00;
- DMA[d].Address |= byte;
- HDMAMemPointers[d] = NULL;
- break;
-
- case 0x4309:
- case 0x4319:
- case 0x4329:
- case 0x4339:
- case 0x4349:
- case 0x4359:
- case 0x4369:
- case 0x4379:
- d = (Address >> 4) & 0x7;
- DMA[d].Address &= 0xff;
- DMA[d].Address |= byte << 8;
- HDMAMemPointers[d] = NULL;
- break;
-
- case 0x430A:
- case 0x431A:
- case 0x432A:
- case 0x433A:
- case 0x434A:
- case 0x435A:
- case 0x436A:
- case 0x437A:
- d = (Address >> 4) & 0x7;
- DMA[d].LineCount = byte & 0x7f;
- DMA[d].Repeat = !(byte & 0x80);
- break;
-
- case 0x430F:
- case 0x431F:
- case 0x432F:
- case 0x433F:
- case 0x434F:
- case 0x435F:
- case 0x436F:
- case 0x437F:
- Address &= ~4; // Convert 43xF to 43xB
- /* fall through */
- case 0x430B:
- case 0x431B:
- case 0x432B:
- case 0x433B:
- case 0x434B:
- case 0x435B:
- case 0x436B:
- case 0x437B:
-
- // Unknown, but they seem to be RAM-ish
-#if 0
- fprintf(stderr, "Write %02x to %04x!\n", byte, Address);
-#endif
- break;
-
- //These registers are used by both the S-DD1 and the SPC7110
- case 0x4800:
- case 0x4801:
- case 0x4802:
- case 0x4803:
- if(Settings.SPC7110)
- S9xSetSPC7110(byte, Address);
- //printf ("%02x->%04x\n", byte, Address);
- break;
-
- case 0x4804:
- case 0x4805:
- case 0x4806:
- case 0x4807:
- //printf ("%02x->%04x\n", byte, Address);
- if(Settings.SPC7110)
- S9xSetSPC7110(byte, Address);
- else S9xSetSDD1MemoryMap (Address - 0x4804, byte & 7);
- break;
-
- //these are used by the SPC7110
- case 0x4808:
- case 0x4809:
- case 0x480A:
- case 0x480B:
- case 0x480C:
- case 0x4810:
- case 0x4811:
- case 0x4812:
- case 0x4813:
- case 0x4814:
- case 0x4815:
- case 0x4816:
- case 0x4817:
- case 0x4818:
- case 0x481A:
- case 0x4820:
- case 0x4821:
- case 0x4822:
- case 0x4823:
- case 0x4824:
- case 0x4825:
- case 0x4826:
- case 0x4827:
- case 0x4828:
- case 0x4829:
- case 0x482A:
- case 0x482B:
- case 0x482C:
- case 0x482D:
- case 0x482E:
- case 0x482F:
- case 0x4830:
- case 0x4831:
- case 0x4832:
- case 0x4833:
- case 0x4834:
- case 0x4840:
- case 0x4841:
- case 0x4842:
- if(Settings.SPC7110)
- {
- S9xSetSPC7110(byte, Address);
- break;
- }
-
- default:
- break;
- }
- Memory.FillRAM [Address] = byte;
-}
-
-/******************************************************************************/
-/* S9xGetCPU() */
-/* This function retrieves a CPU/DMA Register */
-/******************************************************************************/
-uint8 S9xGetCPU (uint16 Address)
-{
- uint8 byte;
-// fprintf(stderr, "read from %04x\n", Address);
-
- if (Address < 0x4200)
- {
- CPU.Cycles += ONE_CYCLE;
- switch (Address)
- {
- case 0x4016:
- {
- if (Memory.FillRAM [0x4016] & 1)
- {
- if ((!Settings.SwapJoypads &&
- IPPU.Controller == SNES_MOUSE_SWAPPED) ||
- (Settings.SwapJoypads &&
- IPPU.Controller == SNES_MOUSE))
- {
- if (++PPU.MouseSpeed [0] > 2)
- PPU.MouseSpeed [0] = 0;
- }
- return (0);
- }
-
- int ind = Settings.SwapJoypads ? 1 : 0;
- byte = IPPU.Joypads[ind] >> (PPU.Joypad1ButtonReadPos ^ 15);
- PPU.Joypad1ButtonReadPos++;
