APPENDIX D
Page 29
Blue Chip Technology Ltd.
01271014.doc
Page 29
APPENDIX D
AT Interrupt Map
Level
Function
Microprocessor NMI Parity or I/O Channel Check
Interrupt Controllers
CTLR 1
CTLR2
IRQ 0
Timer Output 0
IRQ 1
Keyboard (Output Buffer Full)
IRQ 2
Interrupt from CTLR 2
IRQ 8
Realtime Clock Interrupt
IRQ 9
Software Redirected to INT 0AH (IRQ 2)
IRQ 10
Reserved
IRQ 11
Reserved
IRQ 12
Reserved
IRQ 13
Co-processor
IRQ 14
Fixed Disk Controller
IRQ 15
Reserved
IRQ 3
Serial Port 2
IRQ 4
Serial Port 1
IRQ 5
Parallel Port 2
IRQ 6
Diskette Controller
IRQ 7
Parallel Port 1