Compaq 800 Series Maintenance And Service Manual page 128

Specifications
Hardware IRQ
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
IRQ9
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
IRQ15
✎
PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11,
or IRQ15. Either the infrared or the serial port may assert IRQ3 or
IRQ4.
*Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9,
IRQ10, or none.
6–10
Table 6-8
System Interrupts
System Function
System timer
Keyboard controller
Cascaded
COM2
COM1
Audio (default)*
Diskette drive
Parallel port
Real time clock (RTC)
Infrared
System use
System use
Internal point stick or external mouse
Coprocessor (not available to any peripheral)
IDE interface (hard drive and optical drive)
System use
Maintenance and Service Guide