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- From: daleg@mks.com (Dale Groves)
- Subject: Re: 8 inch drive questions
- Message-ID: <1993Jan27.031024.8583@mks.com>
- Keywords: terminators, power connectors
- Organization: Mortice Kern Systems Inc., Waterloo, Ontario, CANADA
- References: <C1H0FH.9H6@mentor.cc.purdue.edu>
- Date: Wed, 27 Jan 1993 03:10:24 GMT
- Lines: 47
-
- In article <C1H0FH.9H6@mentor.cc.purdue.edu> wilker@hopf.math.purdue.edu (Clarence Wilkerson) writes:
- >As I look at the pile of unused (unusable) 8" drives in one corner of
- >my basement, I came up with a couple of questions
- >
- >1) What do I need for the DIP style terminator resistors on Qume DataTrak8
- > DSDS drive?
- >
- >2) I have a couple of fancy 1/2 height NEC 8" drives that use DC power
- > only. What is the pin out on the power plug? I't a little 4 or 5
- >square pins in row connector, not the usual massive block style.
- >
- >3) Does anyone have mods to a cheap PC floppy controller to let it read/write
- > 8" drives? I'm not interested in buying a new card, but have several
- > extra XT and AT floppy controllers to experiment with.
- >
- >
- >--
- >Clarence Wilkerson \ Bitnet: wilker%math.purdue.edu@purccvm
- >Prof. of Math. (topology)\ Internet: wilker@math.purdue.edu
- >Dept. of Mathematics \ messages: (317) 494-1903, FAX 494-0548
- >Purdue University, \ office: (317) 494-1955 (voice/modem)
- >W. Lafayette, Indiana 47907 \
-
- hang 'em off your at if you have lots of8 inch disks to play with - an at
- 5.25 1.2MB floppy is simply a squished 8 inch drive, with one minor exception.
-
- 8 inch drives only support 77 tracks, instead of 80 (at least the ones i have
- used in the past only use 77 - shugart 801, for example). These drives may
- handle 80 tracks if you try to format them that way. if not, then try the
- /t and /n switches to override format's default settings.
-
- the at 1.2MB drives actually changes spindle speed and transfer rate to the
- same values as the old 8 inch drive double density charactistics when in
- high density mode. you might have to build a funny cable to go from 34 pin to
- 50 pin, but in general you should be able to use the 8 inch drive in place of
- a regular 1.2 HD drive
-
- good luck!
-
- daleg
-
-
- --
- || // // ,'/~~\' Dale R. Groves daleg@mks.com
- /||/// //|' `\\\ Mortice Kern Systems Inc. (519) 884-2251
- / | //_// ||\___/ 35 King St. N., Waterloo, Ont., Can. N2J 2W9
- O_/ "Who knows what evil lurks in the hearts of men? ...The SHADOW Knows"
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