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https://github.com/dborth/fceugx.git
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1382 lines
32 KiB
C
1382 lines
32 KiB
C
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 1998 BERO
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* Copyright (C) 2003 Xodnizel
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "types.h"
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#include "x6502.h"
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#include "fceu.h"
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#include "ppu.h"
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#include "nsf.h"
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#include "sound.h"
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#include "general.h"
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#include "endian.h"
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#include "memory.h"
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#include "cart.h"
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#include "palette.h"
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#include "state.h"
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#include "video.h"
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#include "input.h"
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#define VBlankON (PPU[0]&0x80) /* Generate VBlank NMI */
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#define Sprite16 (PPU[0]&0x20) /* Sprites 8x16/8x8 */
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#define BGAdrHI (PPU[0]&0x10) /* BG pattern adr $0000/$1000 */
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#define SpAdrHI (PPU[0]&0x08) /* Sprite pattern adr $0000/$1000 */
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#define INC32 (PPU[0]&0x04) /* auto increment 1/32 */
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#define SpriteON (PPU[1]&0x10) /* Show Sprite */
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#define ScreenON (PPU[1]&0x08) /* Show screen */
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#define PPU_status (PPU[2])
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#define Pal (PALRAM)
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static void FetchSpriteData(void);
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static void FASTAPASS(1) RefreshLine(int lastpixel);
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static void RefreshSprites(void);
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static void CopySprites(uint8 *target);
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static void Fixit1(void);
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static uint32 ppulut1[256];
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static uint32 ppulut2[256];
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static uint32 ppulut3[128];
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static void makeppulut(void)
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{
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int x;
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int y;
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for(x=0;x<256;x++)
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{
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ppulut1[x]=0;
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for(y=0;y<8;y++)
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ppulut1[x]|=((x>>(7-y))&1)<<(y*4);
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ppulut2[x]=ppulut1[x]<<1;
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}
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{
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int cc,xo,pixel;
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for(cc=0;cc<16;cc++)
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{
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for(xo=0;xo<8;xo++)
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{
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ppulut3[xo|(cc<<3)]=0;
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for(pixel=0;pixel<8;pixel++)
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{
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int shiftr;
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shiftr=(pixel+xo)/8;
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shiftr*=2;
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ppulut3[xo|(cc<<3)]|=(( cc>>shiftr )&3)<<(2+pixel*4);
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}
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// printf("%08x\n",ppulut3[xo|(cc<<3)]);
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}
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}
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}
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}
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static int ppudead;
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static int kook = 0;
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int fceuindbg=0;
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int MMC5Hack;
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uint32 MMC5HackVROMMask;
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uint8 *MMC5HackExNTARAMPtr;
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uint8 *MMC5HackVROMPTR;
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uint8 MMC5HackCHRMode=0;
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uint8 MMC5HackSPMode;
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uint8 MMC5HackSPScroll;
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uint8 MMC5HackSPPage;
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uint8 VRAMBuffer,PPUGenLatch;
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uint8 *vnapage[4];
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uint8 PPUNTARAM;
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uint8 PPUCHRRAM;
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/* Color deemphasis emulation. Joy... */
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static uint8 deemp=0;
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static int deempcnt[8];
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void (*GameHBIRQHook)(void), (*GameHBIRQHook2)(void);
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void FP_FASTAPASS(1) (*PPU_hook)(uint32 A);
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uint8 vtoggle=0;
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uint8 XOffset=0;
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uint32 TempAddr,RefreshAddr;
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static int maxsprites=8;
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/* scanline is equal to the current visible scanline we're on. */
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int scanline;
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static uint32 scanlines_per_frame;
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uint8 PPU[4];
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uint8 PPUSPL;
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uint8 NTARAM[0x800],PALRAM[0x20],SPRAM[0x100],SPRBUF[0x100];
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#define MMC5SPRVRAMADR(V) &MMC5SPRVPage[(V)>>10][(V)]
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#define MMC5BGVRAMADR(V) &MMC5BGVPage[(V)>>10][(V)]
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#define VRAMADR(V) &VPage[(V)>>10][(V)]
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static DECLFR(A2002)
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{
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uint8 ret;
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FCEUPPU_LineUpdate();
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ret = PPU_status;
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ret|=PPUGenLatch&0x1F;
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if(!fceuindbg)
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{
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vtoggle=0;
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PPU_status&=0x7F;
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PPUGenLatch=ret;
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}
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return ret;
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}
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static DECLFR(A200x) /* Not correct for $2004 reads. */
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{
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FCEUPPU_LineUpdate();
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return PPUGenLatch;
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}
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/*
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static DECLFR(A2004)
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{
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uint8 ret;
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FCEUPPU_LineUpdate();
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ret = SPRAM[PPU[3]];
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if(PPUSPL>=8)
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{
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if(PPU[3]>=8)
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ret = SPRAM[PPU[3]];
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}
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else
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{
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//printf("$%02x:$%02x\n",PPUSPL,V);
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ret = SPRAM[PPUSPL];
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}
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PPU[3]++;
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PPUSPL++;
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PPUGenLatch = ret;
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printf("%d, %02x\n",scanline,ret);
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return(ret);
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}
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*/
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static DECLFR(A2007)
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{
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uint8 ret;
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uint32 tmp=RefreshAddr&0x3FFF;
