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# DATA TECHNOLOGY CORPORATION
DTC3274VL (900176-89XX)
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 32-bit VL-Bus |
|-------------------+----------------------------------------|
| Size: | Three/quarter-length, half-height card |
|-------------------+----------------------------------------|
| Hard drive | Up to seven SCSI devices |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB, 1.44MB drives |
| supported: | |
+------------------------------------------------------------+
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|------------------------------------------+-----------------|
| 34-pin cable connector - floppy drive | JP5 |
|------------------------------------------+-----------------|
| 50-pin SCSI connector - internal | JP7 |
|------------------------------------------+-----------------|
| 50-pin SCSI connector - external | JP8 |
|------------------------------------------+-----------------|
| 4-pin connector - drive active LED | JP10 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ID SELECTION |
|------------------------------------------------------------|
| SCSI ID | SW11 | SW12 | SW13 |
|-----------------+--------------+-------------+-------------|
| » | 7 | off | off | off |
|----+------------+--------------+-------------+-------------|
| | 0 | on | on | on |
|----+------------+--------------+-------------+-------------|
| | 1 | off | on | on |
|----+------------+--------------+-------------+-------------|
| | 2 | on | off | on |
|----+------------+--------------+-------------+-------------|
| | 3 | off | off | on |
|----+------------+--------------+-------------+-------------|
| | 4 | on | on | off |
|----+------------+--------------+-------------+-------------|
| | 5 | off | on | off |
|----+------------+--------------+-------------+-------------|
| | 6 | on | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|----------------------------------+---------------+---------|
| » | BIOS support 2 hard drives | JP1 | open |
|---+------------------------------+---------------+---------|
| | BIOS support 3 or more hard | JP1 | closed |
| | drives | | |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | JP2 | open |
| | alter | | |
|---+------------------------------+---------------+---------|
| » | BIOS enabled | JP3 | closed |
|---+------------------------------+---------------+---------|
| | BIOS disabled | JP3 | open |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | JP4 | open |
| | alter | | |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | JP6/pins 1 & | N/A |
| | alter | 2 | |
|---+------------------------------+---------------+---------|
| » | Active termination enabled | JP9 | open |
|---+------------------------------+---------------+---------|
| | Active termination disabled | JP9 | closed |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | JP11/pins 2 & | N/A |
| | alter | 3 | |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | JP12 | open |
| | alter | | |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | JP13 | open |
| | alter | | |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | JP14 | open |
| | alter | | |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | JP15 | open |
| | alter | | |
|---+------------------------------+---------------+---------|
| » | CPU clock <=33MHz | SW1 | off |
|---+------------------------------+---------------+---------|
| | CPU clock >33MHz | SW1 | on |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | SW8 | N/A |
| | alter | | |
|---+------------------------------+---------------+---------|
| » | Synchronous Negotiation | SW14 | on |
| | disabled | | |
|---+------------------------------+---------------+---------|
| | Synchronous Negotiation | SW14 | off |
| | enabled | | |
|---+------------------------------+---------------+---------|
| » | Fast synchronous transfer | SW15 | on |
| | disabled | | |
|---+------------------------------+---------------+---------|
| | Fast synchronous transfer | SW15 | off |
| | enabled | | |
|---+------------------------------+---------------+---------|
| » | Floppy disk controller | SW16 | off |
| | enabled | | |
|---+------------------------------+---------------+---------|
| | Floppy disk controller | SW16 | on |
| | disabled | | |
|---+------------------------------+---------------+---------|
| » | SCSI parity enabled | SW17 | off |
|---+------------------------------+---------------+---------|
| | SCSI parity disabled | SW17 | on |
|---+------------------------------+---------------+---------|
| » | Factory configured - do not | SW18 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW2 | SW3 |
|-------------------------+-----------------+----------------|
| » | 330h | off | off |
|-----+-------------------+-----------------+----------------|
| | 130h | on | on |
|-----+-------------------+-----------------+----------------|
| | 230h | on | off |
|-----+-------------------+-----------------+----------------|
| | 334h | off | on |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW4 | SW5 |
|------------------------+-----------------+-----------------|
| » | C800-CBFFh | off | off |
|---+--------------------+-----------------+-----------------|
| | CC00-CCFFh | off | on |
|---+--------------------+-----------------+-----------------|
| | D800-DBFFh | on | off |
|---+--------------------+-----------------+-----------------|
| | DC00-DFFFh | on | on |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | SW6 | SW7 |
|----------------------+------------------+------------------|
| » | 11 | on | off |
|----+-----------------+------------------+------------------|
| | 10 | on | on |
|----+-----------------+------------------+------------------|
| | 12 | off | on |
|----+-----------------+------------------+------------------|
| | 15 | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| DTC 3274VL can support floptical drives through an ASPI |
| utility. |
+------------------------------------------------------------+