-/* FCE Ultra - NES/Famicom Emulator
- *
- * Copyright notice for this file:
- * Copyright (C) 1998 BERO
- * Copyright (C) 2002 Ben Parnell
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifdef C80x86
-{
- int dummy,dummy1,dummy2;
- __asm__ __volatile__(
- "xorl %%edx,%%edx\n\t"
- "movb (%%esi),%%cl\n\t"
- "movb 8(%%esi),%%dl\n\t"
- "movl %%ebx,%%esi\n\t"
- "addl %%eax,%%esi\n\t"
- "xorl %%ebx,%%ebx\n\t"
- "movb %%cl,%%bl\n\t"
- "movb %%dl,%%al\n\t"
- "shrb $1,%%bl\n\t"
- "andb $0xaa,%%al\n\t"
- "andb $0x55,%%bl\n\t"
-
- "andb $0x55,%%cl\n\t"
- "shlb $1,%%dl\n\t"
- "andb $0xaa,%%dl\n\t"
- "orb %%al, %%bl\n\t" // Stick c1 into bl
- "orb %%cl, %%dl\n\t" // Stick c2 into dl
- "xorl %%eax, %%eax\n\t"
- "xorl %%ecx, %%ecx\n\t"
- /* At this point, bl contains c1, and dl contains c2 */
- /* and edi contains P, esi contains VRAM[] */
- /* al will be used for zz, cl will be used for zz2 */
- "movb %%bl,%%al\n\t"
- "movb %%dl,%%cl\n\t"
- "andb $3,%%al\n\t"
- "andb $3,%%cl\n\t"
- "movb (%%esi,%%eax),%%bh\n\t"
- "movb (%%esi,%%ecx),%%dh\n\t"
- "movb %%bh,6(%%edi)\n\t"
- "movb %%dh,7(%%edi)\n\t"
-
- "movb %%bl,%%al\n\t"
- "movb %%dl,%%cl\n\t"
- "shrb $2,%%al\n\t"
- "shrb $2,%%cl\n\t"
- "andb $3,%%al\n\t"
- "andb $3,%%cl\n\t"
- "movb (%%esi,%%eax),%%bh\n\t"
- "movb (%%esi,%%ecx),%%dh\n\t"
- "movb %%bh,4(%%edi)\n\t"
- "movb %%dh,5(%%edi)\n\t"
-
- "movb %%bl,%%al\n\t"
- "movb %%dl,%%cl\n\t"
- "shrb $4,%%al\n\t"
- "shrb $4,%%cl\n\t"
- "andb $3,%%al\n\t"
- "andb $3,%%cl\n\t"
- "movb (%%esi,%%eax),%%bh\n\t"
- "movb (%%esi,%%ecx),%%dh\n\t"
- "movb %%bh,2(%%edi)\n\t"
- "movb %%dh,3(%%edi)\n\t"
-
-// "movb %%bl,%%al\n\t"
-// "movb %%dl,%%cl\n\t"
- "xorb %%bh,%%bh\n\t"
- "xorb %%dh,%%dh\n\t"
- "shrb $6,%%bl\n\t"
- "shrb $6,%%dl\n\t"
- "movb (%%esi,%%ebx),%%al\n\t"
- "movb (%%esi,%%edx),%%cl\n\t"
- "movb %%al,0(%%edi)\n\t"
- "movb %%cl,1(%%edi)\n\t"
- : "=S" (dummy), "=a" (dummy1), "=b" (dummy2)
- : "D" (P), "S" (C), "a" (cc), "b" (PALRAM)
- : "%ecx", "%edx"
- );
-
-}
-#else
{
uint8 *S=PALRAM+cc;
- register uint8 c1,c2;
+ uint8 c1,c2;
c1=((C[0]>>1)&0x55)|(C[8]&0xAA);
c2=(C[0]&0x55)|((C[8]<<1)&0xAA);
P[0]=S[c1>>6];
P[1]=S[c2>>6];
}
-#endif