9-14 Specifications
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.
System Interrupt Controllers
Controller
Master/Slave
Priority
Name
Device
Master
0
IRQ00
System Timer 1
Master
1
IRQ01
Keyboard
Master
2
IRQ02
Programmable Controller
Slave
3
IRQ08
Real-time Clock
Slave
4
IRQ09
USB Port
Slave
5
IRQ10
PC Card Bus Controller/Video (AGP)
Slave
6
IRQ11
VersaBay in Versa Dock
Slave
7
IRQ12
PS/2 Mouse/NEC VersaGlide
Slave
8
IRQ13
Math Coprocessor (built into CPU)
Slave
9
IRQ14
Hard Disk Controller 1
Slave
10
IRQ15
VersaBay III
Master
11
IRQ03
Infrared Port, when enabled
Master
12
IRQ04
Serial Port
Master
13
IRQ05
Sound/PC CardBus Controller (AGP)
Master
14
IRQ06
Diskette Drive Controller
Master
15
IRQ07
Parallel Port
Summary of Contents for Versa LX
Page 1: ...NEC Versa LX Notebook Computer VERSA LX S E R V I C E A N D R E F E R E N C E M A N U A L...
Page 57: ...3 Disassembly and Reassembly Required Tools and Equipment Disassembly Reassembly...
Page 91: ...5 2 Illustrated Parts Breakdown Illustrated Parts Breakdown Non AGP Models...
Page 94: ...Illustrated Parts Breakdown 5 5 Illustrated Parts Breakdown AGP Models...
Page 102: ...7 Troubleshooting Quick Troubleshooting Helpful Questions...
