HwMuseum | Index

UNIDENTIFIED

AB-757

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

40-pin IDE(AT) Interface connector

JP1

2-pin connector - Drive active LED

JP2

34-pin control cable connector - floppy drive

JP9

15-pin game port - internal

JP10

10-pin serial port (COM2/3/4) - internal

JP11

10-pin serial port (COM1/3/4) - external

JP12

25-pin parallel port (LPT1/2/3) - external

JP13

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

Hard drive enabled

JP7/jumper 4

pins 2 & 3 closed

 

Hard drive disabled

JP7/jumper 4

pins 1 & 2 closed

»

Floppy drive enabled

JP7/jumper 5

pins 2 & 3 closed

 

Floppy drive disabled

JP7/jumper 5

pins 1 & 2 closed

»

IBM BIOS enabled

JP5

pins 2 & 3 closed

 

Other BIOS type enabled

JP5

pins 1 & 2 closed

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

Parallel Port is uni-directional

JP4

closed

 

Parallel Port is bi-directional

JP4

open

»

Floppy drive port address is 3F0-3F7h

JP7/jumper 3

pins 1 & 2 closed

 

Floppy drive port address is 370-377h

JP7/jumper 3

pins 2 & 3 closed

»

Hard drive port address is 1F0-1F7,3F6 & 3F7h

JP7/jumper 1

pins 1 & 2 closed

 

Hard drive port address is 170-177, 376 & 377h

JP7/jumper 1

pins 2 & 3 closed

»

Floppy drive booting sequence is A:/B:

JP7/jumper 2

pins 2 & 3 closed

 

Floppy drive booting sequence is B:/A:

JP7/jumper 2

pins 1 & 2 closed

»

AT-compatible mode enabled

JP7/jumper 6

pins 2 & 3 closed

 

XT-compatible mode enabled

JP7/jumper 6

pins 1 & 2 closed

SERIAL PORT CONFIGURATION

Port 1 (JP12)

JP6/jumper 1

JP6/jumper 2

»

COM1

Pins 2 & 3 closed

Pins 1 & 2 closed

 

COM3

Pins 1 & 2 closed

Pins 2 & 3 closed

 

COM4

Pins 2 & 3 closed

Pins 2 & 3 closed

 

Disabled

Pins 1 & 2 closed

Pins 1 & 2 closed

SERIAL PORT INTERRUPT SELECT

Port 1 (JP12)

JP8/jumper 1

JP8/jumper 2

JP8/jumper 3

»

IRQ4

Closed

Open

Open

 

IRQ3

Open

Closed

Open

 

IRQ5

Open

Open

Closed

SERIAL PORT CONFIGURATION

Port 2 (JP11)

JP6/jumper 3

JP6/jumper 4

»

COM2

Pins 2 & 3 closed

Pins 1 & 2 closed

 

COM3

Pins 1 & 2 closed

Pins 2 & 3 closed

 

COM4

Pins 2 & 3 closed

Pins 2 & 3 closed

 

Disabled

Pins 1 & 2 closed

Pins 1 & 2 closed

SERIAL PORT INTERRUPT SELECT

Port 2 (JP11)

JP8/jumper 4

JP8/jumper 5

JP8/jumper 6

»

IRQ3

Closed

Open

Open

 

IRQ4

Open

Closed

Open

 

IRQ5

Open

Open

Closed

PARALLEL PORT CONFIGURATION

LPT

JP6/jumper 5

JP6/jumper 6

»

LPT1

Pins 1 & 2 closed

Pins 2 & 3 closed

 

LPT2

Pins 2 & 3 closed

Pins 1 & 2 closed

 

LPT3

Pins 2 & 3 closed

Pins 2 & 3 closed

 

Disabled

Pins 1 & 2 closed

Pins 1 & 2 closed

PARALLEL PORT INTERRUPT SELECT

IRQ

JP8/jumper 7

JP8/jumper 8

»

IRQ7

Closed

Open

 

IRQ5

Open

Closed