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EXPERT TOP HFDC

UNIDENTIFIED

EXPERT TOP HFDC

Data bus:

16-bit ISA

Size:

Three/quarter-length, full-height card

Hard drive supported:

Two MFM ST506/412 drives

Floppy drives supported:

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

CONNECTIONS

Function

Location

34-pin control cable connector - hard drive

J1

20-pin data cable connector - drive 1

J2

20-pin data cable connector - drive 0

J3

34-pin connector - floppy drive interface

J4

2-pin connector - drive active LED

J6

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive interface operates at 360 RPM

W1

pins 1 & 2 closed

 

Floppy drive interface operates at 300 RPM

W1

pins 2 & 3 closed

Floppy drive is primary in system (3F2 - 3F7h)

W4

pins 2 & 3 closed

 

Floppy drive is secondary in system (372 - 377h)

W4

pins 1 & 2 closed

ST506/412(MFM) interface is primary in system (1F0 - 1F7h)

W6

pins 2 & 3 closed

 

ST506/412(MFM) interface is secondary in system (170 - 177h)

W6

pins 1 & 2 closed