Fujitsu ErgoPro e Series User Manual

PC Specialist's Handbook ErgoPro e-, x- and s- Series
First Edition, Release 4 - June 1998 Page 87
Interrupt levels
Two programmable interrupt controllers supply interrupt control. The controllers are cascaded together as a
master-slave pair and provide 15 ISA-compatible interrupt levels. Excluding NMI, all interrupts can be masked.
Controllers are 8259A compatible.
The table below shows the interrupt level assignments.
Interrupt
Function
NMI
Parity error (System memory does not have parity checking)
Master (Controller 1)
IRQ0
Timer output 0 (internal)
IRQ1
Keyboard controller
IRQ2
Interrupt from slave
IRQ3
COM2 (x- and s-series)
IRQ4
COM1
IRQ5
On-board audio (x251/451/651 and s-series)
1
Aztech audio (xs-series)
IRQ6
Diskette drive controller
IRQ7 LPT1, On-board audio
2
Slave (Controller 2)
IRQ8
Real-time Clock
IRQ9
On-board audio
2
Aztech audio (xs-series)
IRQ10
On-board audio
2
Aztech audio (xs-series)
IRQ11
Rerouted PCI IRQ (Default for ICL/AMD Ethernet)
3
IRQ12
PS/2-type mouse device
IRQ13
Math co-processor error
IRQ14
Primary IDE interface
IRQ15
Secondary IDE interface
1
: When enabled
2
: Alternative selection
3
: When installed

Fujitsu ErgoPro e Series Specifications

General

Brand	Fujitsu
Model	ErgoPro e Series
Category	Desktop
Language	English