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FCEUPPU_LineUpdate();
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ret=VRAMBuffer;
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if(!fceuindbg)
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{
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if(PPU_hook) PPU_hook(tmp);
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PPUGenLatch=VRAMBuffer;
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if(tmp<0x2000)
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{
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VRAMBuffer=VPage[tmp>>10][tmp];
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}
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else
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{
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VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
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}
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}
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if(!fceuindbg)
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{
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if (INC32) RefreshAddr+=32;
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else RefreshAddr++;
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if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
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}
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return ret;
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}
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static DECLFW(B2000)
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{
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//printf("%04x:$%02x, %d\n",A,V&0x38,scanline);
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FCEUPPU_LineUpdate();
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PPUGenLatch=V;
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if(!(PPU[0]&0x80) && (V&0x80) && (PPU_status&0x80))
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{
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//printf("Trigger NMI, %d, %d\n",timestamp,ppudead);
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TriggerNMI2();
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}
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PPU[0]=V;
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TempAddr&=0xF3FF;
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TempAddr|=(V&3)<<10;
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}
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static DECLFW(B2001)
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{
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//printf("%04x:$%02x, %d\n",A,V,scanline);
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FCEUPPU_LineUpdate();
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PPUGenLatch=V;
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PPU[1]=V;
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if(V&0xE0)
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deemp=V>>5;
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}
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static DECLFW(B2002)
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{
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PPUGenLatch=V;
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}
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static DECLFW(B2003)
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{
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//printf("$%04x:$%02x, %d, %d\n",A,V,timestamp,scanline);
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PPUGenLatch=V;
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PPU[3]=V;
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PPUSPL=V&0x7;
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}
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static DECLFW(B2004)
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{
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//printf("Wr: %04x:$%02x\n",A,V);
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PPUGenLatch=V;
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if(PPUSPL>=8)
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{
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if(PPU[3]>=8)
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SPRAM[PPU[3]]=V;
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}
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else
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{
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//printf("$%02x:$%02x\n",PPUSPL,V);
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SPRAM[PPUSPL]=V;
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}
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PPU[3]++;
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PPUSPL++;
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}
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static DECLFW(B2005)
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{
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uint32 tmp=TempAddr;
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FCEUPPU_LineUpdate();
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PPUGenLatch=V;
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if (!vtoggle)
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{
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tmp&=0xFFE0;
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tmp|=V>>3;
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XOffset=V&7;
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}
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else
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{
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tmp&=0x8C1F;
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tmp|=((V&~0x7)<<2);
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tmp|=(V&7)<<12;
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}
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TempAddr=tmp;
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vtoggle^=1;
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}
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static DECLFW(B2006)
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{
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FCEUPPU_LineUpdate();
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PPUGenLatch=V;
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if(!vtoggle)
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{
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TempAddr&=0x00FF;
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TempAddr|=(V&0x3f)<<8;
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}
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else
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{
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TempAddr&=0xFF00;
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TempAddr|=V;
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RefreshAddr=TempAddr;
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if(PPU_hook)
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PPU_hook(RefreshAddr);
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//printf("%d, %04x\n",scanline,RefreshAddr);
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}
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vtoggle^=1;
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}
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static DECLFW(B2007)
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{
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uint32 tmp=RefreshAddr&0x3FFF;
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PPUGenLatch=V;
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if(tmp>=0x3F00)
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{
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// hmmm....
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if(!(tmp&0xf))
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PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=V&0x3F;
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else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
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}
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else if(tmp<0x2000)
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{
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if(PPUCHRRAM&(1<<(tmp>>10)))
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VPage[tmp>>10][tmp]=V;
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}
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else
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{
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if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
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vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
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}
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if (INC32) RefreshAddr+=32;
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else RefreshAddr++;
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if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
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}
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static DECLFW(B4014)
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{
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uint32 t=V<<8;
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int x;
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for(x=0;x<256;x++)
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X6502_DMW(0x2004,X6502_DMR(t+x));
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}
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#define PAL(c) ((c)+cc)
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#define GETLASTPIXEL (PAL?((timestamp*48-linestartts)/15) : ((timestamp*48-linestartts)>>4) )
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static uint8 *Pline,*Plinef;
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static int firsttile;
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static int linestartts;
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static int tofix=0;
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static void ResetRL(uint8 *target)
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{
