BT-757C, BT-757CD Hard Disk/Floppy Controller Settings and Configuration

Data bus:

32-bit EISA

Size:

Three-quarter length, full-height card

Hard drive supported:

Up to fifteen SCSI devices

Floppy drives supported:

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

CONNECTIONS

Function

Location

4-pin connector-drive active LED

J1

34-pin connector-floppy drive interface

J2

50-pin connector-SCSI interface (internal)

J3

68-pin connector-SCSI interface (internal)

J4

68-pin connector-SCSI interface (external)

J5

USER CONFIGURABLE SETTINGS

Function

Jumper

Setting

»

Floppy drive interface enabled

W1

closed

Floppy drive interface disabled

W1

open

Note: The location of W1 is different in the C and CD models. For the C model, W1 is located between the floppy drive interface and the drive active LED connector.

TERMINATION POWER CONFIGURATION

Setting

Terminators Installed

Data bits 0-7 terminated

RP1, RP2, RP3, RP4, RP6, RP7, RP8, RP9

Data bits 8-15 terminated

RP12, RP13, RP14, RP15

All signals terminated

All installed

Note: These settings apply only to the BT-757CD.

MISCELLANEOUS TECHNICAL NOTES

The BT-757C and BT-757CD differ in that the ‘C’ model incorporates a single-ended interface and software controlled active termination, while the ‘CD’ model utilizes a differential interface and standard (i.e. differential) termination.