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Appendix A: Interrupts &

DMA Channels

Interrupts and DMA Channels

All of the following interrupts are used on the EPC-7 and cannot be disabled (except

COM1, COM2, and LIP1, which can be disabled in the Setup Screen.) The

assignment of interrupts is shown in the following table:

NMI DRAM parity error, EXM expansion interface I/O

channel check

IRQ0 timer

IRQ1 keyboard

IRQ3 COM2 serial port

IRQ4 COM1 serial port

IRQ5 unassigned

IRQ6 floppy disk controller

IRQ7 LPT1 parallel port

IRQ8 clock

IRQ9 unassigned

IRQ10 VXI interrupt/event

IRQ11 SCSI controller

IRQ12 unassigned

IRQ13 unassigned

IRQ14 IDE disk

IRQ15 unassigned

Table 18. Interrupt Assignments.

Page A1

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