
B
B
B-1
Appendix B -
Interrupts and DMA
Channels
Interrupts
The assignment of interrupts for the EPC-9 is shown in the following table:
NMI
DRAM parity error, EXM expansion interface I/O channel check asserted
IRQ0
timer
IRQ1
keyboard controller
IRQ2
IRQ8 - IRQ15 cascade through IRQ2
IRQ3
COM B serial port if enabled
IRQ4
COM A serial port if enabled
IRQ5
Ethernet or unassigned
IRQ6
floppy disk controller if enabled
IRQ7
LPT1 parallel port
IRQ8
real-time clock
IRQ9
Universe Bridge (routed to INTD)
IRQ10
One of (11) interrupts or events: (7) VME interrupts, VME ACFAIL, VME
SYSFAIL, VME BERR, watchdog timer event
IRQ11
SCSI or unassigned
IRQ12
mouse
IRQ13
numeric coprocessor
IRQ14
Primary IDE
IRQ15
Secondary IDE
SMI
Power Management
INTA
PMC1
INTB
PMC0, Ethernet)
INTC
SCSI (Routed to IRQ11)
INTD
Universe Bridge (Routed to IRQ9) - One of (11) interrupts or events: (7)
VME interrupts, VME ACFAIL, VME SYSFAIL, VME SYSRESET, PCI
Bus Fail
Table B-1. Interrupts.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com