SCIENTIFIC MICRO SYSTEMS

OMTI 510, OMTI 510-HA-3, OMTI 510-HA-7

OMTI 512, OMTI 512-HA-3, OMTI 512-HA-7

Data bus:

8-bit, ISA

Size:

Half-length, half-height card

Hard drive supported:

Up to seven SCSI devices

Floppy drives supported:

None

CONNECTIONS

Function

Location

50-pin SCSI connector - internal

J1

37-pin SCSI connector - external (OMTI512 only)

J2

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

SCSI Busy signal enabled

W1

pins 2 & 3 closed

 

SCSI Busy signal disabled

W1

pins 1 & 2 closed

»

SCSI Message signal enabled

W2

pins 2 & 3 closed

 

SCSI Message signal disabled

W2

pins 1 & 2 closed

»

SCSI parity check enabled

W4

pins 2 & 3 closed

 

SCSI parity check disabled

W4

pins 1 & 2 closed

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

BIOS enabled

W7

open

 

BIOS disabled

W7

closed

»

BIOS address is C800h

W8

open

 

BIOS address is CA00h

W8

closed

»

28-pin EPROM type enabled

W9 and W10

pins 1 & 2 closed

 

24-pin EPROM type enabled

W9 and W10

pins 2 & 3 closed*

»

SCSI Receive parity disabled

W11

pins 1 & 2 closed

 

SCSI Receive parity enabled

W11

pins 2 & 3 closed

Note: Cut the foil trace between pins 1 & 2 on Jumpers W9 and W10 if closing pins 2 & 3

I/O PORT ADDRESS

Address

Jumper W6

Jumper W5

»

320h

open

open

 

324h

open

closed

 

328h

closed

open

 

32Ch

closed

closed

MISCELLANEOUS TECHNICAL NOTES

Jumper W3 is not used and should remain factory configured with pins 1 & 2 in the closed position.

Do not disable SCSI Busy and Message signals (Jumpers W1 and W2)