User`s guide

Expansion cards
4/2 FT1200 OWNER’S HANDBOOK
CautionCaution
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.
ISA Interrupt request level (IRQ)
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:
IRQ Default assignment Available?
IRQ0 System timer No
IRQ1 Keyboard controller No
IRQ2 System No
IRQ3 Serial port 2 Optionally
IRQ4 Serial port 1 Optionally
IRQ5 Audio (if fitted) Yes
IRQ6 Diskette controller No
IRQ7 Parallel port Optionally
IRQ8 Real time clock No
IRQ9 Yes
IRQ10 Yes
IRQ11 Yes
IRQ12 Mouse No
IRQ13 Coprocessor No
IRQ14 Primary ATA/IDE interface Optionally
IRQ15 Secondary ATA/IDE interface Optionally
IRQ3 is available if you disable serial port 2 with the BIOS Setup utility.
IRQ4 is available if you disable serial port 1.