- return (byte & 1);
- }
- case 0x4017:
- {
- 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_SWAPPED:
- if (Settings.SwapJoypads && ++PPU.MouseSpeed [0] > 2)
- PPU.MouseSpeed [0] = 0;
- break;
-
- case SNES_MOUSE:
- if (!Settings.SwapJoypads && ++PPU.MouseSpeed [0] > 2)
- PPU.MouseSpeed [0] = 0;
- break;
- }
- return (0x00);
- }
-
- int ind = Settings.SwapJoypads ? 0 : 1;
-
- if (IPPU.Controller == SNES_MULTIPLAYER5)
- {
- if (Memory.FillRAM [0x4201] & 0x80)
- {
- byte = ((IPPU.Joypads[ind] >> (PPU.Joypad2ButtonReadPos ^ 15)) & 1) |
- (((IPPU.Joypads[2] >> (PPU.Joypad2ButtonReadPos ^ 15)) & 1) << 1);
- PPU.Joypad2ButtonReadPos++;
- return (byte);
- }
- else
- {
- byte = ((IPPU.Joypads[3] >> (PPU.Joypad3ButtonReadPos ^ 15)) & 1) |
- (((IPPU.Joypads[4] >> (PPU.Joypad3ButtonReadPos ^ 15)) & 1) << 1);
- PPU.Joypad3ButtonReadPos++;
- return (byte);
- }
- }
- else if(IPPU.Controller ==SNES_JUSTIFIER || IPPU.Controller ==SNES_JUSTIFIER_2)
- {
- uint8 rv;
- rv=(1&(justifiers>>in_bit));
- in_bit++;
- in_bit%=32;
- return rv;
- }
- return ((IPPU.Joypads[ind] >> (PPU.Joypad2ButtonReadPos++ ^ 15)) & 1);
- }
- default:
- return OpenBus;
- }
-// return (Memory.FillRAM [Address]);
- }
- else
- switch (Address)
- {
- case 0x4200:
- case 0x4201:
- case 0x4202:
- case 0x4203:
- case 0x4204:
- case 0x4205:
- case 0x4206:
- case 0x4207:
- case 0x4208:
- case 0x4209:
- case 0x420a:
- case 0x420b:
- case 0x420c:
- case 0x420d:
- case 0x420e:
- 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.
- return ((byte&0x80)
- |(OpenBus&0x70)
- |Model->_5A22);
-
- case 0x4211:
- byte = (CPU.IRQActive & (PPU_V_BEAM_IRQ_SOURCE | PPU_H_BEAM_IRQ_SOURCE)) ? 0x80 : 0;
- // Super Robot Wars Ex ROM bug requires this.
- byte |= CPU.Cycles >= Settings.HBlankStart ? 0x40 : 0;
- CLEAR_IRQ_SOURCE (PPU_V_BEAM_IRQ_SOURCE | PPU_H_BEAM_IRQ_SOURCE);
-
- // Maybe? Register Scan indicated open bus...
- byte |= OpenBus&0x3f;
-
- 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
- // unless something else pulls it down (i.e. a gun)
- /* fall through */
- case 0x4214:
- case 0x4215:
- // Quotient of divide result
- case 0x4216:
- case 0x4217:
- // Multiplcation result (for multiply) or remainder of
- // divison.
- /* fall through */
- case 0x4218:
- case 0x4219:
- case 0x421a:
- case 0x421b:
- case 0x421c:
- case 0x421d:
- case 0x421e:
- case 0x421f:
- // Joypads 1-4 button and direction state.
- /* fall through */
- case 0x4300:
- case 0x4310:
- case 0x4320:
- case 0x4330:
- case 0x4340:
- case 0x4350:
- case 0x4360:
- case 0x4370:
- // DMA direction, address type, fixed flag,
- /* fall through */
- case 0x4301:
- case 0x4311:
- case 0x4321:
- case 0x4331:
- case 0x4341:
- case 0x4351:
- case 0x4361:
- case 0x4371:
- /* fall through */
- case 0x4302:
- case 0x4312:
- case 0x4322:
- case 0x4332:
- case 0x4342:
- case 0x4352:
- case 0x4362:
- case 0x4372:
- /* fall through */
- case 0x4303:
- case 0x4313:
- case 0x4323:
- case 0x4333:
- case 0x4343:
- case 0x4353:
- case 0x4363:
