--- /dev/null
+/* FCE Ultra - NES/Famicom Emulator\r
+ *\r
+ * Copyright notice for this file:\r
+ * Copyright (C) 1998 \Firebug\\r
+ * Copyright (C) 2002 Ben Parnell\r
+ *\r
+ * This program is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 2 of the License, or\r
+ * (at your option) any later version.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this program; if not, write to the Free Software\r
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r
+ */\r
+\r
+#include <stdio.h>\r
+#include <string.h>\r
+#include <dpmi.h>\r
+#include <sys/farptr.h>\r
+#include <go32.h>\r
+#include <pc.h>\r
+\r
+#include "dos.h"\r
+#include "dos-video.h"\r
+\r
+#define TEXT 3\r
+#define G320x200x256 0x13\r
+\r
+static void vga_waitretrace(void)\r
+{ \r
+ while(inp(0x3da)&0x8); \r
+ while(!(inp(0x3da)&0x8));\r
+}\r
+\r
+static void vga_setmode(int mode)\r
+{\r
+ __dpmi_regs regs;\r
+\r
+ memset(®s,0,sizeof(regs));\r
+ regs.x.ax=mode;\r
+\r
+ __dpmi_int(0x10,®s);\r
+}\r
+\r
+void vga_setpalette(int i, int r, int g, int b)\r
+{ \r
+ outp(0x3c8,i);\r
+ outp(0x3c9,r);\r
+ outp(0x3c9,g);\r
+ outp(0x3c9,b); \r
+}\r
+\r
+int FCEUDvmode=1;\r
+\r
+static int vidready=0;\r
+\r
+/* Part of the VGA low-level mass register setting code derived from\r
+ code by \Firebug\.\r
+*/\r
+\r
+#include "vgatweak.c"\r
+\r
+void SetBorder(void)\r
+{\r
+ inportb(0x3da);\r
+ outportb(0x3c0,(0x11|0x20));\r
+ outportb(0x3c0,0x80);\r
+}\r
+\r
+void TweakVGA(int VGAMode)\r
+{\r
+ int I;\r
+ \r
+ vga_waitretrace();\r
+\r
+ outportb(0x3C8,0x00);\r
+ for(I=0;I<768;I++) outportb(0x3C9,0x00);\r
+\r
+ outportb(0x3D4,0x11);\r
+ I=inportb(0x3D5)&0x7F;\r
+ outportb(0x3D4,0x11);\r
+ outportb(0x3D5,I);\r
+\r
+ switch(VGAMode)\r
+ {\r
+ case 1: for(I=0;I<25;I++) VGAPortSet(v256x240[I]);break;\r
+ case 2: for(I=0;I<25;I++) VGAPortSet(v256x256[I]);break;\r
+ case 3: for(I=0;I<25;I++) VGAPortSet(v256x256S[I]);break;\r
+ case 6: for(I=0;I<25;I++) VGAPortSet(v256x224S[I]);break;\r
+ case 8: for(I=0;I<25;I++) VGAPortSet(v256x224_103[I]);break;\r
+ default: break;\r
+ }\r
+\r
+ outportb(0x3da,0);\r
+}\r
+\r
+\r
+static uint8 palettedbr[256],palettedbg[256],palettedbb[256];\r
+\r
+static void FlushPalette(void)\r
+{\r
+ int x;\r
+ for(x=0;x<256;x++)\r
+ {\r
+ int z=x;\r
+ vga_setpalette(z,palettedbr[x]>>2,palettedbg[x]>>2,palettedbb[x]>>2);\r
+ }\r
+}\r
+\r
+void FCEUD_SetPalette(uint8 index, uint8 r, uint8 g, uint8 b)\r
+{\r
+ palettedbr[index]=r;\r
+ palettedbg[index]=g;\r
+ palettedbb[index]=b;\r
