Table of Contents
VECTORS
| ADDRESSES | PURPOSE |
|---|---|
| FFFE - FFFF | RESET |
| FFFC - FFFD | Non-Maskable Interrupt (NMI) |
| FFFA - FFFB | SWI Software Interrupt (SWI) |
| FFF8 - FFF9 | Interrupt Request (IRQ) |
| FFF6 - FFF7 | Fast Interrupt Request (FIRQ) |
| FFF4 - FFF5 | Software Interrupt 2 (SWI2) |
| FFF2 - FFF3 | Software Interrupt 3 (SWI3) |
| FFF0 - FFF1 | 6309 ONLY - Trap |
CMOC EXAMPLE
void vectors() {
word vecreset = * (word *) 0xFFFE;
printf("VECRES = %4x\n", vecreset);
word vecnmi = * (word *) 0xFFFC;
printf("VECNMI = %4x\n", vecnmi);
word vecswi = * (word *) 0xFFFA;
printf("VECSWI = %4x\n", vecswi);
word vecirq = * (word *) 0xFFF8;
printf("VECIRQ = %4x\n", vecirq);
word vecfirq = * (word *) 0xFFF6;
printf("VECFIRQ = %4x\n", vecfirq);
word vecswi2 = * (word *) 0xFFF4;
printf("VECSWI2 = %4x\n", vecswi2);
word vecswi3 = * (word *) 0xFFF2;
printf("VECSWI3 = %4x\n", vecswi3);
word vectrap = * (word *) 0xFFF0;
printf("VECTRAP = %4x\n", vectrap);
}
RTS
Return to Tandy Color Computer