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C02/work/flags.c02
2018-08-11 00:18:23 -04:00

47 lines
1.2 KiB
Plaintext

/* Test C02 evaluations */
#pragma origin 1000
char aa, yy, xx;
char var;
doflgs(:+C :+D :+I);
doflgs(:-C :-D :-I :-V);
//doflgs(:+V);
doargs(aa, yy, xx :+C :-V);
if (?:+C) putln("Carry Set");
if (?:-C) putln("Carry Clear");
if (!?:+C) putln("Carry Not Set");
if (!?:-C) putln("Carry Not Clear");
if (?:+N) putln("Negative Set");
if (?:-N) putln("Negative Clear");
if (!?:+N) putln("Negative Not Set");
if (!?:-N) putln("Negative Not Clear");
if (?:+V) putln("Overflow Set");
if (?:-V) putln("Overflow Clear");
if (!?:+V) putln("Overflow Not Set");
if (!?:-V) putln("Overflow Not Clear");
if (?:+Z) putln("Zero Set");
if (?:-Z) putln("Zero Clear");
if (!?:+Z) putln("Zero Not Set");
if (!?:-Z) putln("Zero Not Clear");
if (?:+C:+N:+V:+Z) putln("Carry, Negative, Overflow, and Zero Set");
if (!?:+C:+N:+V:+Z) putln("Carry, Negative, Overflow, or Zero Not Set");
if (?:-C:-N:-V:-Z) putln("Carry, Negative, Overflow, and Zero Clear");
if (!?:-C:-N:-V:-Z) putln("Carry, Negative, Overflow, or Zero Not Clear");
if (VAR:+N) putln("VAR is negative");
if (VAR:+Z) putln("VAR is zero");
if (VAR:-N:-Z) putln("VAR is positive");
char sign() {
if (?:+N) return -1;
if (?:+Z) return 0;
return 1;
}
goto exit;