dos33fsprogs/gr-sim/6502_emulate.h

#define RAMSIZE	128*1024
extern unsigned char ram[RAMSIZE];
extern unsigned char a,y,x;
extern unsigned short sp;
extern unsigned int n,z,c,v;

unsigned short y_indirect(unsigned char base, unsigned char y);
int init_6502(void);
void adc(int value);
void sbc(int value);
void cmp(int value);
void pha(void);
void pla(void);
void lsr(void);