...because we can't all be on the bleeding edge...





OMTI 5200 (REV. E), 5204 (REV. B), 5300 (REV. D),

SCIENTIFIC MICRO SYSTEMS, INC.

OMTI 5200 (REV. E), 5204 (REV. B), 5300 (REV. D),

5400 (REV. C)

Data bus:

50-pin SCSI interface

Size:

5.75" x 8"

Hard drive supported:

Up to three ST506/412 MFM drives (5300), up to four ST506/412 MFM drives (5200, 5204, 5400)

Floppy drives supported:

Two 360KB, 720KB (all except 5300) 1.2MB, 1.44MB (5200, 5400)

   

CONNECTIONS

Function

Location

50-pin SCSI interface

J1

34-pin MFM disk control connector

J2

20-pin data cable connector

J3

20-pin data cable connector

J4

34-pin floppy drive connector (not in 5300)

J7

50-pin tape drive connector (5300, 5400)

J8

DC power connector

J10

SCSI ADDRESS

SCSI ID

W0/0

W0/1

W0/2

W0/3

W0/4

W0/5

W0/6

W0/7

0

closed

open

open

open

open

open

open

open

1

open

closed

open

open

open

open

open

open

2

open

open

closed

open

open

open

open

open

3

open

open

open

closed

open

open

open

open

4

open

open

open

open

closed

open

open

open

5

open

open

open

open

open

closed

open

open

6

open

open

open

open

open

open

closed

open

7

open

open

open

open

open

open

open

closed

USER CONFIGURABLE SETTINGS

Function

Location

Setting

SCSI parity enabled

W1/pins 1 & 2

closed

SCSI parity disabled

W1/pins 2 & 3

closed

QIC--02 (Tape drive) parity enabled (5300 & 5400)

W2/pins 1 & 2

closed

QIC--02 (Tape drive) parity disabled (5300 & 5400)

W2/pins 2 & 3

closed

LUN 0 supports ST506/412 MFM disk type

W5

open

LUN 0 supports flexible disk (5400, 5200, 5204)

W5

closed

LUN 0 is reserved (5300)

W5

closed

LUN 1 supports ST506/412 MFM disk type

W6

open

LUN 1 supports flexible disk (5400, 5200, 5204)

W6

closed

LUN 1 is reserved (5300)

W6

closed

LUN 2 supports ST506/412 MFM disk type

W7

open

LUN 2 supports flexible disk (5400, 5200, 5204)

W7

closed

LUN 2 is reserved (5300)

W7

closed

LUN 3 supports ST506/412 MFM disk type (5200, 5204)

W8

open

LUN 3 supports tape drive (5400, 5300)

W8

open

LUN 3 supports flexible disk (5400, 5200, 5204)

W8

closed

LUN 3 supports ST506/412 MFM disk type (5300)

W8

closed

Motor on signal always enabled (5200, 5204, 5400)

W14

closed

Motor on signal enabled by command

W14

open

Ready override signal for flexible disk enabled (for drives not supporting Ready signal)

W15

closed

Ready override signal for flexible disk disabled (for drives í supporting Ready signal)

W15

open

Factory configured - do not alter

W17

N/A

Factory configured - do not alter

W18

N/A

SECTOR CONFIGURATION

Bytes/Sector

Sector/Track

W3

W4

256

32

closed

open

512

17

open

closed

 

512

18

open

open

1024

9

closed

closed

MISCELLANEOUS TECHNICAL NOTES

When installing ST506/412 fixed/removable, 2 LUNs are used which limits the number of the remaining LUNs and therefore the number of drives that can be supported.