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PCI/ISA System Board
I/O Address Map
I/O Address
000-01F
020-03F
040-05F
060-06F
070-07F
080-09F
0A0-08F
0C0-0DF
0E8
0F0
0F1
0F8-OFF
1F0-1F8
200-207
278-27F
2F8-2FF
300-31F
360-36F
378-37F
380-38F
3A0-3AF
3B0-3BF
3C0-3CF
3D0-3DF
3F0-3F7
3F8-3FF
Note:
The I/O address hex 000 to 0FF are reserved for the
system board I/0. Hex 100 to 3FF are available on the
I/O channels.
82
Function
DMA Controller 1, 8237A-5
Interrupt Controller 1, 8259A, Master
Timer, 8254-2
8742 (Keyboard Controller)
Real-time Clock, NMI
(Non-maskable Interrupt) Mask
DMA Page Memory , 74LS612
Interrupt Controller 2, 8259A
DMA Controller 2, 8237A-5
Shadow RAM and Cache Control Bit
Clear Numeric Processor
Extension Busy
Reset Numeric Processor Extension
Numeric Processor Extension
Fixed Disk
Game I/O
Parallel Printer Port 2
Serial Port 2
Prototype Card
Reserved
Parallel Printer Port 1
SDLC, Bisynchronous 2
Bisynchronous 1
Monochrome Display and Printer Adapter
Reserved
Color/Graphics Monitor Adapter
Diskette Controller
Serial Port 1
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