Table 4-1 Extensa Series I/O Address Map
Address Range
Device
000-00F
DMA Controller 1
020-021
Interrupt Controller-1
022-023
M1429 Registers
040-043
Timer 1
060-06E
Keyboard Controller 8742 Chip Select
070-071
Real Time Clock and NMI Mask
080-08F
DMA Page Register
0A0-0A1
Interrupt Controller 2
0C0-0DF
DMA Controller-2
1F0-1F7
Hard Disk Select
178,,17A
6377 Registers
1F0-1F7
Hard Disk Select
3F6,,3F7,
278-27F
Parallel Port 3
35F, 36F
Special I/O Ports
378,,37A
Parallel Port 2
3BC-3BE
Parallel Port 1
3C0-3C5
3C6-3C9
Video DAC
3C0-3CF
Enhanced Graphics Display
3D0-3DF
Color Graphics Adapter
3E0-3E1
PCMCIA Controller
3F0-3F7
Floppy Disk Controller
3F8-3FF
Serial Port 1
Theory
4-3
Summary of Contents for Extensa 450 Series
Page 1: ...Maintenance Manual Extensatm 450 Series Notebook Computers 9805725 0001 November 1995 ...
Page 12: ...Figure 1 2 Extensa 450 Series Features 1 4 General Description ...
Page 42: ...Figure 4 1 Notebook Functional Block Diagram 4 2 Theory ...
Page 71: ...Figure 6 5 Touchpad Removal Replacement 6 12 Field Service ...
Page 93: ...Connector Pinouts B 11 ...
Page 100: ...Printed in U S A ...