Re: 4040

From: Ruud Baltissen (
Date: 2000-12-21 07:55:01

Hallo William,

> I uploaded the program READ6530 to funet some time ago.  I don't know
> where it ended up.  It will copy the contents of the 6530 ROM to a disk
> file.

I doublechecked things by replacing the ROMs and the 6530 of a working 4040
with the DOS 1 versions. The computer answered "file not found" again. I
haven't digged up the SCHs yet but I assume the 6530 is responcible for
reading the actual data. So if there is something wrong with its I/O, one
can expect the above message. Unless someone has another explanation.

> The number of sectors on a track is defined by a paramater table in DOS.

That's why expected different ROM-images. An earlier mail expressed my
confusin: we have three machines and only 2 DOS-versions.

Groetjes, Ruud

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