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BT-757D, BT-757S

BUSLOGIC, INC.

BT-757D, BT-757S

Data bus:

32-bit, EISA

Size:

Full-length, full-height card

Hard drive supported:

Up to seven SCSI devices

Floppy drives supported:

Two 360KB, 720KB, 1.2MB, 1.44MB, or 2.88MB drives

CONNECTIONS

Function

Location

4-pin connector - drive active LED

J1

34-pin control cable connector - floppy drive

J2

50-pin SCSI connector - internal

J3

68-pin SCSI connector - internal

J4

68-pin SCSI connector - external

J5

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Termination power to 50-pin connector enabled

W1

closed

 

Termination power to 50-pin connector disabled

W1

open

Termination power to internal 68-pin conn. enabled

W2

closed

 

Termination power to internal 68-pin conn. disabled

W2

open

Termination power to external 68-pin conn. enabled

W3

closed

 

Termination power to external 68-pin conn. disabled

W3

open

Floppy drive enabled

W8

closed

 

Floppy drive disabled

W8

open

STATUS LED

LED

Status

Function

 

on briefly after start-up

Self-test successful

LED1

blinking

SCSI active

 

3 blinks, pause, 3 blinks sequence

Searching for SCSI device

MISCELLANEOUS TECHNICAL NOTES

BT-757D is a differential SCSI controller. Terminators RP2, 4, 6, 8, 10, and 12 contain 150ohm resistors. Terminators RP3, 5, 7, 9, 11, and 13 contain 330ohm resistors.

BT-757S is shipped with three resistor packs on-board, at the same locations as RP6, 7, and 13. Each pack contains 110ohm resistors.