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if(InputScanlineHook)
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InputScanlineHook(0,0,0,0);
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Plinef=target;
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Pline=target;
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firsttile=0;
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linestartts=timestamp*48+X.count;
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tofix=0;
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FCEUPPU_LineUpdate();
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tofix=1;
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}
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static uint8 sprlinebuf[256+8];
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void FCEUPPU_LineUpdate(void)
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{
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if(Pline && !fceuindbg)
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{
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int l=GETLASTPIXEL;
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RefreshLine(l);
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}
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}
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static int tileview=0;
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static int rendis = 0;
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void FCEUI_ToggleTileView(void)
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{
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tileview^=1;
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}
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void FCEUI_SetRenderDisable(int sprites, int bg)
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{
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//printf("%d, %d\n",sprites,bg);
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if(sprites >= 0)
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{
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if(sprites == 2) rendis ^= 1;
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else rendis = (rendis &~1) | sprites?1:0;
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}
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if(bg >= 0)
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{
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if(bg == 2) rendis ^= 2;
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else rendis = (rendis &~2) | bg?2:0;
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}
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}
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/*
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static void TileView(void)
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{
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uint8 *P=XBuf+16*256;
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int bgh;
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int y;
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int X1;
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for(bgh=0;bgh<2;bgh++)
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for(y=0;y<16*8;y++)
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for(P=XBuf+bgh*128+(16+y)*256,X1=16;X1;X1--,P+=8)
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{
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uint8 *C;
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register uint8 cc;
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uint32 vadr;
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vadr=((((16-X1)|((y>>3)<<4))<<4)|(y&7))+bgh*0x1000;
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//C= ROM+vadr+turt*8192;
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C = VRAMADR(vadr);
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//if((vadr+turt*8192)>=524288)
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//printf("%d ",vadr+turt*8192);
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cc=0;
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//#include "pputile.h"
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}
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}
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*/
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static void CheckSpriteHit(int p);
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static void EndRL(void)
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{
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RefreshLine(272);
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if(tofix)
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Fixit1();
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CheckSpriteHit(272);
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Pline=0;
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}
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static int32 sphitx;
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static uint8 sphitdata;
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static void CheckSpriteHit(int p)
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{
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int l=p-16;
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int x;
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if(sphitx==0x100) return;
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for(x=sphitx;x<(sphitx+8) && x<l;x++)
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if((sphitdata&(0x80>>(x-sphitx))) && !(Plinef[x]&64))
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{
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PPU_status|=0x40;
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//printf("Ha: %d, %d, Hita: %d, %d, %d, %d, %d\n",p,p&~7,scanline,GETLASTPIXEL-16,&Plinef[x],Pline,Pline-Plinef);
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sphitx=0x100;
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break;
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}
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}
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static int spork=0; /* spork the world. Any sprites on this line?
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Then this will be set to 1. Needed for zapper
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emulation and *gasp* sprite emulation.
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*/
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// lasttile is really "second to last tile."
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static void FASTAPASS(1) RefreshLine(int lastpixel)
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{
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static uint32 pshift[2];
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static uint32 atlatch;
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uint32 smorkus=RefreshAddr;
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#define RefreshAddr smorkus
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uint32 vofs;
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int X1;
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register uint8 *P=Pline;
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int lasttile=lastpixel>>3;
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int numtiles;
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static int norecurse=0; /* Yeah, recursion would be bad.
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PPU_hook() functions can call
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mirroring/chr bank switching functions,
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which call FCEUPPU_LineUpdate, which call this
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function. */
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if(norecurse) return;
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if(lasttile>34) lasttile=34;
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numtiles=lasttile-firsttile;
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if(numtiles<=0) return;
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P=Pline;
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vofs=0;
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vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
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if(!ScreenON && !SpriteON)
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{
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uint32 tem;
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tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
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tem|=0x40404040;
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FCEU_dwmemset(Pline,tem,numtiles*8);
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P+=numtiles*8;
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Pline=P;
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firsttile=lasttile;
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#define TOFIXNUM (272-0x4)
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if(lastpixel>=TOFIXNUM && tofix)
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{
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Fixit1();
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tofix=0;
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}
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if(InputScanlineHook && (lastpixel-16)>=0)
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{
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InputScanlineHook(Plinef,spork?sprlinebuf:0,linestartts,lasttile*8-16);
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}
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return;
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}
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/* Priority bits, needed for sprite emulation. */
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Pal[0]|=64;
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Pal[4]|=64;
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Pal[8]|=64;
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Pal[0xC]|=64;
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/* This high-level graphics MMC5 emulation code was written
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for MMC5 carts in "CL" mode. It's probably not totally
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correct for carts in "SL" mode.
