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# ULTRASTOR CORPORATION
ULTRA12F24
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 16-bit, ISA |
|-------------------+----------------------------------------|
| Size: | Three/Quarter-length, full-height card |
|-------------------+----------------------------------------|
| Hard drive | Two ESDI drives |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB, or 1.44MB |
| supported: | |
+------------------------------------------------------------+
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/A | JP10/B | JP10/C |
|-------------------+-------------+-------------+------------|
| | 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 not | JP4 | pins 1 & 2 |
| | alter | | open |
|---+--------------------------------+----------+------------|
| » | Cache enabled | JP4 | pins 3 & 4 |
| | | | open |
|---+--------------------------------+----------+------------|
| | Cache disabled | JP4 | pins 3 & 4 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Third drive support with a | JP11/A | open |
| | double twisted cable | | |
|---+--------------------------------+----------+------------|
| | Third drive support with a | JP11/A | closed |
| | single twisted cable | | |
|---+--------------------------------+----------+------------|
| » | Floppy Drive 1 is a 3.5 or | JP11/B | open |
| | 5.25 AT floppy | | |
|---+--------------------------------+----------+------------|
| | Floppy Drive 1 is a 3.5 PS/2 | JP11/B | closed |
| | floppy | | |
|---+--------------------------------+----------+------------|
| » | Floppy Drive 0 is a 3.5 or | JP11/C | open |
| | 5.25 AT floppy | | |
|---+--------------------------------+----------+------------|
| | Floppy Drive 0 is a 3.5 PS/2 | JP11/C | closed |
| | floppy | | |
|---+--------------------------------+----------+------------|
| » | Floppy primary port address is | JP11/D | open |
| | 3F0-3F7h | | |
|---+--------------------------------+----------+------------|
| | Floppy secondary port address | JP11/D | closed |
| | is 370-377h | | |
|---+--------------------------------+----------+------------|
| » | Single speed floppy drive | JP11/E | open |
| | support | | |
|---+--------------------------------+----------+------------|
| | Dual speed floppy drive | JP11/E | closed |
| | support | | |
|---+--------------------------------+----------+------------|
| » | Precompensation varies: 250ns, | JP11/F | open |
| | 208ns, 125ns | | |
|---+--------------------------------+----------+------------|
| | Precompensation set to 125ns | JP11/F | closed |
|---+--------------------------------+----------+------------|
| » | Hard disk primary I/O address | JP12 | open |
| | is 1F0-1F7 | | |
|---+--------------------------------+----------+------------|
| | Hard disk secondary I/O | JP12 | closed |
| | address is 170-177h | | |
|---+--------------------------------+----------+------------|
| » | Floppy drive enabled | JP17 | closed |
|---+--------------------------------+----------+------------|
| | Floppy drive disabled | JP17 | open |
|---+--------------------------------+----------+------------|
| » | Interrupt is IRQ14 | JP20 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | Interrupt is IRQ15 | JP20 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION NOTE |
|------------------------------------------------------------|
| Note: The ULTRA12F24 is installed with 32KB of cache. |
+------------------------------------------------------------+