EQUITY 386SX

I/O Port Addresses

ADDRESS

FUNCTION

 

 

 

WO-OlF

Dh4A Controller I

02043F

Interrupt Controller 1

04048F

Timer/Counter

08M8F

Keyboard controller and Port B

070-07F

CMOS RAM and Non-Maskable

 

Interrupt Mask

08OXQF

Dh#I Page Fbglster

OAO-OBF

Interrupt Controller 2

OCO-ODF

DMA Controller 2

OEO-OFF

Numeric Coprocessor

lMlF8

Hard Disk Controller

278-27F

Parallel Port 1

2F8-2FF

8erial Port 1

378-37F

Parallel Port 0

3BO-3BF

Parallel Port 2 (on some video

 

boards)

3FO-3F7

floppy Disk Controller

3F8-3FF

Serial Port 0

 

 

 

 

 

 

Jumper Settings

Possible Eqwy 386xX SlMM con~alirnls

DMA Channels

CHANNEL FUNCTlON

0

Spare

1

Spare

2floppy disk transfers

3Spare (Hard disk drive)

4Cascade of data from channel O-3

5spare

8spare

7We

EQ386SX-3