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# SCIENTIFIC MICRO SYSTEMS
OMTI 5510, OMTI 6510
+------------------------------------------------------------+
+------------------------------------------------------------+
Data bus: 8-bit, ISA/AT
Size: Half-length, full-height card
Hard drives supported: OMTI 5510: Two MFM ST506/412 drives
OMTI 6510: Two RLL ESDI drives
Floppy drives supported: None
Maximum Hds/Cyls: 16 heads and 2048
Interleave 1:1
(IMG) IMG 1
Note: Pin 1 on cable connectors is shown for the 5510.
For the 6510, pin orientation is opposite, with pin 1 located
in the upper left corner.
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------+----------------|
| 34-pin control cable connector-hard drive | J2 |
|-------------------------------------------+----------------|
| 20-pin data cable connector-drive 0 | J3 |
|-------------------------------------------+----------------|
| 20-pin data cable connector-drive 1 | J4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | BIOS enabled | W7 | open |
|---+-----------------------------------+----------+---------|
| | BIOS disabled | W7 | closed |
|---+-----------------------------------+----------+---------|
| » | BIOS address is C8000h | W8 | open |
|---+-----------------------------------+----------+---------|
| | BIOS address is CA000h | W8 | closed |
|---+-----------------------------------+----------+---------|
| » | Drive 0 soft sectored (5510 only) | W11 | open |
|---+-----------------------------------+----------+---------|
| | Drive 0 hard sectored (5510 only) | W11 | closed |
|---+-----------------------------------+----------+---------|
| » | Drive 1 soft sectored (5510 only) | W14 | open |
|---+-----------------------------------+----------+---------|
| | Drive 1 hard sectored (5510 only) | W14 | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O PORT ADDRESS |
|------------------------------------------------------------|
| Address | Jumper W5 | Jumper W6 |
|-------------------+--------------------+-------------------|
| » | 320h | open | open |
|---+---------------+--------------------+-------------------|
| | 324h | closed | open |
|---+---------------+--------------------+-------------------|
| | 328h | open | closed |
|---+---------------+--------------------+-------------------|
| | 32Ch | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECTOR CONFIGURATION JUMPERS |
|------------------------------------------------------------|
| Bytes per Sector | SPT | Jumper W9 | Jumper W10 |
|---------------------+--------+--------------+--------------|
| | 512 | 18 | open | open |
|-------+-------------+--------+--------------+--------------|
| | 256 | 32 | closed | open |
|-------+-------------+--------+--------------+--------------|
| » | 512 | 17 | open | closed |
|-------+-------------+--------+--------------+--------------|
| | 1024 | 9 | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Drive | Drive 0 | Drive 1 | |
|---------------+-----------+----------+---------------------|
| | Type | Jumper | Jumper | Jumper | Jumper |
| | | W12 | W13 | W15 | W16 |
|---+-----------+-----------+----------+----------+----------|
| » | Fixed | open | open | open | open |
|---+-----------+-----------+----------+----------+----------|
| | Reserved | closed | open | closed | open |
|---+-----------+-----------+----------+----------+----------|
| | Reserved | open | closed | open | closed |
|---+-----------+-----------+----------+----------+----------|
| | Removable | closed | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE TYPE CONFIGURATION |
|------------------------------------------------------------|
| DRIVE 1 | DRIVE 0 | BIOS | |
| | | #1002411 | |
|---------+---------+------------+---------------------------|
|Jumepr W1|Jumper W2| Jumper W3 |Jumper W4|Cyl.|Hds.|Precomp|
|---------+---------+------------+---------+----+----+-------|
| closed | closed | closed | closed | 2 |612 | 400 |
|---------+---------+------------+---------+----+----+-------|
| open | closed | open | closed | 2 |612 | 128 |
|---------+---------+------------+---------+----+----+-------|
| closed | open | closed | open | 6 |306 | 128 |
|---------+---------+------------+---------+----+----+-------|
