CP/M

From: Charles A. Davis <cad_at_gamewood.net>
Date: Thu Jun 18 18:21:52 1998

Allison J Parent wrote:
>
> <I wonder if implemented if it would be necessary to let the read
> <electronics know which sensor it was reading to compensate for the
> <rotation positional difference. Or whether when reading the flippy
> <side it would simply wait longer to read the sector header.
> <
> < - don
>
> No, the relative position is the same as the index hole occurs and you
> start formatting there. What that means is sector 1 is displaced about
> 1/3 of a turn from the "normal" unflipped position.
>
> Allison

Wait a minute folks. Remember, the 'flippy' floppy, was intended to be
turnned over, and re-inserted into a 'single side drive'. IF you are
reading and writing to the second side _without_ the 'flip' operation,
you need to be writing and reading the data stream, and inverting the
order of the data for the whole track.

Chuck



-- 
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He, who will not reason, is a bigot;       William Drumond,
he, who cannot, is a fool;                  Scottish writer
and he, who dares not, is a slave.              (1585-1649)
While he that does, is a free man!          Joseph P. 1955-
-----------------------------------------------------------
Chuck Davis  /  Sutherlin Industries   FAX # (804) 799-0940
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Received on Thu Jun 18 1998 - 18:21:52 BST

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