13 Oct
1999
13 Oct
'99
5:26 p.m.
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