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*/
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|
|
#define PPUT_MMC5
|
|
if(MMC5Hack && geniestage!=1)
|
|
{
|
|
if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
|
|
{
|
|
int tochange=MMC5HackSPMode&0x1F;
|
|
tochange-=firsttile;
|
|
for(X1=firsttile;X1<lasttile;X1++)
|
|
{
|
|
if((tochange<=0 && MMC5HackSPMode&0x40) || (tochange>0 && !(MMC5HackSPMode&0x40)))
|
|
{
|
|
#define PPUT_MMC5SP
|
|
#include "pputile.h"
|
|
#undef PPUT_MMC5SP
|
|
}
|
|
else
|
|
{
|
|
#include "pputile.h"
|
|
}
|
|
tochange--;
|
|
}
|
|
}
|
|
else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
|
|
{
|
|
int tochange=MMC5HackSPMode&0x1F;
|
|
tochange-=firsttile;
|
|
|
|
#define PPUT_MMC5SP
|
|
#define PPUT_MMC5CHR1
|
|
for(X1=firsttile;X1<lasttile;X1++)
|
|
{
|
|
#include "pputile.h"
|
|
}
|
|
#undef PPUT_MMC5CHR1
|
|
#undef PPUT_MMC5SP
|
|
}
|
|
else if(MMC5HackCHRMode==1)
|
|
{
|
|
#define PPUT_MMC5CHR1
|
|
for(X1=firsttile;X1<lasttile;X1++)
|
|
{
|
|
#include "pputile.h"
|
|
}
|
|
#undef PPUT_MMC5CHR1
|
|
}
|
|
else
|
|
{
|
|
for(X1=firsttile;X1<lasttile;X1++)
|
|
{
|
|
#include "pputile.h"
|
|
}
|
|
}
|
|
}
|
|
#undef PPUT_MMC5
|
|
else if(PPU_hook)
|
|
{
|
|
norecurse=1;
|
|
#define PPUT_HOOK
|
|
for(X1=firsttile;X1<lasttile;X1++)
|
|
{
|
|
#include "pputile.h"
|
|
}
|
|
#undef PPUT_HOOK
|
|
norecurse=0;
|
|
}
|
|
else
|
|
{
|
|
for(X1=firsttile;X1<lasttile;X1++)
|
|
{
|
|
#include "pputile.h"
|
|
}
|
|
}
|
|
|
|
#undef vofs
|
|
#undef RefreshAddr
|
|
|
|
/* Reverse changes made before. */
|
|
Pal[0]&=63;
|
|
Pal[4]&=63;
|
|
Pal[8]&=63;
|
|
Pal[0xC]&=63;
|
|
|
|
RefreshAddr=smorkus;
|
|
if(firsttile<=2 && 2<lasttile && !(PPU[1]&2))
|
|
{
|
|
uint32 tem;
|
|
tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
|
|
tem|=0x40404040;
|
|
*(uint32 *)Plinef=*(uint32 *)(Plinef+4)=tem;
|
|
}
|
|
|
|
if(!ScreenON)
|
|
{
|
|
uint32 tem;
|
|
int tstart,tcount;
|
|
tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
|
|
tem|=0x40404040;
|
|
|
|
tcount=lasttile-firsttile;
|
|
tstart=firsttile-2;
|
|
if(tstart<0)
|
|
{
|
|
tcount+=tstart;
|
|
tstart=0;
|
|
}
|
|
if(tcount>0)
|
|
FCEU_dwmemset(Plinef+tstart*8,tem,tcount*8);
|
|
}
|
|
|
|
if(lastpixel>=TOFIXNUM && tofix)
|
|
{
|
|
//puts("Fixed");
|
|
Fixit1();
|
|
tofix=0;
|
|
}
|
|
|
|
CheckSpriteHit(lasttile*8); //lasttile*8); //lastpixel);
|
|
if(InputScanlineHook && (lastpixel-16)>=0)
|
|
{
|
|
InputScanlineHook(Plinef,spork?sprlinebuf:0,linestartts,lasttile*8-16);
|
|
}
|
|
Pline=P;
|
|
firsttile=lasttile;
|
|
}
|
|
|
|
static INLINE void Fixit2(void)
|
|
{
|
|
if(ScreenON || SpriteON)
|
|
{
|
|
uint32 rad=RefreshAddr;
|
|
rad&=0xFBE0;
|
|
rad|=TempAddr&0x041f;
|
|
RefreshAddr=rad;
|
|
//PPU_hook(RefreshAddr);
|
|
//PPU_hook(RefreshAddr,-1);
|
|
}
|
|
}
|
|
|
|
static void Fixit1(void)
|
|
{
|
|
if(ScreenON || SpriteON)
|
|
{
|
|
uint32 rad=RefreshAddr;
|
|
|
|
if((rad&0x7000)==0x7000)
|
|
{
|
|
rad^=0x7000;
|
|
if((rad&0x3E0)==0x3A0)
|
|
{
|
|
rad^=0x3A0;
|
|
rad^=0x800;
|
|
}
|
|
else
|
|
{
|
|
if((rad&0x3E0)==0x3e0)
|
|
rad^=0x3e0;
|
|
else rad+=0x20;
|
|
}
|
|
}
|
|
else
|
|
rad+=0x1000;
|
|
RefreshAddr=rad;
|
|
//PPU_hook(RefreshAddr); //,-1);
|
|
}
|
|
}
|
|
|
|
void MMC5_hb(int); /* Ugh ugh ugh. */
|
|
static void DoLine(void)
|
|
{
|
|
int x;
|
|
uint8 *target=XBuf+(scanline<<8);
|
|
|
|
if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
|
|
|
|
X6502_Run(256);
|
|
EndRL();
|
|
|
|
if(rendis & 2) /* User asked to not display background data. */
|
|
{
|
|
uint32 tem;
|
|
tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
|
|
tem|=0x40404040;
|
|
FCEU_dwmemset(target,tem,256);
|
|
}
|
|
|
|
if(SpriteON)
|
|
CopySprites(target);
|
|
|
|
if(ScreenON || SpriteON) // Yes, very el-cheapo.
