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# SCIENTIFIC MICRO SYSTEMS, INC.
OMTI 5100 (REV. N)
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 50-pin SCSI interface |
|--------------------------+---------------------------------|
| Size: | 5.75" x 7.85" |
|--------------------------+---------------------------------|
| Hard drive supported: | Up to two ST506/412 MFM drives |
|--------------------------+---------------------------------|
| Floppy drives supported: | None |
|--------------------------+---------------------------------|
| | |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|------------------------------------------+-----------------|
| 50-pin SCSI interface | J1 |
|------------------------------------------+-----------------|
| 34-pin MFM disk control connector | J2 |
|------------------------------------------+-----------------|
| 20-pin data cable connector | J3 |
|------------------------------------------+-----------------|
| 20-pin data cable connector | J4 |
|------------------------------------------+-----------------|
| DC power connector | J10 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ADDRESS |
|------------------------------------------------------------|
|SCSI| W0/0 | W0/1 | W0/2 | W0/3 | W0/4 | W0/5 | W0/6 | W0/7 |
| ID | | | | | | | | |
|----+------+------+------+------+------+------+------+------|
|» |0|closed| open | open | open | open | open | open | open |
|--+-+------+------+------+------+------+------+------+------|
|» |1| open |closed| open | open | open | open | open | open |
|--+-+------+------+------+------+------+------+------+------|
|» |2| open | open |closed| open | open | open | open | open |
|--+-+------+------+------+------+------+------+------+------|
|» |3| open | open | open |closed| open | open | open | open |
|--+-+------+------+------+------+------+------+------+------|
|» |4| open | open | open | open |closed| open | open | open |
|--+-+------+------+------+------+------+------+------+------|
|» |5| open | open | open | open | open |closed| open | open |
|--+-+------+------+------+------+------+------+------+------|
|» |6| open | open | open | open | open | open |closed| open |
|--+-+------+------+------+------+------+------+------+------|
|» |7| open | open | open | open | open | open | open |closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECTOR CONFIGURATION |
|------------------------------------------------------------|
| Bytes/Sector | Sector/Track | W3 | W4 |
|------------------+---------------+------------+------------|
| » | 256 | 32 | closed | open |
|-----+------------+---------------+------------+------------|
| » | 512 | 17 | open | closed |
|-----+------------+---------------+------------+------------|
| | 512 | 18 | open | open |
|-----+------------+---------------+------------+------------|
| » | 1024 | 9 | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|------------------------------------+-------------+---------|
| » | SCSI parity enabled | W1/pins 1 & | closed |
| | | 2 | |
|---+--------------------------------+-------------+---------|
| » | SCSI parity disabled | W1/pins 2 & | closed |
| | | 3 | |
|---+--------------------------------+-------------+---------|
| » | Factory configured - do not | W5 | N/A |
| | alter | | |
|---+--------------------------------+-------------+---------|
| » | Factory configured - do not | J6 | N/A |
| | alter | | |
|---+--------------------------------+-------------+---------|
| » | Factory configured - do not | W7 | N/A |
| | alter | | |
|---+--------------------------------+-------------+---------|
| » | Factory configured - do not | W8 | N/A |
| | alter | | |
+------------------------------------------------------------+