8 Feb
2009
8 Feb
'09
7 p.m.
I always wondered about this in a way.
I have a couple of 'alignment/test' disks for c64 drives,
originals and copies.
now as far as copies go, the drives were aligned perfectly, run through all tests,
adjusted precisely,
then made copies with those.
so wouldn't that mean it was either 1) close enough or 2) the alignment of any other
drive would only be to that drives setup,
which was as precise as we could get?
so in the end does it really matter all that much?
Dan.
Date: Sun, 8 Feb 2009 20:00:40 -0600
From: jules.richardson99 at gmail.com
To:
Subject: Re: DSD Diags disk found
Fred Cisin wrote:
_________________________________________________________________
How fun is this? IMing with Windows Live Messenger just got better.
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The Dysan Digital Diagnostic Diskette can not be
duplicated with an
unmodified drive, no matter what software or special controller you might
use. (dd, rawcopy, option board, Match-Point, etc.)
I believe there's a 5.25" version that has various portions that are pure
analog waveforms, too - you program your controller to read from those
particular tracks and then observe the waveforms coming off the read head,
using them to optimise alignment. The 8" version may not have been that
"sophisticated"...
Either way, copying / archiving is not really an option. Anyone know what
machine was used to create such disks in the first place?
cheers
Jules