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ULTRA12C

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

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 2

JP10/jumper 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 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

 

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

 

Floppy drive precompensation is 125ns.

JP11/jumper 6

closed

Hard drive port address is 1F0-1F7h

JP12

open

 

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

 

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

 

Hard Drive Interrupt is IRQ15

JP21

pins 1 & 2 closed

CACHE CONFIGURATION

SIMM Size

Jumper JP22

Jumper JP22A

256KB

closed

closed

1MB

open

closed

4MB

closed

open