Specifications

BB
Page B-1
Appendix B: Interrupts and
DMA Channels
Interrupts
The assignment of interrupts for the EPC-5A is shown in the following table:
NMI DRAM parity error, EXM expansion interface I/O channel
check
IRQ0 timer
IRQ1 keyboard
IRQ2 IRQ8 - IRQ15 cascade through IRQ2
IRQ3 COM B serial port
IRQ4 COM A serial port
IRQ5 unassigned
IRQ6 usually needed for floppy disk controller
IRQ7 LPT1 parallel port
IRQ8 clock
IRQ9 unassigned
IRQ10 VME interrupt/event
IRQ11 unassigned
IRQ12 unassigned
IRQ13 coprocessor
IRQ14 used by optional IDE disk controller
IRQ15 unassigned
Table B-1. EPC-5A Interrupts.