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ULTRA12F24

ULTRASTOR CORPORATION

ULTRA12F24

Data bus:

16-bit, ISA

Size:

Three/Quarter-length, full-height card

Hard drive supported:

Two ESDI drives

Floppy drives supported:

Two 360KB, 720KB, 1.2MB, or 1.44MB

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 alter

JP4

pins 1 & 2 open

Cache enabled

JP4

pins 3 & 4 open

 

Cache disabled

JP4

pins 3 & 4 closed

Third drive support with a double twisted cable

JP11/A

open

 

Third drive support with a single twisted cable

JP11/A

closed

Floppy Drive 1 is a 3.5 or 5.25 AT floppy

JP11/B

open

 

Floppy Drive 1 is a 3.5 PS/2 floppy

JP11/B

closed

Floppy Drive 0 is a 3.5 or 5.25 AT floppy

JP11/C

open

 

Floppy Drive 0 is a 3.5 PS/2 floppy

JP11/C

closed

Floppy primary port address is 3F0-3F7h

JP11/D

open

 

Floppy secondary port address is 370-377h

JP11/D

closed

Single speed floppy drive support

JP11/E

open

 

Dual speed floppy drive support

JP11/E

closed

Precompensation varies: 250ns, 208ns, 125ns

JP11/F

open

 

Precompensation set to 125ns

JP11/F

closed

Hard disk primary I/O address is 1F0-1F7

JP12

open

 

Hard disk secondary I/O address is 170-177h

JP12

closed

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.