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# SCIENTIFIC MICRO SYSTEMS
OMTI 510, OMTI 510-HA-3, OMTI 510-HA-7
OMTI 512, OMTI 512-HA-3, OMTI 512-HA-7
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 8-bit, ISA |
|--------------------------+---------------------------------|
| Size: | Half-length, half-height card |
|--------------------------+---------------------------------|
| Hard drive supported: | Up to seven SCSI devices |
|--------------------------+---------------------------------|
| Floppy drives supported: | None |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------------+----------|
| 50-pin SCSI connector - internal | J1 |
|-------------------------------------------------+----------|
| 37-pin SCSI connector - external (OMTI512 only) | J2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|----------------------------------+----------+--------------|
| » | SCSI Busy signal enabled | W1 | pins 2 & 3 |
| | | | closed |
|---+------------------------------+----------+--------------|
| | SCSI Busy signal disabled | W1 | pins 1 & 2 |
| | | | closed |
|---+------------------------------+----------+--------------|
| » | SCSI Message signal enabled | W2 | pins 2 & 3 |
| | | | closed |
|---+------------------------------+----------+--------------|
| | SCSI Message signal disabled | W2 | pins 1 & 2 |
| | | | closed |
|---+------------------------------+----------+--------------|
| » | SCSI parity check enabled | W4 | pins 2 & 3 |
| | | | closed |
|---+------------------------------+----------+--------------|
| | SCSI parity check disabled | W4 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|-------------------------------+--------------+-------------|
| » | BIOS enabled | W7 | open |
|----+--------------------------+--------------+-------------|
| | BIOS disabled | W7 | closed |
|----+--------------------------+--------------+-------------|
| » | BIOS address is C800h | W8 | open |
|----+--------------------------+--------------+-------------|
| | BIOS address is CA00h | W8 | closed |
|----+--------------------------+--------------+-------------|
| » | 28-pin EPROM type | W9 and W10 | pins 1 & 2 |
| | enabled | | closed |
|----+--------------------------+--------------+-------------|
| | 24-pin EPROM type | W9 and W10 | pins 2 & 3 |
| | enabled | | closed* |
|----+--------------------------+--------------+-------------|
| » | SCSI Receive parity | W11 | pins 1 & 2 |
| | disabled | | closed |
|----+--------------------------+--------------+-------------|
| | SCSI Receive parity | W11 | pins 2 & 3 |
| | enabled | | closed |
|------------------------------------------------------------|
| Note: Cut the foil trace between pins 1 & 2 on Jumpers W9 |
| and W10 if closing pins 2 & 3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O PORT ADDRESS |
|------------------------------------------------------------|
| Address | Jumper W6 | Jumper W5 |
|-------------------+--------------------+-------------------|
| » | 320h | open | open |
|---+---------------+--------------------+-------------------|
| | 324h | open | closed |
|---+---------------+--------------------+-------------------|
| | 328h | closed | open |
|---+---------------+--------------------+-------------------|
| | 32Ch | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Jumper W3 is not used and should remain factory configured |
| with pins 1 & 2 in the closed position. |
| |
| Do not disable SCSI Busy and Message signals (Jumpers W1 |
| and W2) |
+------------------------------------------------------------+