Epson Apex 386/33 Canadian Product User Manual - Page 160

I/O Address Map, on the AT I/O

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I/O Address Map The I/O address map of your mainboard is given below. Note that the I/O addresses from hex 000 to hex OFF are reserved for the mainboard, and the addresses from hex 100 to hex 3FF are available on the AT I/O bus. Address Range 000-01 F 020-03F 040-05F 060-06F 070-07F 080-09F 0A0-0BF 0C0-0DF 0F0 0F1 0F&0FF 1 F0-1F8 200-207 278-27F 2F8-2FF 300-31 F 360-36F 378-37F 380-38F 3A0-3AF 3B0-3BF 3C0-3CF 3D0-3DF 3F0-3F7 3F8-3FF Device DMA Controller 1, 8237 Master Interrupt Controller, 8259 Timer, 8254 Keyboard Controller, 8042 Real-time clock, NMI mask DMA Page Register,74LS612 Interrupt Controller2, 8259 DMA Controller 2, 8237 Clear Math Coprocessor Busy Reset Math Coprocessor Math Coprocessor 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 Enhanced Graphics Display Adapter Color Graphics Monitor Adapter Diskette Controller Serial Port 1 Table 6-11: I/0 Address Map Chapter 6: Appendix 41

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I/O Address
Map
The I/O address map of your mainboard is given below. Note that the
I/O addresses from hex 000 to hex OFF are reserved for the mainboard,
and the addresses from hex 100 to hex 3FF are available
on the AT I/O
bus.
Address Range
000-01 F
020-03F
040-05F
060-06F
070-07F
080-09F
0A0-0BF
0C0-0DF
0F0
0F1
0F&0FF
1 F0-1F8
200-207
278-27F
2F8-2FF
300-31 F
360-36F
378-37F
380-38F
3A0-3AF
3B0-3BF
3C0-3CF
3D0-3DF
3F0-3F7
3F8-3FF
Device
DMA Controller 1, 8237
Master Interrupt Controller, 8259
Timer, 8254
Keyboard Controller, 8042
Real-time clock, NMI mask
DMA Page Register,74LS612
Interrupt Controller2, 8259
DMA Controller 2, 8237
Clear Math Coprocessor Busy
Reset Math Coprocessor
Math Coprocessor
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
Enhanced Graphics Display Adapter
Color Graphics Monitor Adapter
Diskette Controller
Serial Port 1
Table 6-11: I/0 Address Map
Chapter 6: Appendix
41