User`s manual

PK2100
D-8 s Appendix D: I/O Map and Interrupt Vectors
Interrupt Priorities
The interrupt priorities are listed below in descending order.
1. Trap (Illegal Instruction)internal.
2. NMI (nonmaskable interrupt, power failure)external.
3. INT0 (nonmaskable, level 0)external.
4. INT1 (nonmaskable, level 1, expansion bus attention line)external.
5. INT2 (nonmaskable, level 2, T0 output interrupt if jumpered)
external.
6. PRT Timer Channel 0internal.
7. PRT Timer Channel 1internal.
8. DMA Channel 0internal.
9. DMA Channel 1internal.
10. Clocked Serial I/Ointernal.
11. Serial Port 0internal.
12. Serial Port 1internal.