E x p a n s i o n c a r d s
ISA Interrupt request level (IRQ)
LS/VS660 OWNER'S HANDBOOK
This system complies with the CE marking directive and its strict legal
requirements. Use only Apricot tested and approved parts. Failure to do
so may result in invalidating both the compliance and your warranty.
All expansion cards or upgrade components must carry CE marking.
The interrupt request level or IRQ is the line over which the
expansion card sends a signal to get the attention of, or interrupt,
the processor. Many of these are reserved for components on the
computer's motherboard. Some of these interrupts are fixed, others
can be re-assigned, or freed by disabling the component with BIOS
Setup, as shown in the following table:
Primary ATA/IDE interface
Secondary ATA/IDE interface
IRQ3 is available if you disable serial port 2 with the BIOS Setup utility.
IRQ4 is available if you disable serial port 1.
Serial port 2
Serial port 1
Audio (if fitted)
Real time clock