![NCR 7452 User Manual Download Page 202](http://html1.mh-extra.com/html/ncr/7452/7452_user-manual_3714522202.webp)
4-38
Chapter 4: Setup
I/O Addresses
(486DX4, 586, 2xxx 686, 3xxx 686 and 35xx 686)
The following I/O Address Map applies to the workstation.
Port (Hex)
System Use
00-0F
DMA Controller 1
20-21
Programmable Interrupt Controller (Master)
40-4B
Programmable Interval Timer
60-64
Keyboard Controller/NMI
70-7F
Real Time Clock and DMA Mask
80
Heartbeat LED Register
81-8F
DMA Page Register
A0-A1
Programmable Interrupt Controller 2
C0-DF
DMA Controller 2
F0
Reset Numeric Error
F8-FF
Processor
* 100-10F
CMOS (Riser Board) (Default)
* 120-12F
CMOS (Riser Board)
* 140-14F
CMOS (Riser Board)
*160-16F
CMOS (Riser Board)
170-177
Secondary IDE Hard Disk Controller
1F0-1F7
Primary IDE Hard Disk Controller
1A0-1A1
ISA LCD Board
200-207
Reserved
220-227
COM Port Serial/3 (586 board only)
240-
SMC Ethernet Board
240-27F
8-Port Serial Board (586 board only)
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...