- case 0x4373:
- /* fall through */
- case 0x4304:
- case 0x4314:
- case 0x4324:
- case 0x4334:
- case 0x4344:
- case 0x4354:
- case 0x4364:
- case 0x4374:
- /* fall through */
- case 0x4305:
- case 0x4315:
- case 0x4325:
- case 0x4335:
- case 0x4345:
- case 0x4355:
- case 0x4365:
- case 0x4375:
- /* fall through */
- case 0x4306:
- case 0x4316:
- case 0x4326:
- case 0x4336:
- case 0x4346:
- case 0x4356:
- case 0x4366:
- case 0x4376:
- /* fall through */
- case 0x4308:
- case 0x4318:
- case 0x4328:
- case 0x4338:
- case 0x4348:
- case 0x4358:
- case 0x4368:
- case 0x4378:
- /* fall through */
- case 0x4309:
- case 0x4319:
- case 0x4329:
- case 0x4339:
- case 0x4349:
- case 0x4359:
- case 0x4369:
- 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:
- case 0x433A:
- case 0x434A:
- case 0x435A:
- case 0x436A:
- case 0x437A:
- {
- int d = (Address & 0x70) >> 4;
- if (IPPU.HDMA & (1 << d))
- {
- return (DMA[d].LineCount);
- }
- return (Memory.FillRAM[Address]);
- }
-
- case 0x430F:
- case 0x431F:
- case 0x432F:
- case 0x433F:
- case 0x434F:
- case 0x435F:
- case 0x436F:
- case 0x437F:
- Address &= ~4; // Convert 43xF to 43xB
- /* fall through */
- case 0x430B:
- case 0x431B:
- case 0x432B:
- case 0x433B:
- case 0x434B:
- case 0x435B:
- case 0x436B:
- case 0x437B:
-
- // Unknown, but they seem to be RAM-ish
- return (Memory.FillRAM[Address]);
-
- default:
- if(Address>= 0x4800&&Settings.SPC7110)
- return S9xGetSPC7110(Address);
-
- if(Address>=0x4800&&Address<=0x4807&&Settings.SDD1)
- {
- return Memory.FillRAM[Address];
- }
-
- return OpenBus;
- }
-// return (Memory.FillRAM[Address]);
-}
-
-static void CommonPPUReset ()
-{
- PPU.BGMode = 0;
- PPU.BG3Priority = 0;
- PPU.Brightness = 0;
- PPU.VMA.High = 0;
- PPU.VMA.Increment = 1;
- PPU.VMA.Address = 0;
- PPU.VMA.FullGraphicCount = 0;
- PPU.VMA.Shift = 0;
-
- for (uint8 B = 0; B != 4; B++)
- {
- PPU.BG[B].SCBase = 0;
- PPU.BG[B].VOffset = 0;
- PPU.BG[B].HOffset = 0;
- PPU.BG[B].BGSize = 0;
- 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;
- PPU.ClipWindow1Inside[B] = TRUE;
- 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;
- PPU.ClipWindow1Inside[4] = PPU.ClipWindow1Inside[5] = TRUE;
- PPU.ClipWindow2Inside[4] = PPU.ClipWindow2Inside[5] = TRUE;
-
- PPU.CGFLIP = 0;
- int c;
- for (c = 0; c < 256; c++)
- {
- IPPU.Red [c] = (c & 7) << 2;
- IPPU.Green [c] = ((c >> 3) & 7) << 2;
- IPPU.Blue [c] = ((c >> 6) & 2) << 3;
- PPU.CGDATA [c] = IPPU.Red [c] | (IPPU.Green [c] << 5) |
- (IPPU.Blue [c] << 10);
- }
-
- PPU.FirstSprite = 0;
- PPU.LastSprite = 127;
- for (int Sprite = 0; Sprite < 128; Sprite++)
- {
- PPU.OBJ[Sprite].HPos = 0;
- PPU.OBJ[Sprite].VPos = 0;
- PPU.OBJ[Sprite].VFlip = 0;
- PPU.OBJ[Sprite].HFlip = 0;
- PPU.OBJ[Sprite].Priority = 0;
- PPU.OBJ[Sprite].Palette = 0;
- PPU.OBJ[Sprite].Name = 0;
- PPU.OBJ[Sprite].Size = 0;
- }
- PPU.OAMPriorityRotation = 0;
- PPU.OAMWriteRegister = 0;
- PPU.RangeTimeOver = 0;
- PPU.OpenBus1 = 0;
- PPU.OpenBus2 = 0;
-
- PPU.OAMFlip = 0;
- PPU.OAMTileAddress = 0;
