On Wed, 13 Oct 1999, Jeffrey l Kaneko wrote:
>
> Guys:
>
> This is one of a very small number of SCSI bridge
> controllers that can handle 24Mhz ESDI drives.
> Does anyone have the docs for this? I need to know
> at least what the DIP switches do; I've figured
> out the addressing part, but I need to know if the
> sectoring can be adjusted, if it needs hard or
> soft sectoring, if the SCSI parity can be set, etc.
>
> Any info would be seriously appreciated.
>
>
> Jeff
> ___________________________________________________________________
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>
Jeff, I append this on the chance that the MD-21 is similar enough to
the MD-23. The line draw didn't take, but I think you can deduce which
description goes with which switch.
- don
MD21 SCSI/ESDI BRIDGE CONTROLLER ASSY # MU2110402
SWITCH SETTINGS
12345678 SW1: ON = 1, OFF = 0
SCSI Bus Parity Check Option
1 Enable
0 Disable
Soft Errors Report
1 Soft errors are not reported
0 Soft errors are reported
Drive Spinup Option
1 Drives are not spun up automatically
0 Drives are spun up automatically
Physical Sector Size
1 256 bytes (soft-sectored drives only)
0 512 bytes (soft-sectored drives only)
Not used - set to OFF
SCSI Bus Address Selection
SCSI ID 0 through 7: MSB = SW1-3 and LSB = SW1-1
SUPPORTED DRIVES
Vendor/Model Sec/Track ISG PLO Bytes/ Minimum
Size & Type Size Size Track Bytes/Sec
CAST 10203 35/512 Soft 18 18 20880 596
CDC WREN III 94166-182 36/512 Hard 16 11 20880 580
CDC WREN V 94186-38 36/512 Hard 16 11 20880 580
FUJITSU M2246E 35/512 Hard 20 12 20864 596
FUJITSU M2249E 35/512 Hard 20 12 20864 596
HEWLET-PACKARD 98532EA 64/256 Embed 44 13 22400 350
HITACHI DK512 35/512 Hard 29 11 20944 538
HITACHI DK514 51/512 Hard 33 11 30240 592
MAXTOR EXT-4175 34/512 Soft 12 26 20808 612
MAXTOR EXT-4380 34/512 Soft 12 26 20808 612
MAXTOR EXT-4380E 34/512 Soft 14 24 20940 615
MAXTOR EXT-8380E 52/512 Hard 20 14 31410 592
MAXTOR EXT-8760E 52/512 Hard 20 14 31410 592
MICROPOLIS 1350 36/512 Hard 16 11 20832 578
MICROPOLIS 1558 36/512 Hard 16 11 20832 578
NEC D5652 35/512 Hard 24 11 20992 585
PRIAM 638 36/512 Hard 12 10 20832 578
SIEMENS 1300 35/512 Embed 32 16 21280 608
TOSHIBA MK-156FA-I 36/512 Hard 20 11 20832 595
MINISCRIBE 9380E 36/512 Hard 16 14 20382 598
Terminator resistor location: U22 and U35
Received on Thu Oct 14 1999 - 00:26:02 BST