NEC VERSA LX Service And Reference Manual page 125

Interrupt Controllers
Using interrupts, hardware can request software services. If non-Plug and Play
software is being used, the interrupt may need to be moved for software
application or driver compatibility. Some interrupts cannot be moved. Fifteen
interrupts can be used with a cascade connection of 8259INTC x 2. The table
shows default interrupt level assignments 0 through 15, in order of decreasing
priority.
Controller
Master/Slave
Master
Master
Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Master
Master
Master
Master
Master
9-14 Specifications
System Interrupt Controllers
Priority Name
0 IRQ00
1 IRQ01
2 IRQ02
3 IRQ08
4 IRQ09
5 IRQ10
6 IRQ11
7 IRQ12
8 IRQ13
9 IRQ14
10 IRQ15
11 IRQ03
12 IRQ04
13 IRQ05
14 IRQ06
15 IRQ07
Device
System Timer 1
Keyboard
Programmable Controller
Real-time Clock
USB Port
PC Card Bus Controller/Video (AGP)
VersaBay in Versa Dock
PS/2 Mouse/NEC VersaGlide
Math Coprocessor (built into CPU)
Hard Disk Controller 1
VersaBay III
Infrared Port, when enabled
Serial Port
Sound/PC CardBus Controller (AGP)
Diskette Drive Controller
Parallel Port