X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=x6502.c;h=57f8a009280baa2e3169ea446edae887416bb64c;hp=1d9174c06af6127da223900aeec1f2eb876197be;hb=e1591a12a775a600572ffccb2d6f8f4d6343b7dd;hpb=ea80a45b1dbd9f2c46567e18a2e18fcbb6e55c8d diff --git a/x6502.c b/x6502.c index 1d9174c..57f8a00 100644 --- a/x6502.c +++ b/x6502.c @@ -63,27 +63,16 @@ uint32 timestamp; static INLINE uint8 RdMem(unsigned int A) { - // notaz: try to avoid lookup of every address at least for ROM and RAM areas - // I've verified that if ARead[0xfff0] points to CartBR, it is always normal ROM read. -#if 0 - if ((A&0x8000)/* && ARead[0xfff0] == CartBR*/) { - return (_DB=Page[A>>11][A]); - } -#endif -#if 0 // enabling this causes 4fps slowdown. Why? - if ((A&0xe000) == 0) { // RAM area (always 0-0x1fff) - return (_DB=RAM[A&0x7FF]); - } -#endif - _DB=ARead[A](A); + int _DB1=ARead[A](A); + /*if (A >= 0x2000)*/ _DB=_DB1; #ifdef DEBUG_ASM_6502 //printf("a == %x, pc == %x\n", A, _PC); if (A >= 0x2000 && A != _PC && A != _PC - 1 && A != _PC + 1) { - dreads[dread_count_c++] = _DB; + dreads[dread_count_c++] = _DB1; if (dread_count_c > 4) { printf("dread_count out of range\n"); exit(1); } } #endif - return _DB; + return _DB1; } static INLINE void WrMem(unsigned int A, uint8 V) @@ -102,6 +91,7 @@ static INLINE void WrMem(unsigned int A, uint8 V) static INLINE uint8 RdRAM(unsigned int A) { + //return((_DB=RAM[A])); return((_DB=RAM[A])); } @@ -469,7 +459,6 @@ void X6502_Reset_c(void) { _PC=RdMem(0xFFFC); _PC|=RdMem(0xFFFD)<<8; - if(FCEUGameInfo.type==GIT_NSF) _PC=0x3830; _jammed=0; _PI=_P=I_FLAG; }