====== INTERRUPT ======

===== REGISTER STACKING =====

^ Stack ^ 6809 FIRQ (5+3) ^ 6809 IRQ (5+12) ^ 6309 IRQ (5+14) ^
| +14 | | | CC |
| +13 | | | A |
| +12 | | CC | B |
| +11 | | A | E |
| +10 | | B | F |
| +09 | | DP | DP |
| +08 | | XH | XH |
| +07 | | XL | XL |
| +06 | | YH | YH | 
| +05 | | YL | YL | 
| +04 | | USH | USH |
| +03 | CC | USL | USL |
| +02 | PCH | PCH | PCH |
| +01 | PCL | PCL | PCL |
| +00 | Stack | Stack | Stack |

===== RTS =====
Return to [[:Tandy Color Computer:]]