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





MD21

EMULEX CORPORATION

MD21

Data bus: None (SCSI to ESDI interface)

Size: Drive card

Hard drives supported: SCSI to two RLL ESDI drives

Floppy drives supported: None

CABLE CONNECTIONS

34-pin control cable connector-hard drive

J1

20-pin data cable connector-drive 0

J2

20-pin data cable connector-drive 1

J3

10-pin connector-user panel (factory use only)

J4

14-pin connector-test (factory use only)

J5

50-pin SCSI connector- to host adapter

J6

4-pin connector-DC power

J7

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Factory configured - do not alter

SW1/switch 4

off

Sector size set to 512 bytes

SW1/switch 5

off

 

Sector size set to 256 bytes

SW1/switch 5

on

Spindle motor starts on power-up

SW1/switch 6

off

 

Spindle motor starts on command

SW1/switch 6

on

Soft error reporting enabled

SW1/switch 7

off

 

Soft error reporting disabled

SW1/switch 7

on

SCSI parity check disabled

SW1/switch 8

off

 

SCSI parity check enabled

SW1/switch 8

on

SCSI ADDRESS

Address

SW1/switch 1

SW1/switch 2

SW1/switch 3

 

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

7

on

on

on

MISCELLANEOUS TECHNICAL NOTES

For the SCSI termination power option, a # 1N5817 diode must be installed at socket CR2 and JP1 must be closed.