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HDD/FDD CONTROLLER

UNIDENTIFIED

HDD/FDD CONTROLLER

Data Bus

16-bit ISA

Card Size

Full height, half length

Hard Drives Supported

Two ST506/412-MFM devices

Floppy Drives Supported

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

CONNECTIONS

Function

Label

Function

Label

20-pin cable connector - primary drive

J1

34-pin cable connector - floppy drive

J4

20-pin data cable connector - secondary drive

J2

2-pin connector - drive active LED

LED

34-pin cable connector - hard drive control

J3

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Hard drive controller address set to 1F0h

J5

Pins 1 & 3 closed

 

Hard drive controller address set to 170h

J5

Pins 3 & 5 closed

Floppy controller address set to 3F2h

J5

Pins 2 & 4 closed

 

Floppy controller address set to 372h

J5

Pins 4 & 6 closed

Floppy drive speed set to 360RPM

J6

Open

 

Floppy drive speed set to 300RPM

J6

Closed