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OMTI 9542

SCIENTIFIC MICRO SYSTEMS, INC.

OMTI 9542

Data bus:

16-bit, ISA

Size:

Three/quarter-length, full-height card

Hard drive supported:

Up to 7 SCSI devices

Floppy drives supported:

None

CONNECTIONS

Function

Location

4-pin connector - drive active LED

J1

34-pin floppy drive connector

J2

50-pin SCSI connector - internal

J3

50-pin SCSI connector - external

J4

SCSI ID

SCSI ID

SW1/1

SW1/2

SW1/3

7

on

on

on

 

0

off

off

off

 

1

on

off

off

 

2

off

on

off

 

3

on

on

off

 

4

off

off

on

 

5

on

off

on

 

6

off

on

on

USER CONFIGURABLE SETTINGS

Function

Location

Setting

SCSI parity enabled

SW1/4

on

 

SCSI parity disabled

SW1/4

off

Auto SCSI sense enabled

SW1/5

on

 

Auto SCSI sense disabled

SW1/5

off

Sync negotiation disabled

SW1/6

on

 

Sync negotiation enabled

SW1/6

off

Floppy primary address is 3Fxh

W14

open

 

Floppy secondary address is 37xh

W14

closed

I/O channel ready enabled

W17/pins 1 & 2

closed

 

I/O channel ready disabled

W17/pins 2 & 3

closed

INTERRUPT SELECTION

IRQ

SW2/6

SW2/7

SW2/8

W3

W4

W5

W6

W7

W8

11

on

on

on

open

open

open

closed

open

open

 

9

on

off

on

open

open

open

open

open

closed

 

10

off

on

on

open

open

open

open

closed

open

 

12

off

off

on

open

open

closed

open

open

open

 

14

on

on

off

open

closed

open

open

open

open

 

15

off

on

off

closed

open

open

open

open

open

 

Rsrvd.

off

off

off

N/A

N/A

N/A

N/A

N/A

N/A

 

Rsrvd.

on

off

off

N/A

N/A

N/A

N/A

N/A

N/A

DMA SELECTION

DMA

SW1/7

SW1/8

5

on

on

 

6

off

on

 

7

on

off

 

Disabled

off

off

FLOPPY DISK CONTROLLER CONFIGURATION

Controller

W15

W16

Enabled

closed

closed

Disabled

open

open

DMA TRANSFER RATE

Transfer Rate

W11

W13

5.0 MB/sec

open

open

 

5.7 MB/sec

open

closed

 

6.7 MB/sec

closed

open

 

8.0 MB/sec

closed

closed

I/O BASE ADDRESS

Address

SW2/1

SW2/2

SW2/3

330h-333h

on

on

on

 

130h-133h

on

off

on

 

134h-137h

on

off

off

 

230h-233h

off

on

on

 

234h-237h

off

on

off

 

334h-237h

on

on

off

 

Reserved

off

off

off

 

Reserved

off

off

on

BIOS BASE ADDRESS

Address

SW2/4

SW2/5

0DC000h

on

on

0C8000h

off

off

0CC000h

on

off

0D8000h

off

on

MISCELLANEOUS TECHNICAL NOTES

The terminators must remain installed.