UNIDENTIFIED

B237

Data bus:

16-bit, ISA

Size:

Half-length, full-height card

Hard drive supported:

Two IDE (AT) Interface drives

Floppy drives supported:

Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS

Function

Location

25-pin parallel port (LPT1/2) - external

CN1

15-pin game port - external

CN2

10-pin serial port (COM1/3) - internal

CN3

10-pin serial port (COM2/4) - internal

CN4

34-pin control cable connector - floppy drive

CN5

40-pin IDE (AT) Interface connector

CN6

4-pin connector - drive active LED

CN7

PARALLEL PORT ADDRESS

Setting

JP3

JP4

3BCh

pins 2 & 3 closed

pins 1 & 2 closed

378h

pins 1 & 3 closed

pins 1 & 2 closed

278h

pins 1 & 2 closed

pins 2 & 3 closed

Disable

pins 2 & 3 closed

pins 2 & 3 closed

SERIAL PORTS COM SELECT

Serial 1

Serial 2

JP5

JP6

JP7

COM1

COM2

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

COM2

COM1

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

FLOPPY DRIVE SELECT

Setting

JP8

JP9

Enabled

pins 1 & 2 closed

pins 1 & 2 closed

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

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