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# BUSLOGIC, INC.
BT-757C, BT-757CD
Data bus: 32-bit EISA
Size: Three-quarter length, full-height card
Hard drive Up to fifteen SCSI devices
supported:
Floppy drives Two 360KB, 720KB, 1.2MB, or 1.44MB drives
supported:
IMG IMG 1
+------------------------------------------------------------+
| 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 | W1 | closed |
| | enabled | | |
|------+---------------------------+------------+------------|
| | Floppy drive interface | W1 | open |
| | disabled | | |
|------------------------------------------------------------|
| 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. |
+------------------------------------------------------------+