- PPU.OAMAddr = 0;
- PPU.IRQVBeamPos = 0;
- PPU.IRQHBeamPos = 0;
- PPU.VBeamPosLatched = 0;
- PPU.HBeamPosLatched = 0;
-
- PPU.HBeamFlip = 0;
- PPU.VBeamFlip = 0;
- PPU.HVBeamCounterLatched = 0;
-
- 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;
- PPU.ScreenHeight = SNES_HEIGHT;
- PPU.WRAM = 0;
- PPU.BG_Forced = 0;
- PPU.ForcedBlanking = TRUE;
- PPU.OBJThroughMain = FALSE;
- PPU.OBJThroughSub = FALSE;
- PPU.OBJSizeSelect = 0;
- PPU.OBJNameSelect = 0;
- PPU.OBJNameBase = 0;
- PPU.OBJAddition = FALSE;
- PPU.OAMReadFlip = 0;
- PPU.BGnxOFSbyte = 0;
- ZeroMemory (PPU.OAMData, 512 + 32);
-
- PPU.VTimerEnabled = FALSE;
- PPU.HTimerEnabled = FALSE;
- PPU.HTimerPosition = Settings.H_Max + 1;
- PPU.Mosaic = 0;
- PPU.BGMosaic [0] = PPU.BGMosaic [1] = FALSE;
- PPU.BGMosaic [2] = PPU.BGMosaic [3] = FALSE;
- PPU.Mode7HFlip = FALSE;
- PPU.Mode7VFlip = FALSE;
- PPU.Mode7Repeat = 0;
- PPU.Window1Left = 1;
- PPU.Window1Right = 0;
- PPU.Window2Left = 1;
- PPU.Window2Right = 0;
- PPU.RecomputeClipWindows = TRUE;
- PPU.CGFLIPRead = 0;
- PPU.Need16x8Mulitply = FALSE;
- PPU.MouseSpeed[0] = PPU.MouseSpeed[1] = 0;
-
- IPPU.ColorsChanged = TRUE;
- IPPU.HDMA = 0;
- IPPU.HDMAStarted = FALSE;
- IPPU.MaxBrightness = 0;
- IPPU.LatchedBlanking = 0;
- IPPU.OBJChanged = TRUE;
- IPPU.RenderThisFrame = TRUE;
- IPPU.DirectColourMapsNeedRebuild = TRUE;
- IPPU.FrameCount = 0;
- IPPU.RenderedFramesCount = 0;
- 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);
-#ifdef CORRECT_VRAM_READS
- IPPU.VRAMReadBuffer = 0; // XXX: FIXME: anything better?
-#else
- IPPU.FirstVRAMRead = FALSE;
-#endif
- IPPU.Interlace = FALSE;
- IPPU.InterlaceSprites = FALSE;
- IPPU.DoubleWidthPixels = FALSE;
- IPPU.HalfWidthPixels = FALSE;
- IPPU.DoubleHeightPixels = FALSE;
- IPPU.RenderedScreenWidth = SNES_WIDTH;
- IPPU.RenderedScreenHeight = SNES_HEIGHT;
- IPPU.XB = NULL;
- for (c = 0; c < 256; c++)
- IPPU.ScreenColors [c] = c;
- S9xFixColourBrightness ();
- IPPU.PreviousLine = IPPU.CurrentLine = 0;
-
- if (Settings.ControllerOption == 0)
- IPPU.Controller = SNES_MAX_CONTROLLER_OPTIONS - 1;
- else
- IPPU.Controller = Settings.ControllerOption - 1;
- S9xNextController ();
-
- for (c = 0; c < 2; c++)
- memset (&IPPU.Clip [c], 0, sizeof (struct ClipData));
-
- if (Settings.MouseMaster)
- {
- S9xProcessMouse (0);
- S9xProcessMouse (1);
- }
-}
-
-void S9xResetPPU ()
-{
- CommonPPUReset ();
- PPU.Joypad1ButtonReadPos = 0;
- PPU.Joypad2ButtonReadPos = 0;
- PPU.Joypad3ButtonReadPos = 0;
-
- IPPU.Joypads[0] = IPPU.Joypads[1] = IPPU.Joypads[2] = 0;
- IPPU.Joypads[3] = IPPU.Joypads[4] = 0;
- IPPU.SuperScope = 0;
- IPPU.Mouse[0] = IPPU.Mouse[1] = 0;
- IPPU.PrevMouseX[0] = IPPU.PrevMouseX[1] = 256 / 2;
- IPPU.PrevMouseY[0] = IPPU.PrevMouseY[1] = 224 / 2;
-
- for (int c = 0; c < 0x8000; c += 0x100)
- {
- if ( !Settings.SuperFX )
- {
- memset (&Memory.FillRAM [c], c >> 8, 0x100);
- }
- else if ( (unsigned)c < 0x3000 || (unsigned)c >= 0x3300 )
- {
- /* Don't overwrite SFX pvRegisters at 0x3000-0x32FF,
- * they were set in FxReset.
