User manual

Interrupt Assignments

The interrupt assignments correspond to the standard AT assignments plus

POS- specific characteristics.

Interrupt no. Cause of interrupt

IRQ0 Timer output 0

IRQ1 Keyboard

IRQ2 Cascade

IRQ3 COM2*

IRQ4 COM1*

IRQ5 LAN / available

IRQ6 Floppy disk

IRQ7 LPT/available

IRQ8 Realtime clock

IRQ9 Power failure / available

IRQ10 available

IRQ11 available

IRQ12 PS/2Mouse/available

IRQ13 (Coprocessor)

IRQ14 HD(Primary

IRQ15 HD(Secondary)/available

“Available” means the availability of PCI and/or PnP components.

Î One Interrupt of IRQ9, IRQ10 and IRQ11 will be used by the BIOS

system manager.