|
|
{
|
|
if(PPU[1]&0x01)
|
|
{
|
|
for(x=63;x>=0;x--)
|
|
*(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x30303030;
|
|
}
|
|
}
|
|
if((PPU[1]>>5)==0x7)
|
|
{
|
|
for(x=63;x>=0;x--)
|
|
*(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0xc0c0c0c0;
|
|
}
|
|
else if(PPU[1]&0xE0)
|
|
for(x=63;x>=0;x--)
|
|
*(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0x40404040;
|
|
else
|
|
for(x=63;x>=0;x--)
|
|
*(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x80808080;
|
|
|
|
sphitx=0x100;
|
|
|
|
if(ScreenON || SpriteON)
|
|
FetchSpriteData();
|
|
|
|
if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18))
|
|
{
|
|
X6502_Run(6);
|
|
Fixit2();
|
|
X6502_Run(4);
|
|
GameHBIRQHook();
|
|
X6502_Run(85-16-10);
|
|
}
|
|
else
|
|
{
|
|
X6502_Run(6); // Tried 65, caused problems with Slalom(maybe others)
|
|
Fixit2();
|
|
X6502_Run(85-6-16);
|
|
|
|
// A semi-hack for Star Trek: 25th Anniversary
|
|
if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18))
|
|
GameHBIRQHook();
|
|
}
|
|
|
|
if(SpriteON)
|
|
RefreshSprites();
|
|
if(GameHBIRQHook2 && (ScreenON || SpriteON))
|
|
GameHBIRQHook2();
|
|
scanline++;
|
|
if(scanline<240)
|
|
{
|
|
ResetRL(XBuf+(scanline<<8));
|
|
}
|
|
X6502_Run(16);
|
|
}
|
|
|
|
#define V_FLIP 0x80
|
|
#define H_FLIP 0x40
|
|
#define SP_BACK 0x20
|
|
|
|
typedef struct {
|
|
uint8 y,no,atr,x;
|
|
} SPR;
|
|
|
|
typedef struct {
|
|
uint8 ca[2],atr,x;
|
|
} SPRB;
|
|
|
|
void FCEUI_DisableSpriteLimitation(int a)
|
|
{
|
|
maxsprites=a?64:8;
|
|
}
|
|
|
|
static uint8 numsprites,SpriteBlurp;
|
|
static void FetchSpriteData(void)
|
|
{
|
|
uint8 ns,sb;
|
|
SPR *spr;
|
|
uint8 H;
|
|
int n;
|
|
int vofs;
|
|
uint8 P0=PPU[0];
|
|
|
|
spr=(SPR *)SPRAM;
|
|
H=8;
|
|
|
|
ns=sb=0;
|
|
|
|
vofs=(unsigned int)(P0&0x8&(((P0&0x20)^0x20)>>2))<<9;
|
|
H+=(P0&0x20)>>2;
|
|
|
|
if(!PPU_hook)
|
|
for(n=63;n>=0;n--,spr++)
|
|
{
|
|
if((unsigned int)(scanline-spr->y)>=H) continue;
|
|
//printf("%d, %u\n",scanline,(unsigned int)(scanline-spr->y));
|
|
if(ns<maxsprites)
|
|
{
|
|
if(n==63) sb=1;
|
|
|
|
{
|
|
SPRB dst;
|
|
uint8 *C;
|
|
int t;
|
|
unsigned int vadr;
|
|
|
|
t = (int)scanline-(spr->y);
|
|
|
|
if (Sprite16)
|
|
vadr = ((spr->no&1)<<12) + ((spr->no&0xFE)<<4);
|
|
else
|
|
vadr = (spr->no<<4)+vofs;
|
|
|
|
if (spr->atr&V_FLIP)
|
|
{
|
|
vadr+=7;
|
|
vadr-=t;
|
|
vadr+=(P0&0x20)>>1;
|
|
vadr-=t&8;
|
|
}
|
|
else
|
|
{
|
|
vadr+=t;
|
|
vadr+=t&8;
|
|
}
|
|
|
|
/* Fix this geniestage hack */
|
|
if(MMC5Hack && geniestage!=1) C = MMC5SPRVRAMADR(vadr);
|
|
else C = VRAMADR(vadr);
|
|
|
|
|
|
dst.ca[0]=C[0];
|
|
dst.ca[1]=C[8];
|
|
dst.x=spr->x;
|
|
dst.atr=spr->atr;
|
|
|
|
*(uint32 *)&SPRBUF[ns<<2]=*(uint32 *)&dst;
|
|
}
|
|
|
|
ns++;
|
|
}
|
|
else
|
|
{
|
|
PPU_status|=0x20;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
for(n=63;n>=0;n--,spr++)
|
|
{
|
|
if((unsigned int)(scanline-spr->y)>=H) continue;
|
|
|
|
if(ns<maxsprites)
|
|
{
|
|
if(n==63) sb=1;
|
|
|
|
{
|
|
SPRB dst;
|
|
uint8 *C;
|
|
int t;
|
|
unsigned int vadr;
|
|
|
|
t = (int)scanline-(spr->y);
|
|
|
|
if (Sprite16)
|
|
vadr = ((spr->no&1)<<12) + ((spr->no&0xFE)<<4);
|
|
else
|
|
vadr = (spr->no<<4)+vofs;
|
|
|
|
if (spr->atr&V_FLIP)
|
|
{
|
|
vadr+=7;
|
|
vadr-=t;
|
|
vadr+=(P0&0x20)>>1;
|
|
vadr-=t&8;
|
|
}
|
|
else
|
|
{
|
|
vadr+=t;
|
|
vadr+=t&8;
|
|
}
|
|
|
|
if(MMC5Hack) C = MMC5SPRVRAMADR(vadr);
|
|
else C = VRAMADR(vadr);
|
|
dst.ca[0]=C[0];
|
|
if(ns<8)
|
|
{
|
|
PPU_hook(0x2000);
|
|
PPU_hook(vadr);