| open | open | open | open | 4 |306 | 128 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE CONFIGURATION JUMPERS - BIOS #1002450, #-2451, |
| -#-2302 & #-2570, |
|------------------------------------------------------------|
| W1 | W2 | W3 | W4 | HDS | CYLS | WPC |
|----------+--------+--------+--------+------+-------+-------|
| closed | closed | closed | closed | 15 | 918 | none |
|----------+--------+--------+--------+------+-------+-------|
| closed | closed | closed | open | 4 | 640 | 256 |
|----------+--------+--------+--------+------+-------+-------|
| closed | closed | open | closed | 5 | 645 | 320 |
|----------+--------+--------+--------+------+-------+-------|
| closed | closed | open | open | 4 | 512 | 256 |
|----------+--------+--------+--------+------+-------+-------|
| closed | open | closed | closed | 7 | 987 | none |
|----------+--------+--------+--------+------+-------+-------|
| closed | open | closed | open | 2 | 612 | 400 |
|----------+--------+--------+--------+------+-------+-------|
| closed | open | open | closed | 7 | 634 | 320 |
|----------+--------+--------+--------+------+-------+-------|
| closed | open | open | open | 6 | 306 | 128 |
|----------+--------+--------+--------+------+-------+-------|
| open | closed | closed | closed | 11 | 918 | none |
|----------+--------+--------+--------+------+-------+-------|
| open | closed | closed | open | 8 | 512 | 256 |
|----------+--------+--------+--------+------+-------+-------|
| open | closed | open | closed | 11 | 754 | none |
|----------+--------+--------+--------+------+-------+-------|
| open | closed | open | open | 4 | 612 | 256 |
|----------+--------+--------+--------+------+-------+-------|
| open | open | closed | closed | 5 | 697 | 256 |
|----------+--------+--------+--------+------+-------+-------|
| open | open | closed | open | 2 | 612 | 128 |
|----------+--------+--------+--------+------+-------+-------|
| open | open | open | closed | 6 | 640 | 256 |
|----------+--------+--------+--------+------+-------+-------|
| open | open | open | open | 4 | 306 | 128 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE CONFIGURATION JUMPERS - BIOS #1002452 |
|------------------------------------------------------------|
| W1 | W2 | W3 | W4 | HDS. | CYLS. | WPC |
|--------+--------+--------+--------+--------+--------+------|
| closed | closed | closed | closed | 3 | 1024 | 512 |
|--------+--------+--------+--------+--------+--------+------|
| open | closed | closed | closed | 5 | 1024 | 512 |
|--------+--------+--------+--------+--------+--------+------|
| closed | closed | open | closed | 7 | 1024 | 512 |
|--------+--------+--------+--------+--------+--------+------|
| open | closed | open | closed | 8 | 1024 | 512 |
|--------+--------+--------+--------+--------+--------+------|
| closed | open | closed | closed | 2 | 612 | 128 |
|--------+--------+--------+--------+--------+--------+------|
| open | open | closed | closed | 4 | 612 | 128 |
|--------+--------+--------+--------+--------+--------+------|
| closed | open | open | closed | 2 | 615 | 128 |
|--------+--------+--------+--------+--------+--------+------|
| open | open | open | closed | 4 | 615 | 128 |
|--------+--------+--------+--------+--------+--------+------|
| closed | closed | closed | open | 4 | 512 | 256 |
|--------+--------+--------+--------+--------+--------+------|
| open | closed | closed | open | 6 | 512 | 256 |
|--------+--------+--------+--------+--------+--------+------|
| closed | closed | open | open | 8 | 512 | 256 |
|--------+--------+--------+--------+--------+--------+------|
| open | closed | open | open | 3 | 697 | 128 |
|--------+--------+--------+--------+--------+--------+------|
| open | open | closed | open | 9 | 925 | 128 |
|--------+--------+--------+--------+--------+--------+------|
| closed | open | closed | open | 5 | 697 | 128 |
|--------+--------+--------+--------+--------+--------+------|
| closed | open | open | open | 6 | 306 | 128 |
|--------+--------+--------+--------+--------+--------+------|
| open | open | open | open | 4 | 306 | 128 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE CONFIGURATION JUMPERS - BIOS #1002571 |
|------------------------------------------------------------|
