4-42
Chapter 4: Setup
Interrupt Levels
(486DX4, 586, 2xxx 686, 3xxx 686, and 35xx 686)
The following Interrupt Levels apply to the workstation.
Interrupt Level
Function
NMI
Parity or I/O Channel Check
IRQ00
Software Timer Output (unchangeable)
IRQ01
Keyboard/Wedge Output (unchangeable)
IRQ02
Cascade of Second PIC (unchangeable)
IRQ03
COM2, Port 2f8
IRQ04
COM1, Port 3f8
IRQ05
COM3, Port 3e8 (Add-on board port B and 8-
port RS-232 Board)
IRQ06
Flex Disk Controller
IRQ07
Parallel Port 1, Parallel Port 2
IRQ08
Real Time clock Interrupt
IRQ09
Software Redirected to 0AH, (COM 4, Port 2E8)
IRQ10
Ethernet
IRQ11
SCSI Adapter Board, (COM 5, Port 278), SVGA
LCD video
IRQ12
Mouse/Auxiliary Port
IRQ13
Math Coprocessor
IRQ14
Primary Hard Disk Controller
IRQ15
Secondary Hard Disk Controller
Summary of Contents for 7452
Page 1: ...NCR 7452 Workstation Release 3 1 Hardware User s Guide BD20 1373 C Issue J...
Page 6: ...iv...
Page 18: ......
Page 44: ...1 26 Chapter 1 Product Overview 14406a Integrated 2x20 Customer Display...
Page 58: ...2 2 Chapter 2 Workstation Hardware Installation AC Input Selection Switch 14598 115V...
Page 74: ...2 18 Chapter 2 Workstation Hardware Installation 14566 Wrap Stand 5952 DynaKey Configuration...
Page 77: ...Chapter 2 Workstation Hardware Installation 2 21 17320 Wrap Stand 5953 DynaKey Configuration...
Page 80: ......
Page 164: ......
Page 187: ...Chapter 4 Setup 4 23 Load Previous Values Save Changes...
Page 216: ...4 52 Chapter 4 Setup...
Page 226: ......
Page 232: ...6 6 Chapter 6 BIOS Updating Procedures 4 After a successful BIOS update reboot the workstation...
Page 256: ......
Page 261: ...BD20 1373 C February 2001 Printed on recycled paper...