|
|
}
|
|
dst.ca[1]=C[8];
|
|
dst.x=spr->x;
|
|
dst.atr=spr->atr;
|
|
|
|
|
|
*(uint32 *)&SPRBUF[ns<<2]=*(uint32 *)&dst;
|
|
}
|
|
|
|
ns++;
|
|
}
|
|
else
|
|
{
|
|
PPU_status|=0x20;
|
|
break;
|
|
}
|
|
}
|
|
//if(ns>=7)
|
|
//printf("%d %d\n",scanline,ns);
|
|
if(ns>8) PPU_status|=0x20; /* Handle case when >8 sprites per
|
|
scanline option is enabled. */
|
|
else if(PPU_hook)
|
|
{
|
|
for(n=0;n<(8-ns);n++)
|
|
{
|
|
PPU_hook(0x2000);
|
|
PPU_hook(vofs);
|
|
}
|
|
}
|
|
numsprites=ns;
|
|
SpriteBlurp=sb;
|
|
}
|
|
|
|
static void RefreshSprites(void)
|
|
{
|
|
int n;
|
|
SPRB *spr;
|
|
|
|
spork=0;
|
|
if(!numsprites) return;
|
|
|
|
FCEU_dwmemset(sprlinebuf,0x80808080,256);
|
|
numsprites--;
|
|
spr = (SPRB*)SPRBUF+numsprites;
|
|
|
|
for(n=numsprites;n>=0;n--,spr--)
|
|
{
|
|
register uint32 pixdata;
|
|
register uint8 J,atr;
|
|
int x=spr->x;
|
|
uint8 *C;
|
|
uint8 *VB;
|
|
|
|
pixdata=ppulut1[spr->ca[0]]|ppulut2[spr->ca[1]];
|
|
J=spr->ca[0]|spr->ca[1];
|
|
atr=spr->atr;
|
|
|
|
if(J)
|
|
{
|
|
if(n==0 && SpriteBlurp && !(PPU_status&0x40))
|
|
{
|
|
sphitx=x;
|
|
sphitdata=J;
|
|
if(atr&H_FLIP)
|
|
sphitdata= ((J<<7)&0x80) |
|
|
((J<<5)&0x40) |
|
|
((J<<3)&0x20) |
|
|
((J<<1)&0x10) |
|
|
((J>>1)&0x08) |
|
|
((J>>3)&0x04) |
|
|
((J>>5)&0x02) |
|
|
((J>>7)&0x01);
|
|
}
|
|
|
|
C = sprlinebuf+x;
|
|
VB = (PALRAM+0x10)+((atr&3)<<2);
|
|
|
|
if(atr&SP_BACK)
|
|
{
|
|
if (atr&H_FLIP)
|
|
{
|
|
if(J&0x80) C[7]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x40) C[6]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x20) C[5]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x10) C[4]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x08) C[3]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x04) C[2]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x02) C[1]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x01) C[0]=VB[pixdata]|0x40;
|
|
} else {
|
|
if(J&0x80) C[0]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x40) C[1]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x20) C[2]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x10) C[3]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x08) C[4]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x04) C[5]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x02) C[6]=VB[pixdata&3]|0x40;
|
|
pixdata>>=4;
|
|
if(J&0x01) C[7]=VB[pixdata]|0x40;
|
|
}
|
|
} else {
|
|
if (atr&H_FLIP)
|
|
{
|
|
if(J&0x80) C[7]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x40) C[6]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x20) C[5]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x10) C[4]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x08) C[3]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x04) C[2]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x02) C[1]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x01) C[0]=VB[pixdata];
|
|
}else{
|
|
if(J&0x80) C[0]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x40) C[1]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x20) C[2]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x10) C[3]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x08) C[4]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x04) C[5]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x02) C[6]=VB[pixdata&3];
|
|
pixdata>>=4;
|
|
if(J&0x01) C[7]=VB[pixdata];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
SpriteBlurp=0;
|
|
spork=1;
|
|
}
|
|
|
|
static void CopySprites(uint8 *target)
