Ethernet Network Adapter Installation Guide

ADDRESS/INTERRUPT TABLES
Page A-2
IRQ Interrupt Usage Machine Type
IRQ2 Reserved PC
IRQ2 Cascade from slave 8259A PIC AT, PS/2
IRQ3 Serial communications (COM2) PC, AT, PS/2
IRQ4 Serial communications (COM1) PC, AT, PS/2
IRQ5 Fixed disk PC
IRQ5 Parallel printer (LPT2) AT
IRQ6 Floppy disk PC, AT, PS/2
IRQ7 Parallel printer (LPT1) PC, AT, PS/2
IRQ9 Software diverted to IRQ2 AT, PS/2
IRQ10 Reserved AT, PS/2
IRQ11 Reserved AT, PS/2
IRQ12 Reserved AT
IRQ12 Mouse PS/2
IRQ14 Fixed-disk controller AT, PS/2
IRQ15 Reserved AT, PS/2
Table A-2. Commonly Used PC Interrupts