HwMuseum | Index

ADVANCED LOGIC RESEARCH, INC.

RLL FLOPPY/HARD DISK CONTROLLER

Card Type

Hard drive controller

Hard Drives supported

Two ST-506/412(RLL) drives

Floppy drives supported

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

Data Bus

16-bit ISA

Card Size

Three-quarter length, full-height

   

CONNECTIONS

Function

Label

Function

Label

34-pin cable connector - floppy drive

J1

20-pin data cable connector - drive 1

J4

34-pin control cable connector - hard drive

J2

4-pin connector - drive active LED

J5

20-pin data cable connector - drive 0

J3

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

W1

Open

»

Primary port address is 1F0h, 3F2h

W2

Open

 

Unidentified

W2

Closed

»

Secondary port address is 170h, 372h

W3

Open

 

Unidentified

W3

Closed

»

Initial data Rate control 500-KHZ enabled

W4

Open

 

Unidentified

W4

Closed

»

Hardware select mode enabled

W5

Closed

 

Hardware select mode disabled

W5

Open

»

Factory configured - do not alter

W6

Pins 1 & 2 open, 3 & 4, 5 & 6 closed

»

Floppy precompensation control - unidentified

W7

Open

 

Unidentified

W7

Closed

»

16K PROM enabled

W8

Closed

 

Unidentified

W8

Open

»

PROM address is C8000h

W9

Open

 

Unidentified

W9

Closed

»

PROM enabled

W10

Closed

 

PROM disabled

W10

Open