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OMTI 8600, 8610

SCIENTIFIC MICRO SYSTEMS

OMTI 8600, 8610

Data bus:

16-bit, ISA

Size:

Full-length, full-height card

Hard drives supported:

Two MFM ST506/ST412 drives or ESDI drives

Floppy drives supported:

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

CONNECTIONS

Function

Location

34-pin control cable connector - hard drive

J2

20-pin data cable connector - drive 0

J3

20-pin data cable connector - drive 1

J4

34-pin control cable connector - floppy drive

J7

2-pin connector - drive active LED

J12

DRIVE TYPE CONFIGURATION

Cylinders

Heads

W1

W2

W3

W4

ESDI

ESDI

closed

closed

closed

closed

918

15

open

closed

closed

closed

987

7

closed

open

closed

closed

697

5

open

open

closed

closed

306

4

closed

closed

open

closed

977

5

open

closed

open

closed

733

5

closed

open

open

closed

640

6

open

open

open

closed

640

4

closed

closed

closed

open

512

8

open

closed

closed

open

612

2

closed

open

closed

open

612

7

open

open

closed

open

615

4

closed

closed

open

open

612

4

open

closed

open

open

306

6

closed

open

open

open

306

4

open

open

open

open

HARD DRIVE PORT ADDRESS

Address

W5

W6

W22

320h

open

open

closed

 

324h

closed

open

closed

 

328h

open

closed

closed

 

32Ch

closed

closed

closed

 

1A0h

open

open

open

 

1A4h

closed

open

open

 

1A8h

open

closed

open

 

1ACh

closed

closed

open

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive port address is 3F0-3F7h

W7

closed

 

Floppy drive port address is 370-377h

W7

open

Drive 0 sector type is soft

W10

open

 

Drive 0 sector type is hard

W10

closed

Drive 0 set for ST506 drive

W11

open

 

Drive 0 set for ESDI drive

W11

closed

Drive 0 set for fixed media drive

W12

open

 

Drive 0 set for removable media drive

W12

closed

Drive 1 sector type is soft

W13

open

 

Drive 1 sector type is hard

W13

closed

Drive 1 set for ST506 drive

W14

open

 

Drive 1 set for ESDI drive

W14

closed

Drive 1 set for fixed media drive

W15

open

 

Drive 1 set for removable media drive

W15

closed

BYTES PER SECTOR

Bytes per sector/sectors per track

W8

W9

512/17

open

open

 

512/18

closed

open

 

1024/9

open

closed

 

1056/9

closed

closed

MISCELLANEOUS TECHNICAL NOTES

Jumpers W21, W23, W24, W25 are factory configured - do not alter.