Micropolis HDs & WD1006V-SR2 RLL 1:1 Controllers

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#491

From: Fan Jiao
Date: Fri, 25 May 1990 07:37

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I posted a msg asking for help on the issues of MFM and RLL.  And I got several
very helpful responses and pointers.  And I'd like to share with you.

I have Micropolis M1335 and M1323.  The parameters are:
1024 Cyl X 8 Heads X 17 Sectors/1024 Cyl X 4 Heads X 17 Sectors.


I got a new WD1006V-SR2 to re-format Micropolis' 71Meg(1335) and 34Meg(1323).
I got 107 Meg from the 1335, while 43 Meg, 1323(I could not find any closer
match to 1024X4; instead I used 820X4).

I ran SI on C:, and the index is 3.6, compared with 2.7 in MFM 3:1 case.
I also did CORETEST.  The transfer rate now is 672 KB/sec, while it was
162 before.
--
Fan Jiao(Chiao)           
x 1615 | M/S 9U-510

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!mips!sgi!fanj@remb6489.wpd.sgi.com
From: fanj@remb6489.wpd.sgi.com (Fan Jiao)
Newsgroups: alt.msdos.programmer,comp.sys.ibm.pc,comp.sys.ibm.pc.programmer
Subject: Micropolis HDs & WD1006V-SR2 RLL 1:1 Controllers
Keywords: MFM, RLL, WD, M1335, M1323
Message-ID: <60997@sgi.sgi.com>
Date: 25 May 90 07:37:28 GMT
Sender: fanj@remb6489.wpd.sgi.com
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 18