|
|
{
|
|
uint8 n=((PPU[1]&4)^4)<<1;
|
|
uint8 *P=target;
|
|
|
|
if(!spork) return;
|
|
spork=0;
|
|
|
|
if(rendis & 1) return; /* User asked to not display sprites. */
|
|
loopskie:
|
|
{
|
|
uint32 t=*(uint32 *)(sprlinebuf+n);
|
|
|
|
if(t!=0x80808080)
|
|
{
|
|
#ifdef LSB_FIRST
|
|
if(!(t&0x80))
|
|
{
|
|
if(!(t&0x40) || (P[n]&64)) // Normal sprite || behind bg sprite
|
|
P[n]=sprlinebuf[n];
|
|
}
|
|
|
|
if(!(t&0x8000))
|
|
{
|
|
if(!(t&0x4000) || (P[n+1]&64)) // Normal sprite || behind bg sprite
|
|
P[n+1]=(sprlinebuf+1)[n];
|
|
}
|
|
|
|
if(!(t&0x800000))
|
|
{
|
|
if(!(t&0x400000) || (P[n+2]&64)) // Normal sprite || behind bg sprite
|
|
P[n+2]=(sprlinebuf+2)[n];
|
|
}
|
|
|
|
if(!(t&0x80000000))
|
|
{
|
|
if(!(t&0x40000000) || (P[n+3]&64)) // Normal sprite || behind bg sprite
|
|
P[n+3]=(sprlinebuf+3)[n];
|
|
}
|
|
#else
|
|
/* TODO: Simplify */
|
|
if(!(t&0x80000000))
|
|
{
|
|
if(!(t&0x40000000)) // Normal sprite
|
|
P[n]=sprlinebuf[n];
|
|
else if(P[n]&64) // behind bg sprite
|
|
P[n]=sprlinebuf[n];
|
|
}
|
|
|
|
if(!(t&0x800000))
|
|
{
|
|
if(!(t&0x400000)) // Normal sprite
|
|
P[n+1]=(sprlinebuf+1)[n];
|
|
else if(P[n+1]&64) // behind bg sprite
|
|
P[n+1]=(sprlinebuf+1)[n];
|
|
}
|
|
|
|
if(!(t&0x8000))
|
|
{
|
|
if(!(t&0x4000)) // Normal sprite
|
|
P[n+2]=(sprlinebuf+2)[n];
|
|
else if(P[n+2]&64) // behind bg sprite
|
|
P[n+2]=(sprlinebuf+2)[n];
|
|
}
|
|
|
|
if(!(t&0x80))
|
|
{
|
|
if(!(t&0x40)) // Normal sprite
|
|
P[n+3]=(sprlinebuf+3)[n];
|
|
else if(P[n+3]&64) // behind bg sprite
|
|
P[n+3]=(sprlinebuf+3)[n];
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
n+=4;
|
|
if(n) goto loopskie;
|
|
}
|
|
|
|
void FCEUPPU_SetVideoSystem(int w)
|
|
{
|
|
if(w)
|
|
{
|
|
scanlines_per_frame=312;
|
|
FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
|
|
FSettings.LastSLine=FSettings.UsrLastSLine[1];
|
|
}
|
|
else
|
|
{
|
|
scanlines_per_frame=262;
|
|
FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
|
|
FSettings.LastSLine=FSettings.UsrLastSLine[0];
|
|
}
|
|
}
|
|
|
|
void FCEUPPU_Init(void)
|
|
{
|
|
makeppulut();
|
|
}
|
|
|
|
void FCEUPPU_Reset(void)
|
|
{
|
|
VRAMBuffer=PPU[0]=PPU[1]=PPU_status=PPU[3]=0;
|
|
PPUSPL=0;
|
|
PPUGenLatch=0;
|
|
RefreshAddr=TempAddr=0;
|
|
vtoggle = 0;
|
|
ppudead = 2;
|
|
kook = 0;
|
|
}
|
|
|
|
void FCEUPPU_Power(void)
|
|
{
|
|
int x;
|
|
|
|
memset(NTARAM,0x00,0x800);
|
|
memset(PALRAM,0x00,0x20);
|
|
memset(SPRAM,0x00,0x100);
|
|
FCEUPPU_Reset();
|
|
|
|
for(x=0x2000;x<0x4000;x+=8)
|
|
{
|
|
ARead[x]=A200x;
|
|
BWrite[x]=B2000;
|
|
ARead[x+1]=A200x;
|
|
BWrite[x+1]=B2001;
|
|
ARead[x+2]=A2002;
|
|
BWrite[x+2]=B2002;
|
|
ARead[x+3]=A200x;
|
|
BWrite[x+3]=B2003;
|
|
ARead[x+4]=A200x; //A2004;
|
|
BWrite[x+4]=B2004;
|
|
ARead[x+5]=A200x;
|
|
BWrite[x+5]=B2005;
|
|
ARead[x+6]=A200x;
|
|
BWrite[x+6]=B2006;
|
|
ARead[x+7]=A2007;
|
|
BWrite[x+7]=B2007;
|
|
}
|
|
BWrite[0x4014]=B4014;
|
|
}
|
|
|
|
|
|
int FCEUPPU_Loop(int skip)
|
|
{
|
|
if(ppudead) /* Needed for Knight Rider, possibly others. */
|
|
{
|
|
memset(XBuf, 0x80, 256*240);
|
|
X6502_Run(scanlines_per_frame*(256+85));
|
|
ppudead--;
|
|
}
|
|
else
|
|
{
|
|
X6502_Run(256+85);
|
|
PPU_status |= 0x80;
|
|
PPU[3]=PPUSPL=0; /* Not sure if this is correct. According
|
|
to Matt Conte and my own tests, it is. Timing is probably
|
|
off, though. NOTE: Not having this here
|
|
breaks a Super Donkey Kong game. */
|
|
/* I need to figure out the true nature and length
|
|
of this delay.