- */
- 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 ()
-{
- CommonPPUReset ();
-// PPU.Joypad1ButtonReadPos = 0;
-// PPU.Joypad2ButtonReadPos = 0;
-// PPU.Joypad3ButtonReadPos = 0;
-
-// IPPU.Joypads[0] = IPPU.Joypads[1] = IPPU.Joypads[2] = 0;
-// IPPU.Joypads[3] = IPPU.Joypads[4] = 0;
-// IPPU.SuperScope = 0;
-// IPPU.Mouse[0] = IPPU.Mouse[1] = 0;
-// IPPU.PrevMouseX[0] = IPPU.PrevMouseX[1] = 256 / 2;
-// IPPU.PrevMouseY[0] = IPPU.PrevMouseY[1] = 224 / 2;
-
- 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)
-{
- int x, y;
- uint32 buttons;
-
- if ((IPPU.Controller == SNES_MOUSE || IPPU.Controller == SNES_MOUSE_SWAPPED) && S9xReadMousePosition (which1, x, y, buttons))
- {
- int delta_x, delta_y;
-#define MOUSE_SIGNATURE 0x1
- IPPU.Mouse [which1] = MOUSE_SIGNATURE |
- (PPU.MouseSpeed [which1] << 4) |
- ((buttons & 1) << 6) | ((buttons & 2) << 6);
-
- delta_x = x - IPPU.PrevMouseX[which1];
- delta_y = y - IPPU.PrevMouseY[which1];
-
- if (delta_x > 63)
- {
- delta_x = 63;
- IPPU.PrevMouseX[which1] += 63;
- }
- else
- if (delta_x < -63)
- {
- delta_x = -63;
- IPPU.PrevMouseX[which1] -= 63;
- }
- else
- IPPU.PrevMouseX[which1] = x;
-
- if (delta_y > 63)
- {
- delta_y = 63;
- IPPU.PrevMouseY[which1] += 63;
- }
- else
- if (delta_y < -63)
- {
- delta_y = -63;
- IPPU.PrevMouseY[which1] -= 63;
- }
- else
- IPPU.PrevMouseY[which1] = y;
-
- if (delta_x < 0)
- {
- delta_x = -delta_x;
- IPPU.Mouse [which1] |= (delta_x | 0x80) << 16;
- }
- else
- IPPU.Mouse [which1] |= delta_x << 16;
-
- if (delta_y < 0)
- {
- delta_y = -delta_y;
- IPPU.Mouse [which1] |= (delta_y | 0x80) << 24;
- }
- else
- IPPU.Mouse [which1] |= delta_y << 24;
-
- if (IPPU.Controller == SNES_MOUSE_SWAPPED)
- IPPU.Joypads [0] = IPPU.Mouse [which1];
- else
- IPPU.Joypads [1] = IPPU.Mouse [which1];
- }
-}
-
-void ProcessSuperScope ()
-{
- int x, y;
- uint32 buttons;
-
- if (IPPU.Controller == SNES_SUPERSCOPE &&
- S9xReadSuperScopePosition (x, y, buttons))
- {
-#define SUPERSCOPE_SIGNATURE 0x00ff
- uint32 scope;
-
- scope = SUPERSCOPE_SIGNATURE | ((buttons & 1) << (7 + 8)) |
- ((buttons & 2) << (5 + 8)) | ((buttons & 4) << (3 + 8)) |
- ((buttons & 8) << (1 + 8));
- if(Memory.FillRAM[0x4201]&0x80){
- x+=40;
- if (x > 295)
- x = 295;
- if (x < 40)
- x = 40;
- if (y > PPU.ScreenHeight - 1)
- y = PPU.ScreenHeight - 1;
- if (y < 0)
- y = 0;
-
- PPU.VBeamPosLatched = (uint16) (y + 1);
- PPU.HBeamPosLatched = (uint16) x;
- PPU.HVBeamCounterLatched = TRUE;
- Memory.FillRAM [0x213F] |= 0x40 | Model->_5C78;
- }
- IPPU.Joypads [1] = scope;
- }
-}
-
-void S9xNextController ()
-{
- switch (IPPU.Controller)
- {
- case SNES_MULTIPLAYER5:
- IPPU.Controller = SNES_JOYPAD;
- break;
- case SNES_JOYPAD:
- if (Settings.MouseMaster)
- {
- IPPU.Controller = SNES_MOUSE_SWAPPED;
- break;
- }
- case SNES_MOUSE_SWAPPED:
- if (Settings.MouseMaster)
- {
- IPPU.Controller = SNES_MOUSE;
- break;
- }
- case SNES_MOUSE:
- if (Settings.SuperScopeMaster)
- {
- IPPU.Controller = SNES_SUPERSCOPE;
- break;
- }
- case SNES_SUPERSCOPE:
- if (Settings.JustifierMaster)
- {
- IPPU.Controller = SNES_JUSTIFIER;
- break;
- }
- case SNES_JUSTIFIER:
- if(Settings.JustifierMaster)
- {
- IPPU.Controller=SNES_JUSTIFIER_2;
- break;
- }
- case SNES_JUSTIFIER_2:
