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I/o port mapping – Juniper Systems Allegro DOS Manual User Manual

Page 134

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134 Allegro DOS Owner’s Manual

I/O Port Mapping

Address Function

080

Diagnostics Port

2F0 - 2F3

System Control Registers

2F8 - 2FF

COM2:

300 - 31F

Internal - Do Not Use

3D0 - 3DF

CGA Display

3E0 - 3E7

PC Card Controller

3F8 - 3FF

COM1: