mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-07-05 00:28:59 +00:00
51 lines
798 B
C
51 lines
798 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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#include "gr-sim.h"
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#include "tfv_utils.h"
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#include "tfv_zp.h"
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#include "6502_emulate.h"
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int main(int argc, char **argv) {
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int yy;
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grsim_init();
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gr();
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yy=0;
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printf("****yy=%d\n",yy);
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y=yy; // ldy #0
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x=3; // ldx #3
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L1:
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ram[0x3c]=x; // stx $3c
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a=x; // txa
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asl(); // asl
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bit_mem(0x3c); // bit $3c
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if (z==1) goto L3; // beq L3
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ora_mem(0x3c); // ora $3c
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eor(0xff); // eor #$ff
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and(0x7e); // and #$7e
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L2:
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if (c==1) goto L3; // bcs L3
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lsr(); // lsr
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if (z==0) goto L2; // bne L2
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a=y; // tya
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printf("%x=%x\n",x,a); // sta nibtbl, x
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y++; // iny
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L3:
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x++; // inx
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if (!(x&0x80)) goto L1; // bpl L1
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return 0;
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}
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