Interrupt Controllers - NEC Versa Sxi Series Service And Reference Manual
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Also See for Versa Sxi Series:
- Release note (8 pages) ,
- Using (2 pages) ,
- Manual (182 pages)
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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
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
SystemTimer 1
Keyboard
Programmable Controller
Real-time Clock
USB Port
Video/Sound
Available
PS/2 Mouse/NEC VersaGlide
Math Coprocessor (built into CPU)
Primary IDE
Secondary IDE
Infrared Port, when enabled
Serial Port
PC CardBus Controller/Mini-PCI
Diskette Drive Controller
Parallel Port
Specifications 9-9
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Troubleshooting