+ if(vidready)\r
+ {\r
+ vga_setpalette(index,r>>2,g>>2,b>>2);\r
+ }\r
+}\r
+\r
+\r
+void FCEUD_GetPalette(uint8 i, uint8 *r, uint8 *g, uint8 *b)\r
+{\r
+ *r=palettedbr[i];\r
+ *g=palettedbg[i];\r
+ *b=palettedbb[i];\r
+}\r
+\r
+static uint32 ScreenLoc;\r
+\r
+int InitVideo(void)\r
+{\r
+ vidready=0;\r
+ switch(FCEUDvmode)\r
+ {\r
+ default:\r
+ case 1:\r
+ case 2:\r
+ case 3:\r
+ case 6:\r
+ case 8:\r
+ vga_setmode(G320x200x256);\r
+ vidready|=1;\r
+ ScreenLoc=0xa0000;\r
+ TweakVGA(FCEUDvmode);\r
+ SetBorder();\r
+ DOSMemSet(ScreenLoc, 128, 256*256);\r
+ break;\r
+ }\r
+ vidready|=2;\r
+ FlushPalette();\r
+ return 1;\r
+}\r
+\r
+void KillVideo(void)\r
+{\r
+ if(vidready)\r
+ {\r
+ vga_setmode(TEXT);\r
+ vidready=0;\r
+ }\r
+}\r
+void LockConsole(void){}\r
+void UnlockConsole(void){}\r
+void BlitScreen(uint8 *XBuf)\r
+{\r
+ uint32 dest;\r
+ int tlines;\r
+\r
+ if(eoptions&4 && !NoWaiting)\r
+ vga_waitretrace();\r
+\r
+ tlines=erendline-srendline+1;\r
+\r
+ dest=ScreenLoc;\r
+\r
+ switch(FCEUDvmode)\r
+ {\r
+ case 1:dest+=(((240-tlines)>>1)<<8);break;\r
+ case 2:\r
+ case 3:dest+=(((256-tlines)>>1)<<8);break;\r
+ case 4:\r
+ case 5:dest+=(((240-tlines)>>1)*640+((640-512)>>1));break;\r
+ case 8:\r
+ case 6:if(tlines>224) tlines=224;dest+=(((224-tlines)>>1)<<8);break;\r
+ }\r
+ \r
+ XBuf+=(srendline<<8)+(srendline<<4);\r
+ \r
+ _farsetsel(_dos_ds);\r
+ if(eoptions&DO_CLIPSIDES)\r
+ {\r
+ asm volatile( \r
+ "agoop1:\n\t"\r
+ "movl $30,%%eax\n\t"\r
+ "agoop2:\n\t"\r
+ "movl (%%esi),%%edx\n\t"\r
+ "movl 4(%%esi),%%ecx\n\t"\r
+ ".byte 0x64 \n\t"\r
+ "movl %%edx,(%%edi)\n\t"\r
+ ".byte 0x64 \n\t"\r
+ "movl %%ecx,4(%%edi)\n\t"\r
+ "addl $8,%%esi\n\t"\r
+ "addl $8,%%edi\n\t"\r
+ "decl %%eax\n\t"\r
+ "jne agoop2\n\t"\r
+ "addl $32,%%esi\n\t"\r
+ "addl $16,%%edi\n\t"\r
+ "decb %%bl\n\t"\r
+ "jne agoop1\n\t"\r
+ :\r
+ : "S" (XBuf+8), "D" (dest+8), "b" (tlines)\r
+ : "%eax","%cc","%edx","%ecx" );\r
+ }\r
+ else\r
+ {\r
+ asm volatile( \r
+ "goop1:\n\t"\r
+ "movl $32,%%eax\n\t"\r
+ "goop2:\n\t"\r
+ "movl (%%esi),%%edx\n\t"\r
+ "movl 4(%%esi),%%ecx\n\t"\r
+ ".byte 0x64 \n\t"\r
+ "movl %%edx,(%%edi)\n\t"\r
+ ".byte 0x64 \n\t"\r
+ "movl %%ecx,4(%%edi)\n\t"\r
+ "addl $8,%%esi\n\t"\r
+ "addl $8,%%edi\n\t"\r
+ "decl %%eax\n\t"\r
+ "jne goop2\n\t"\r
+ "addl $16,%%esi\n\t"\r
+ "decb %%bl\n\t"\r
+ "jne goop1\n\t"\r
+ :\r
+ : "S" (XBuf), "D" (dest), "b" (tlines)\r
+ : "%eax","%cc","%edx","%ecx" );\r
+ }\r
+}\r
+\r
+\r
notaz.gp2x.de / fceu.git / blobdiff