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# ULTRASTOR CORPORATION
ULTRA12C
+------------------------------------------------------------+
+------------------------------------------------------------+
Data bus: 16-bit, PC/AT
Size: Full-length, full-height card
Hard drives supported: Two ESDI drives
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
Maximum heads/cyl.: 16 heads and 1024 cylinders
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------+----------------|
| 34-pin data cable connector-floppy drive | J1 |
|-------------------------------------------+----------------|
| 20-pin data cable connector-drive 1 | J3 |
|-------------------------------------------+----------------|
| 20-pin data cable connector-drive 0 | J4 |
|-------------------------------------------+----------------|
| 34-pin control cable connector-hard drive | J5 |
|-------------------------------------------+----------------|
| 4-pin connector-drive active LED | J6 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS |
|------------------------------------------------------------|
| Address | JP10/jumper 1 | JP10/jumper | JP10/jumper |
| | | 2 | 3 |
|--------------+---------------+--------------+--------------|
| | Disabled | open | open | open |
|---+----------+---------------+--------------+--------------|
| » | C800h | open | open | closed |
|---+----------+---------------+--------------+--------------|
| | CC00h | open | closed | open |
|---+----------+---------------+--------------+--------------|
| | D000h | open | closed | closed |
|---+----------+---------------+--------------+--------------|
| | D400h | closed | open | open |
|---+----------+---------------+--------------+--------------|
| | D800h | closed | open | closed |
|---+----------+---------------+--------------+--------------|
| | DC00h | closed | closed | open |
|---+----------+---------------+--------------+--------------|
| | Disabled | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|--------------------------------+--------------+------------|
| » | Factory configured - do | JP2 | open |
| | not alter | | |
|---+----------------------------+--------------+------------|
| » | Factory configured - do | JP3 | closed |
| | not alter | | |
|---+----------------------------+--------------+------------|
| » | Factory configured - do | JP4 | open |
| | not alter | | |
|---+----------------------------+--------------+------------|
| | Battery back-up | JP5 and JP6 | closed |
|---+----------------------------+--------------+------------|
| » | Supports a third floppy on | JP11/jumper | open |
| | DS2 with a twisted cable | 1 | |
|---+----------------------------+--------------+------------|
| | Supports a third floppy on | JP11/jumper | closed |
| | DS4 with a straight cable | 1 | |
|---+----------------------------+--------------+------------|
| » | Floppy drive 1 is an AT | JP11/jumper | open |
| | type drive (5.25" or 3.5") | 2 | |
|---+----------------------------+--------------+------------|
| | Floppy drive 1 is a 3.5" | JP11/jumper | closed |
| | PS/2 type drive | 2 | |
|---+----------------------------+--------------+------------|
| » | Floppy drive 0 is an AT | JP11/jumper | open |
| | type drive (5.25" or 3.5") | 3 | |
|---+----------------------------+--------------+------------|
| | Floppy drive 0 is a 3.5" | JP11/jumper | closed |
| | PS/2 type drive | 3 | |
|---+----------------------------+--------------+------------|
| » | Floppy drive port address | JP11/jumper | open |
| | is 3F0-3F7h | 4 | |
|---+----------------------------+--------------+------------|
| | Floppy drive port address | JP11/jumper | closed |
| | is 370-377h | 4 | |
|---+----------------------------+--------------+------------|
| » | Single speed floppy drive | JP11/jumper | open |
| | supported | 5 | |
|---+----------------------------+--------------+------------|
| | Dual speed floppy drive | JP11/jumper | closed |
| | supported | 5 | |
|---+----------------------------+--------------+------------|
| » | Floppy drive Precomp is | JP11/jumper | open |
| | scaled by data rate: | 6 | |
| | | | |
| | 500KHz=125ns; | | |
| | 300KHz=208ns; 250KHz=250ns | | |
|---+----------------------------+--------------+------------|
| | Floppy drive | JP11/jumper | closed |
| | precompensation is 125ns. | 6 | |
|---+----------------------------+--------------+------------|
| » | Hard drive port address is | JP12 | open |
| | 1F0-1F7h | | |
|---+----------------------------+--------------+------------|
| | Hard drive port address is | JP12 | closed |
| | 170-177h | | |
|---+----------------------------+--------------+------------|
| » | Chassis ground not | JP16 | open |
| | connected to logic ground | | |
|---+----------------------------+--------------+------------|
| | Chassis ground is | JP16 | closed |
| | connected to logic ground | | |
|---+----------------------------+--------------+------------|
| » | Floppy drive enabled | JP17 | closed |
|---+----------------------------+--------------+------------|
| | Floppy drive disabled | JP17 | open |
|---+----------------------------+--------------+------------|
| » | Factory configured - do | JP20/jumpers | open |
| | not alter | 2-5 | |
|---+----------------------------+--------------+------------|
| » | Hard Drive Interrupt is | JP21 | pins 2 & 3 |
| | IRQ14 | | closed |
|---+----------------------------+--------------+------------|
| | Hard Drive Interrupt is | JP21 | pins 1 & 2 |
| | IRQ15 | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| SIMM Size | Jumper JP22 | Jumper JP22A |
|------------------+--------------------+--------------------|
| 256KB | closed | closed |
|------------------+--------------------+--------------------|
| 1MB | open | closed |
|------------------+--------------------+--------------------|
| 4MB | closed | open |
+------------------------------------------------------------+