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HB A8

CONTROL CONCEPTS, INC.

HB A8

Data bus: 8-bit, ISA

Size: Half-length, full-height card

Hard drives supported: Up to seven SCSI devices

Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB (Floppy support version only)

MISCELLANEOUS TECHNICAL NOTE

JP6 is not used and should remain open. S1/switch 7 is not used and should remain off.

Turning on S1/switch 8 will result in error

CONTROL CONCEPTS USA

HB A8

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CONNECTIONS

Function

Location

4-pin connector-drive active LED

CN1

50-pin SCSI connector-internal

CN2

34-pin data cable connector-floppy drive

CN3

25-pinSCSI connector-external

CN4

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive enabled

JP1

pins 1 & 2 closed

 

Floppy drive disabled

JP1

pins 2 & 3 closed

Floppy drive address 3F0-3F7h

JP2

pins 1 & 2 closed

 

Floppy drive address 370-377h

JP2

pins 2 & 3 closed

Single spindle speed selected

JP3

open

 

Dual spindle speed selected

JP3

closed

 

IRQ3 (Interrupt request-N/A in DOS)

JP4/jumper 1

closed

 

IRQ4 (Interrupt request-N/A in DOS)

JP4/jumper 2

closed

IRQ5 (Interrupt request-N/A in DOS)

JP4/jumper 3

closed

 

IRQ7 (Interrupt request-N/A in DOS)

JP4/jumper 4

closed

Precompensation value is 125ns

JP5

open

 

Precompensation value is 185ns

JP5

closed

BIOS ADDRESS

Address

S1/switch 1

S1/switch 2

S1/switch 3

C8000-CBE80h

off

on

on

E0000-E3E80h

on

off

on

DC000-DFE80h

off

off

on

D8000-DBE80h

on

on

off

D4000-D7E80h

off

on

off

D0000-D3E80h

on

off

off

CC000-CFE80h

off

off

off

SCSI ADDRESS

SCSI ID #

S1/switch 4

S1/switch 5

S1/switch 6

7

off

off

off

 

6

on

off

off

 

5

off

on

off

 

4

on

on

off

 

3

off

off

on

 

2

on

off

on

 

1

off

on

on

 

0

on

on

on