Compaq Deskpro 4000S and 4000N Personal Computers
7-3
Table 7-4
System I/O
I/O Address (Hex)
System Function (Shipping Configuration)
000 - 00F
DMA Controller # 1
010 - 01F
Unused
020 - 03F
Interrupt Controller # 1
040 - 043
Counter/Timer
044 - 05F
Unused
060
Keyboard Controller
061
Port B
062 - 063
Unused
064
Keyboard Controller
065 - 06F
Unused
070 - 071
NMI Enable/Real-Time Clock
072 - 07F
Unused
080 - 08F
DMA Page Registers
090 - 091
Unused
092
Port A
093 - 09F
Unused
0A0 - 0BF
Interrupt Controller # 2
0C0 - 0DF
DMA Controller # 2
0E0 - 0EB
Unused
0EC - 0ED
483 Configuration Index/Data
0EE - 0EF
483 Fast A20/Fast Reset
0F0 - 0F1
Co-Processor Busy Clear/Reset
0F2 - 0F3
Unused
0F4 - 0F5
483 CPU Speed Slow/Fast
0F6 - 0F8
Unused
0F9
483/PGL Configuration Lock
0FA
Unused
0FB
483/PGL Configuration Unlock
0FC - 0FF
Unused
100 - 12F
Unused
130 - 131
Unused
132 - 16F
Unused
170 - 177
Reserved
178 - 1EF
Unused
1F0 - 1F7
Fixed Disk Controller
1F8 - 1FF
Unused
200
Unused
201
Unused
Continued
Summary of Contents for Deskpro 4000N - Desktop PC
Page 1: ...MAINTENANCE SERVICE GUIDE Compaq Deskpro 4000N and 4000S Network Personal Computers...
Page 2: ......
Page 4: ...CPS...
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Page 46: ...3 2 Illustrated Parts Catalog 3 1 System Unit Figure 3 2 System Unit Spares...
Page 48: ...3 4 Illustrated Parts Catalog 3 2 Parts Kits Figure 3 3 Part Kits Components...
Page 50: ...3 6 Illustrated Parts Catalog 3 3 Miscellaneous Parts Figure 3 4 Miscellaneous Parts...
Page 52: ...3 8 Illustrated Parts Catalog 3 4 Mass Storage Devices Figure 3 5 Mass Storage Devices...
Page 54: ...3 10 Illustrated Parts Catalog 3 5 Cables Figure 3 6 Cables...
Page 58: ...3 14 Illustrated Parts Catalog 3 7 Keyboards Figure 3 8 Enhanced Keyboard...
Page 60: ...3 16 Illustrated Parts Catalog 3 8 Monitors Figure 3 9 Compaq Monitors...
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Page 124: ...6 10 Connector Jumper and Switch Information...
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