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# BUSLOGIC, INC.
BT-757D, BT-757S
Data bus: 32-bit, EISA
Size: Full-length, full-height card
Hard drive Up to seven SCSI devices
supported:
Floppy drives Two 360KB, 720KB, 1.2MB, 1.44MB, or 2.88MB
supported: drives
IMG IMG 1
+------------------------------------------------------------+
| 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 | W1 | closed |
| | connector enabled | | |
|---+-----------------------------------+----------+---------|
| | Termination power to 50-pin | W1 | open |
| | connector disabled | | |
|---+-----------------------------------+----------+---------|
| » | Termination power to internal | W2 | closed |
| | 68-pin conn. enabled | | |
|---+-----------------------------------+----------+---------|
| | Termination power to internal | W2 | open |
| | 68-pin conn. disabled | | |
|---+-----------------------------------+----------+---------|
| » | Termination power to external | W3 | closed |
| | 68-pin conn. enabled | | |
|---+-----------------------------------+----------+---------|
| | Termination power to external | W3 | open |
| | 68-pin conn. disabled | | |
|---+-----------------------------------+----------+---------|
| » | 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 | Searching for SCSI |
| | sequence | 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. |
+------------------------------------------------------------+