mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-08 00:29:35 +00:00
c05084c289
probably broke something, but this also was a pain as was often accidentally using the vars, especially X and Y
51 lines
798 B
C
51 lines
798 B
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
#include <math.h>
|
|
|
|
#include "gr-sim.h"
|
|
#include "tfv_utils.h"
|
|
#include "tfv_zp.h"
|
|
#include "6502_emulate.h"
|
|
|
|
int main(int argc, char **argv) {
|
|
|
|
int yy;
|
|
|
|
grsim_init();
|
|
gr();
|
|
|
|
yy=0;
|
|
printf("****yy=%d\n",yy);
|
|
|
|
Y=yy; // ldy #0
|
|
X=3; // ldx #3
|
|
L1:
|
|
ram[0x3c]=X; // stx $3c
|
|
A=X; // txa
|
|
asl(); // asl
|
|
bit_mem(0x3c); // bit $3c
|
|
if (Z==1) goto L3; // beq L3
|
|
ora_mem(0x3c); // ora $3c
|
|
eor(0xff); // eor #$ff
|
|
and(0x7e); // and #$7e
|
|
L2:
|
|
if (C==1) goto L3; // bcs L3
|
|
lsr(); // lsr
|
|
if (Z==0) goto L2; // bne L2
|
|
|
|
A=Y; // tya
|
|
printf("%x=%x\n",X,A); // sta nibtbl, x
|
|
Y++; // iny
|
|
L3:
|
|
X++; // inx
|
|
if (!(X&0x80)) goto L1; // bpl L1
|
|
|
|
|
|
|
|
return 0;
|
|
}
|
|
|