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NXT-80

NEXSTOR, INC.

NXT-80

Data bus:

32-bit VL-Bus

Size:

Three/quarter-length, full-height card

Hard drive supported:

Up to seven SCSI-1 & SCSI-2 devices

Floppy drives supported:

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

CONNECTIONS

Function

Location

50-pin SCSI-2 connector - external

CN1

50-pin SCSI connector - internal

CN2

34-pin cable connector - floppy drive

CN3

4-pin connector - drive active LED

JP8

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Port address 340h select

JP1

open

 

Port address 140h select

JP1

closed

Factory configured - do not alter

JP3

N/A

SCSI parity enabled

JP5/jumper 6

closed

 

SCSI parity disabled

JP5/jumper 6

open

Supports hard drive <1GB or >1GB not under MS-DOS

JP6/jumper 1

closed

 

Supports hard drive >1GB under MS-DOS

JP6/jumper 1

open

SCSI disconnect/reselect enabled

JP6/jumper 3

open

 

SCSI disconnect/reselect disabled

JP6/jumper 3

closed

Synchronous negotiation enabled

JP6/jumper 4

open

 

Synchronous negotiation disabled

JP6/jumper 4

closed

Boot up using INT 19 enabled

JP6/jumper 5

open

 

Boot up using INT 19 disabled

JP6/jumper 5

closed

Floppy drive controller enabled

JP7

open

 

Floppy drive controller disabled

JP7

closed

BASE I/O ADDRESS

í Address

JP4/jumper 1

JP4/jumper 2

JP4/jumper 3

D8000h

closed

closed

closed

C8000h

open

closed

closed

CC000h

closed

open

open

D0000h

closed

open

closed

D4000h

closed

closed

open

Disabled

open

open

open

SCSI ID SELECTION

SCSI ID

JP5/jumper 1

JP5/jumper 2

JP5/jumper 3

7

open

open

open

0

closed

closed

closed

1

open

closed

closed

2

closed

open

closed

3

open

open

closed

4

closed

closed

open

5

open

closed

open

6

closed

open

open

INTERRUPT SELECTION

IRQ

JP5/jumper 4

JP5/Jumprt 5

11

closed

open

9

closed

closed

10

open

closed

12

open

open

FLOPTICAL OPTION

Mode

JP6/Jumper 1

JP6/Jumper 2

Support

open

open

No support

closed

closed

Note: This mode is available only under MS-DOS for IOMEGA & Insite floptical drives.

MISCELLANEOUS TECHNICAL NOTES

Remove terminators from host adapter only when using both external & internal devices.