ASEM CPU 1021/A - Interrupt Request (IRQ) Map

CPU 1021/A User’s Guide
40 Asem S.p.A.
Map of interrupts
Name
Controller
Number
Description
IRQ0
1
008
Timer 0, not available on AT bus
IRQ1
1
009
Tastiera, not available on AT bus
IRQ2
1
00A
Interrupt controller 2, not available on
AT bus
IRQ3
1
00B
Serial Port 2
IRQ4
1
00C
Serial Port 1
IRQ5
1
00D
Free
IRQ6
1
00E
Floppy disk controller
IRQ7
1
00F
Parallel Port 1
IRQ8
2
070
Real time clock, not available on AT
bus
IRQ9
2
071
Reserved
IRQ10
2
072
Free (possible COM3)
IRQ11
2
073
Free (possible COM4)
IRQ12
2
074
Mouse PS/2
IRQ13
2
075
Math coprocessor
IRQ14
2
076
Primary IDE channel
IRQ15
2
077
Secondary IDE channel