- if(Settings.MultiPlayer5Master)
- {
- IPPU.Controller=SNES_MULTIPLAYER5;
- break;
- }
- default:
- IPPU.Controller = SNES_JOYPAD;
- break;
- }
-}
-
-void S9xUpdateJustifiers()
-{
- static bool last_p1;
- in_bit=0;
-// static int p1count;
- justifiers=0xFFFF00AA;
-
- bool offscreen=JustifierOffscreen();
-
- JustifierButtons(justifiers);
-// if(p1count==32)
-// {
- last_p1=!last_p1;
-// p1count=0;
-// }
-// p1count++;
-
- if(!last_p1)
- justifiers|=0x1000;
-
- int x,y;
- uint32 buttons;
-
- if(Memory.FillRAM[0x4201]&0x80)
- {
-
- S9xReadSuperScopePosition(x,y,buttons);
-
- x+=40;
- if (x > 295)
- x = 295;
- if (x < 40)
- x = 40;
- if (y > PPU.ScreenHeight - 1)
- y = PPU.ScreenHeight - 1;
- if (y < 0)
- y = 0;
-
- if(last_p1)
- {
-
- PPU.HVBeamCounterLatched = FALSE;
- Memory.FillRAM [0x213F] = Model->_5C78;
-
- //process latch as Justifier 2
- if(Settings.SecondJustifier)
- {
- if(IPPU.Controller==SNES_JUSTIFIER_2)
- {
- if(!offscreen)
- {
-
- PPU.VBeamPosLatched = (uint16) (y + 1);
- PPU.HBeamPosLatched = (uint16) x;
- PPU.HVBeamCounterLatched = TRUE;
- Memory.FillRAM [0x213F] |= 0x40 | Model->_5C78;
- }
- }
- }
- }
- else
- {
-
- PPU.HVBeamCounterLatched = FALSE;
- Memory.FillRAM [0x213F] = Model->_5C78;
-
- //emulate player 1.
- if(IPPU.Controller==SNES_JUSTIFIER)
- {
- if(!offscreen)
- {
- PPU.VBeamPosLatched = (uint16) (y + 1);
- PPU.HBeamPosLatched = (uint16) x;
- PPU.HVBeamCounterLatched = TRUE;
- Memory.FillRAM [0x213F] |= 0x40 | Model->_5C78;
- }
- }
- }
-
- //needs restructure
- if(!offscreen)
- {
-
- if((!last_p1&&IPPU.Controller==SNES_JUSTIFIER)||(last_p1&&IPPU.Controller==SNES_JUSTIFIER_2))
- {
- PPU.VBeamPosLatched = (uint16) (y + 1);
- PPU.HBeamPosLatched = (uint16) 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;
- }
- }
-}
-
-void S9xUpdateJoypads ()
-{
- uint32 i;
-
- for (i = 0; i < 5; i++)
- {
- IPPU.Joypads [i] = S9xReadJoypad (i);
- }
-
-// S9xMovieUpdate();
-
- for (i = 0; i < 5; i++)
- {
- if ((IPPU.Joypads [i] & (SNES_LEFT_MASK | SNES_RIGHT_MASK)) == (SNES_LEFT_MASK | SNES_RIGHT_MASK))
- IPPU.Joypads [i] &= ~SNES_RIGHT_MASK;
- if ((IPPU.Joypads [i] & (SNES_UP_MASK | SNES_DOWN_MASK)) == (SNES_UP_MASK | SNES_DOWN_MASK))
- IPPU.Joypads [i] &= ~SNES_DOWN_MASK;
- }
-
- // BJ: This is correct behavior AFAICT (used to be Touhaiden hack)
- if (IPPU.Controller == SNES_JOYPAD || IPPU.Controller == SNES_MULTIPLAYER5)
- {
- for (i = 0; i < 5; i++)
- {
- if (IPPU.Joypads [i])
- IPPU.Joypads [i] |= 0xffff0000;
- }
- }
-
- // Read mouse position if enabled
- if (Settings.MouseMaster)
- {
- for (i = 0; i < 2; i++)
- S9xProcessMouse (i);
- }
-
- // Read SuperScope if enabled
- if (Settings.SuperScopeMaster)
- ProcessSuperScope ();
-
- if (Memory.FillRAM [0x4200] & 1)
- {
- PPU.Joypad1ButtonReadPos = 16;
- if (Memory.FillRAM [0x4201] & 0x80)
- {
- PPU.Joypad2ButtonReadPos = 16;
- PPU.Joypad3ButtonReadPos = 0;
- }
- else
- {
- PPU.Joypad2ButtonReadPos = 0;
- PPU.Joypad3ButtonReadPos = 16;
- }
- int ind = Settings.SwapJoypads ? 1 : 0;
-
- Memory.FillRAM [0x4218] = (uint8) IPPU.Joypads [ind];
- Memory.FillRAM [0x4219] = (uint8) (IPPU.Joypads [ind] >> 8);
- Memory.FillRAM [0x421a] = (uint8) IPPU.Joypads [ind ^ 1];
