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# SCIENTIFIC MICRO SYSTEMS, INC.
OMTI 5200 (REV. E), 5204 (REV. B), 5300 (REV. D),
5400 (REV. C)
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 50-pin SCSI interface |
|---------------+--------------------------------------------|
| Size: | 5.75" x 8" |
|---------------+--------------------------------------------|
| Hard drive | Up to three ST506/412 MFM drives (5300), |
| supported: | up to four ST506/412 MFM drives (5200, |
| | 5204, 5400) |
|---------------+--------------------------------------------|
| Floppy drives | Two 360KB, 720KB (all except 5300) 1.2MB, |
| supported: | 1.44MB (5200, 5400) |
|---------------+--------------------------------------------|
| | |
+------------------------------------------------------------+
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 |
|---------------------------------------------+--------------|
| 34-pin floppy drive connector (not in 5300) | J7 |
|---------------------------------------------+--------------|
| 50-pin tape drive connector (5300, 5400) | J8 |
|---------------------------------------------+--------------|
| 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|
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|--------------------------------------+-----------+---------|
| » | SCSI parity enabled | W1/pins 1 | closed |
| | | & 2 | |
|---+----------------------------------+-----------+---------|
| » | SCSI parity disabled | W1/pins 2 | closed |
| | | & 3 | |
|---+----------------------------------+-----------+---------|
| » | QIC--02 (Tape drive) parity | W2/pins 1 | closed |
| | enabled (5300 & 5400) | & 2 | |
|---+----------------------------------+-----------+---------|
| » | QIC--02 (Tape drive) parity | W2/pins 2 | closed |
| | disabled (5300 & 5400) | & 3 | |
|---+----------------------------------+-----------+---------|
| » | LUN 0 supports ST506/412 MFM | W5 | open |
| | disk type | | |
|---+----------------------------------+-----------+---------|
| » | LUN 0 supports flexible disk | W5 | closed |
| | (5400, 5200, 5204) | | |
|---+----------------------------------+-----------+---------|
| » | LUN 0 is reserved (5300) | W5 | closed |
|---+----------------------------------+-----------+---------|
| » | LUN 1 supports ST506/412 MFM | W6 | open |
| | disk type | | |
|---+----------------------------------+-----------+---------|
| » | LUN 1 supports flexible disk | W6 | closed |
| | (5400, 5200, 5204) | | |
|---+----------------------------------+-----------+---------|
| » | LUN 1 is reserved (5300) | W6 | closed |
|---+----------------------------------+-----------+---------|
| » | LUN 2 supports ST506/412 MFM | W7 | open |
| | disk type | | |
|---+----------------------------------+-----------+---------|
| » | LUN 2 supports flexible disk | W7 | closed |
| | (5400, 5200, 5204) | | |
|---+----------------------------------+-----------+---------|
| » | LUN 2 is reserved (5300) | W7 | closed |
|---+----------------------------------+-----------+---------|
| » | LUN 3 supports ST506/412 MFM | W8 | open |
| | disk type (5200, 5204) | | |
|---+----------------------------------+-----------+---------|
| » | LUN 3 supports tape drive (5400, | W8 | open |
| | 5300) | | |
|---+----------------------------------+-----------+---------|
| » | LUN 3 supports flexible disk | W8 | closed |
| | (5400, 5200, 5204) | | |
|---+----------------------------------+-----------+---------|
| » | LUN 3 supports ST506/412 MFM | W8 | closed |
| | disk type (5300) | | |
|---+----------------------------------+-----------+---------|
| » | Motor on signal always enabled | W14 | closed |
| | (5200, 5204, 5400) | | |
|---+----------------------------------+-----------+---------|
| » | Motor on signal enabled by | W14 | open |
| | command | | |
|---+----------------------------------+-----------+---------|
| » | Ready override signal for | W15 | closed |
| | flexible disk enabled (for | | |
| | drives not supporting Ready | | |
| | signal) | | |
|---+----------------------------------+-----------+---------|
| » | Ready override signal for | W15 | open |
| | flexible disk disabled (for | | |
| | drives í supporting Ready | | |
| | signal) | | |
|---+----------------------------------+-----------+---------|
| » | Factory configured - do not | W17 | N/A |
| | alter | | |
|---+----------------------------------+-----------+---------|
| » | Factory configured - do not | W18 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECTOR CONFIGURATION |
|------------------------------------------------------------|
| Bytes/Sector | Sector/Track | W3 | W4 |
|------------------+---------------+------------+------------|
| » | 256 | 32 | closed | open |
|-----+------------+---------------+------------+------------|
| » | 512 | 17 | open | closed |
|-----+------------+---------------+------------+------------|
| | 512 | 18 | open | open |
|-----+------------+---------------+------------+------------|
| » | 1024 | 9 | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| When installing ST506/412 fixed/removable, 2 LUNs are used |
| which limits the number of the remaining LUNs and |
| therefore the number of drives that can be supported. |
+------------------------------------------------------------+