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