- Memory.FillRAM [0x421b] = (uint8) (IPPU.Joypads [ind ^ 1] >> 8);
- if (Memory.FillRAM [0x4201] & 0x80)
- {
- Memory.FillRAM [0x421c] = (uint8) IPPU.Joypads [ind];
- Memory.FillRAM [0x421d] = (uint8) (IPPU.Joypads [ind] >> 8);
- Memory.FillRAM [0x421e] = (uint8) IPPU.Joypads [2];
- Memory.FillRAM [0x421f] = (uint8) (IPPU.Joypads [2] >> 8);
- }
- else
- {
- Memory.FillRAM [0x421c] = (uint8) IPPU.Joypads [3];
- Memory.FillRAM [0x421d] = (uint8) (IPPU.Joypads [3] >> 8);
- Memory.FillRAM [0x421e] = (uint8) IPPU.Joypads [4];
- Memory.FillRAM [0x421f] = (uint8) (IPPU.Joypads [4] >> 8);
- }
- }
- if(Settings.Justifier||Settings.SecondJustifier)
- {
- Memory.FillRAM [0x421a] = 0x0E;
- Memory.FillRAM [0x421b] = 0;
- S9xUpdateJustifiers();
- }
-
-}
-
-#ifndef ZSNES_FX
-void S9xSuperFXExec ()
-{
-#if 1
- if (Settings.SuperFX)
- {
- if ((Memory.FillRAM [0x3000 + GSU_SFR] & FLG_G) &&
- (Memory.FillRAM [0x3000 + GSU_SCMR] & 0x18) == 0x18)
- {
- if (!Settings.WinterGold||Settings.StarfoxHack)
- FxEmulate (~0);
- else
- FxEmulate ((Memory.FillRAM [0x3000 + GSU_CLSR] & 1) ? 700 : 350);
- int GSUStatus = Memory.FillRAM [0x3000 + GSU_SFR] |
- (Memory.FillRAM [0x3000 + GSU_SFR + 1] << 8);
- if ((GSUStatus & (FLG_G | FLG_IRQ)) == FLG_IRQ)
- {
- // Trigger a GSU IRQ.
- S9xSetIRQ (GSU_IRQ_SOURCE);
- }
- }
- }
-#else
- uint32 tmp = (Memory.FillRAM[0x3034] << 16) + *(uint16 *) &Memory.FillRAM [0x301e];
-
-#if 0
- if (tmp == 0x018428)
- {
- *(uint16 *) &SRAM [0x0064] = 0xbc00;
- *(uint16 *) &SRAM [0x002c] = 0x8000;
- }
-#endif
- if (tmp == -1)//0x018428) //0x01bfc3) //0x09edaf) //-1) //0x57edaf)
- {
- while (Memory.FillRAM [0x3030] & 0x20)
- {
- int i;
- int32 vError;
- uint8 avReg[0x40];
- char tmp[128];
- uint8 vPipe;
- uint8 vColr;
- uint8 vPor;
-
- FxPipeString (tmp);
- /* Make the string 32 chars long */
- if(strlen(tmp) < 32) { memset(&tmp[strlen(tmp)],' ',32-strlen(tmp)); tmp[32] = 0; }
-
- /* Copy registers (so we can see if any changed) */
- vColr = FxGetColorRegister();
- vPor = FxGetPlotOptionRegister();
- memcpy(avReg,SuperFX.pvRegisters,0x40);
-
- /* Print the pipe string */
- printf(tmp);
-
- /* Execute the instruction in the pipe */
- vPipe = FxPipe();
- vError = FxEmulate(1);
-
- /* Check if any registers changed (and print them if they did) */
- for(i=0; i<16; i++)
- {
- uint32 a = 0;
- uint32 r1 = ((uint32)avReg[i*2]) | (((uint32)avReg[(i*2)+1])<<8);
- uint32 r2 = (uint32)(SuperFX.pvRegisters[i*2]) | (((uint32)SuperFX.pvRegisters[(i*2)+1])<<8);
- if(i==15)
- a = OPCODE_BYTES(vPipe);
- if(((r1+a)&0xffff) != r2)
- printf(" r%d=$%04x",i,r2);
- }
- {
- /* Check SFR */
- uint32 r1 = ((uint32)avReg[0x30]) | (((uint32)avReg[0x31])<<8);
- uint32 r2 = (uint32)(SuperFX.pvRegisters[0x30]) | (((uint32)SuperFX.pvRegisters[0x31])<<8);
- if((r1&(1<<1)) != (r2&(1<<1)))
- printf(" Z=%d",(uint32)(!!(r2&(1<<1))));
- if((r1&(1<<2)) != (r2&(1<<2)))
- printf(" CY=%d",(uint32)(!!(r2&(1<<2))));
- if((r1&(1<<3)) != (r2&(1<<3)))
- printf(" S=%d",(uint32)(!!(r2&(1<<3))));
- if((r1&(1<<4)) != (r2&(1<<4)))
- printf(" OV=%d",(uint32)(!!(r2&(1<<4))));
- if((r1&(1<<5)) != (r2&(1<<5)))
- printf(" G=%d",(uint32)(!!(r2&(1<<5))));
- if((r1&(1<<6)) != (r2&(1<<6)))
- printf(" R=%d",(uint32)(!!(r2&(1<<6))));
- if((r1&(1<<8)) != (r2&(1<<8)))
