ETOP PISA-E11 - Page 91

PISA-E11 User`s Manual 83
B. Interrupt Request Lines (IRQ)
There are a total of 15 IRQ lines available on the Industrial CPU Card.
Peripheral devices use interrupt request lines to notify CPU for the
service required. The following table shows the IRQ used by the
devices on the Industrial CPU Card.
Level
Function
IRQ0
System Timer Output
IRQ1
Keyboard
IRQ2
Interrupt Cascade
IRQ3
Serial Port #2
IRQ4
Serial Port #1
IRQ5
Reserved
IRQ6
Floppy Disk Controller
IRQ7
Parallel Port #1
IRQ8
Real Time Clock
IRQ9
Software Redirected to Int0Ah
IRQ10
Reserved
IRQ11
Reserved
IRQ12
PS/2 Mouse
IRQ13
80287
IRQ14
Primary IDE
IRQ15
Secondary IDE