| W1 | W2 | W3 | W4 | HDS. | CYLS. | WPC |
|--------+--------+--------+--------+-------+--------+-------|
| closed | closed | closed | closed | 8 | 1024 | none |
|--------+--------+--------+--------+-------+--------+-------|
| open | closed | closed | closed | 4 | 612 | none |
|--------+--------+--------+--------+-------+--------+-------|
| closed | open | closed | closed | 6 | 615 | none |
|--------+--------+--------+--------+-------+--------+-------|
| open | open | closed | closed | 4 | 616 | none |
|--------+--------+--------+--------+-------+--------+-------|
| closed | closed | open | closed | 7 | 987 | none |
|--------+--------+--------+--------+-------+--------+-------|
| open | closed | open | closed | 7 | 1166 | none |
|--------+--------+--------+--------+-------+--------+-------|
| closed | open | open | closed | 11 | 1224 | none |
|--------+--------+--------+--------+-------+--------+-------|
| open | open | open | closed | 15 | 1224 | none |
|--------+--------+--------+--------+-------+--------+-------|
| closed | closed | closed | open | 4 | 820 | none |
|--------+--------+--------+--------+-------+--------+-------|
| open | closed | closed | open | 6 | 820 | none |
|--------+--------+--------+--------+-------+--------+-------|
| closed | open | closed | open | 5 | 1024 | none |
|--------+--------+--------+--------+-------+--------+-------|
| open | open | closed | open | 9 | 1024 | none |
|--------+--------+--------+--------+-------+--------+-------|
| closed | closed | open | open | 5 | 830 | none |
|--------+--------+--------+--------+-------+--------+-------|
| open | closed | open | open | 7 | 830 | none |
|--------+--------+--------+--------+-------+--------+-------|
| closed | open | open | open | 10 | 830 | none |
|--------+--------+--------+--------+-------+--------+-------|
| open | open | open | open | 4 | 615 | none |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE CONFIGURATION JUMPERS - BIOS #1002312 |
|------------------------------------------------------------|
| W1 | W2 | W3 | W4 | Hds. | Cyls. | Step |
| | | | | | (RWC) | Rate |
|--------+--------+--------+--------+------+---------+-------|
| open | open | open | open | 4 | 615 | 25 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| open | open | open | closed | 5 | 987 | 10 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| open | open | closed | open | 4 | 612 | 25 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| open | open | closed | closed | 8 | 640 | 25 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| open | closed | open | open | 4 | 306 | 25 m |
| | | | | | (128) | sec |
|--------+--------+--------+--------+------+---------+-------|
| open | closed | open | closed | 8 | 612 | 25 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| open | closed | closed | open | 10 | 830 | 10 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| open | closed | closed | closed | 6 | 640 | 25 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| closed | open | open | open | 4 | 306 | 25 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| closed | open | open | closed | 7 | 830 | 10 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| closed | open | closed | open | 4 | 612 | 25 m |
| | | | | | (128) | sec |
|--------+--------+--------+--------+------+---------+-------|
| closed | open | closed | closed | 15 | 918 | 10 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| closed | closed | open | open | 2 | 615 | 25 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| closed | closed | open | closed | 5 | 980 | 25 m |
| | | | | | (700) | sec |
|--------+--------+--------+--------+------+---------+-------|
| closed | closed | closed | open | 8 | 1024 | 10 m |
| | | | | | | sec |
|--------+--------+--------+--------+------+---------+-------|
| closed | closed | closed | closed | 4 | 640 | 25 m |
| | | | | | | sec |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| W1 through W4 are used to configure the drive type. To |
| support most of the drives on the market, there have been |
| several different BIOS's offered. The different BIOS drive |
| type tables are listed above with the proper jumper |
| settings. |
+------------------------------------------------------------+