- printf(" ALT1=%d",(uint32)(!!(r2&(1<<8))));
- if((r1&(1<<9)) != (r2&(1<<9)))
- printf(" ALT2=%d",(uint32)(!!(r2&(1<<9))));
- if((r1&(1<<10)) != (r2&(1<<10)))
- printf(" IL=%d",(uint32)(!!(r2&(1<<10))));
- if((r1&(1<<11)) != (r2&(1<<11)))
- printf(" IH=%d",(uint32)(!!(r2&(1<<11))));
- if((r1&(1<<12)) != (r2&(1<<12)))
- printf(" B=%d",(uint32)(!!(r2&(1<<12))));
- if((r1&(1<<15)) != (r2&(1<<15)))
- printf(" IRQ=%d",(uint32)(!!(r2&(1<<15))));
- }
- {
- /* Check PBR */
- uint32 r1 = ((uint32)avReg[0x34]);
- uint32 r2 = (uint32)(SuperFX.pvRegisters[0x34]);
- if(r1 != r2)
- printf(" PBR=$%02x",r2);
- }
- {
- /* Check ROMBR */
- uint32 r1 = ((uint32)avReg[0x36]);
- uint32 r2 = (uint32)(SuperFX.pvRegisters[0x36]);
- if(r1 != r2)
- printf(" ROMBR=$%02x",r2);
- }
- {
- /* Check RAMBR */
- uint32 r1 = ((uint32)avReg[0x3c]);
- uint32 r2 = (uint32)(SuperFX.pvRegisters[0x3c]);
- if(r1 != r2)
- printf(" RAMBR=$%02x",r2);
- }
- {
- /* Check CBR */
- uint32 r1 = ((uint32)avReg[0x3e]) | (((uint32)avReg[0x3f])<<8);
- uint32 r2 = (uint32)(SuperFX.pvRegisters[0x3e]) | (((uint32)SuperFX.pvRegisters[0x3f])<<8);
- if(r1 != r2)
- printf(" CBR=$%04x",r2);
- }
- {
- /* Check COLR */
- if(vColr != FxGetColorRegister())
- printf(" COLR=$%02x",FxGetColorRegister());
- }
- {
- /* Check POR */
- if(vPor != FxGetPlotOptionRegister())
- printf(" POR=$%02x",FxGetPlotOptionRegister());
- }
- printf ("\n");
- }
- S9xExit ();
- }
- else
- {
- uint32 t = (Memory.FillRAM [0x3034] << 16) +
- (Memory.FillRAM [0x301f] << 8) +
- (Memory.FillRAM [0x301e] << 0);
-
-printf ("%06x: %d\n", t, FxEmulate (2000000));
-// FxEmulate (2000000);
- }
-#if 0
- if (!(CPU.Flags & TRACE_FLAG))
- {
- static int z = 1;
- if (z == 0)
- {
- extern FILE *trace;
- CPU.Flags |= TRACE_FLAG;
- trace = fopen ("trace.log", "wb");
- }
- else
- z--;
- }
-#endif
- Memory.FillRAM [0x3030] &= ~0x20;
- if (Memory.FillRAM [0x3031] & 0x80)
- {
- S9xSetIRQ (GSU_IRQ_SOURCE);
- }
-#endif
-}
-#endif
-
-// Register reads and writes...
-
-uint8 REGISTER_4212()
-{
- uint8 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 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;
-}
-
-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)
- {
- PPU.VMA.Address += PPU.VMA.Increment;
- }
-// Memory.FillRAM [0x2118] = Byte;
-}
-
-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;
-}
-
-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;
-}
-
-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)
- {
- PPU.VMA.Address += PPU.VMA.Increment;
- }
-// Memory.FillRAM [0x2119] = Byte;
-}
-
-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;
-}
-
-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;
-}
-
-void REGISTER_2122(uint8 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) 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))
- {
- 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) BUILD_PIXEL (IPPU.Red [PPU.CGADD],
- IPPU.Green [PPU.CGADD],
- IPPU.Blue [PPU.CGADD]);
- }
- }
- PPU.CGFLIP ^= 1;
-// Memory.FillRAM [0x2122] = Byte;
-}
-
-void REGISTER_2180(uint8 Byte)
-{
- Memory.RAM[PPU.WRAM++] = Byte;
- PPU.WRAM &= 0x1FFFF;
- Memory.FillRAM [0x2180] = Byte;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 00:07:39 +0000