HwMuseum | Index

NORTHGATE COMPUTER SYSTEMS, INC.

MB108

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

34-pin control cable connector - (reserved for future use)

J1

34-pin control cable connector - floppy drive

J2

4-pin connector - Drive active LED

J3

40-pin IDE(AT) Interface connector

J6

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

Hard drive Interrupt Request IRQ14 enabled

W21

closed

 

Hard drive Interrupt Request IRQ14 disabled

W21

open

HARD DRIVE PORT ADDRESS

Function

SW1/jumper 1

SW1/jumper 2

»

Hard drive port address is 1F0-1F7h

closed

open

 

Hard drive port address is 170-177h

open

closed

FLOPPY DRIVE PORT ADDRESS

Function

SW1/jumper 1

SW1/jumper 2

»

Floppy drive port address is 3F0-3F7h

closed

open

 

Floppy drive port address is 370-377h

open

closed

MISCELLANEOUS TECHNICAL NOTES

Jumpers J4 (Drive-type 300Kb/sec) is factory configured to pins 2 & 3 closed - do not alter

J5 (Pump/Precomp) is factory configured to pins 1 & 2 closed - do not alter.