|
|
*/
|
|
X6502_Run(12);
|
|
if(FCEUGameInfo->type==GIT_NSF)
|
|
DoNSFFrame();
|
|
else
|
|
{
|
|
if(VBlankON)
|
|
TriggerNMI();
|
|
}
|
|
X6502_Run((scanlines_per_frame-242)*(256+85)-12); //-12);
|
|
PPU_status&=0x1f;
|
|
X6502_Run(256);
|
|
|
|
{
|
|
int x;
|
|
|
|
if(ScreenON || SpriteON)
|
|
{
|
|
if(GameHBIRQHook && ((PPU[0]&0x38)!=0x18))
|
|
GameHBIRQHook();
|
|
if(PPU_hook)
|
|
for(x=0;x<42;x++) {PPU_hook(0x2000); PPU_hook(0);}
|
|
if(GameHBIRQHook2)
|
|
GameHBIRQHook2();
|
|
}
|
|
X6502_Run(85-16);
|
|
if(ScreenON || SpriteON)
|
|
{
|
|
RefreshAddr=TempAddr;
|
|
if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
|
|
}
|
|
|
|
/* Clean this stuff up later. */
|
|
spork=numsprites=0;
|
|
ResetRL(XBuf);
|
|
|
|
X6502_Run(16-kook);
|
|
kook ^= 1;
|
|
}
|
|
if(FCEUGameInfo->type==GIT_NSF)
|
|
X6502_Run((256+85)*240);
|
|
#ifdef FRAMESKIP
|
|
else if(skip)
|
|
{
|
|
int y;
|
|
|
|
y=SPRAM[0];
|
|
y++;
|
|
|
|
PPU_status|=0x20; // Fixes "Bee 52". Does it break anything?
|
|
if(GameHBIRQHook)
|
|
{
|
|
X6502_Run(256);
|
|
for(scanline=0;scanline<240;scanline++)
|
|
{
|
|
if(ScreenON || SpriteON)
|
|
GameHBIRQHook();
|
|
if(scanline==y && SpriteON) PPU_status|=0x40;
|
|
X6502_Run((scanline==239)?85:(256+85));
|
|
}
|
|
}
|
|
else if(y<240)
|
|
{
|
|
X6502_Run((256+85)*y);
|
|
if(SpriteON) PPU_status|=0x40; // Quick and very dirty hack.
|
|
X6502_Run((256+85)*(240-y));
|
|
}
|
|
else
|
|
X6502_Run((256+85)*240);
|
|
}
|
|
#endif
|
|
else
|
|
{
|
|
int x,max,maxref;
|
|
|
|
deemp=PPU[1]>>5;
|
|
for(scanline=0;scanline<240;) //scanline is incremented in DoLine. Evil. :/
|
|
{
|
|
deempcnt[deemp]++;
|
|
DoLine();
|
|
}
|
|
if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
|
|
for(x=1,max=0,maxref=0;x<7;x++)
|
|
{
|
|
if(deempcnt[x]>max)
|
|
{
|
|
max=deempcnt[x];
|
|
maxref=x;
|
|
}
|
|
deempcnt[x]=0;
|
|
}
|
|
//FCEU_DispMessage("%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x %d",deempcnt[0],deempcnt[1],deempcnt[2],deempcnt[3],deempcnt[4],deempcnt[5],deempcnt[6],deempcnt[7],maxref);
|
|
//memset(deempcnt,0,sizeof(deempcnt));
|
|
SetNESDeemph(maxref,0);
|
|
}
|
|
} /* else... to if(ppudead) */
|
|
|
|
#ifdef FRAMESKIP
|
|
if(skip)
|
|
{
|
|
FCEU_PutImageDummy();
|
|
return(0);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
//if(tileview) TileView();
|
|
FCEU_PutImage();
|
|
return(1);
|
|
}
|
|
}
|
|
|
|
static uint16 TempAddrT,RefreshAddrT;
|
|
|
|
void FCEUPPU_LoadState(int version)
|
|
{
|
|
TempAddr=TempAddrT;
|
|
RefreshAddr=RefreshAddrT;
|
|
}
|
|
|
|
SFORMAT FCEUPPU_STATEINFO[]={
|
|
{ NTARAM, 0x800, "NTAR"},
|
|
{ PALRAM, 0x20, "PRAM"},
|
|
{ SPRAM, 0x100, "SPRA"},
|
|
{ PPU, 0x4, "PPUR"},
|
|
{ &kook, 1, "KOOK"},
|
|
{ &ppudead, 1, "DEAD"},
|
|
{ &PPUSPL, 1, "PSPL"},
|
|
{ &XOffset, 1, "XOFF"},
|
|
{ &vtoggle, 1, "VTOG"},
|
|
{ &RefreshAddrT, 2|FCEUSTATE_RLSB, "RADD"},
|
|
{ &TempAddrT, 2|FCEUSTATE_RLSB, "TADD"},
|
|
{ &VRAMBuffer, 1, "VBUF"},
|
|
{ &PPUGenLatch, 1, "PGEN"},
|
|
{ 0 }
|
|
};
|
|
|
|
void FCEUPPU_SaveState(void)
|
|
{
|
|
TempAddrT=TempAddr;
|
|
RefreshAddrT=RefreshAddr;
|
|
}
|