Re: Write Signal on Disk II Question

[Linards Ticmanis <ticmanis@gmx.de>]

ferdimh@gmx.de wrote:

> Using a '74 one can reencode the signal read from disk and write it to
> another disk at the same time. Then you only need to step over the
> tracks while reading and you shold have a working copy (maybe you'll
> need some circuitry to avoid writing during the seek).

A good idea, however it won't work if you start/end the writing in the
middle of a sector. The rotation speed is not constant enough to "hit"
the exact same bit the next time around. So you will need to start/end
the write in a gap. This means you have to detect gaps. Also, nibble
counts won't be exact without taking extra measures. So the idea of
doing this entirely "dumb" is probably not workable.

-- 
Linards Ticmanis