Re: cbmlink with 3032/3040 pair

From: Francesco Messineo <francesco.messineo_at_gmail.com>
Date: Mon, 5 Mar 2018 21:32:55 +0100
Message-ID: <CAESs-_wEjK=-Tq8qVwOF_g8_LfcXTQRfw9=1PecL7S=MhAut0w@mail.gmail.com>
On Mon, Mar 5, 2018 at 8:56 PM,  <silverdr@wfmh.org.pl> wrote:
>
>> On 2018-03-05, at 14:14, Francesco Messineo <francesco.messineo@gmail.com> wrote:
>>
>> This is usually not a big problem, but the disk needs a VALIDATE
>> command after it has been transferred.
>> Does anyone understand why it happens?
>
> DOS differences? DOS differs between the two. My guess is that 1541 shows static data stored in the directory sector, while the other one uses actual sector's metadata.

I don't get what you mean. A disk transferred to a 1541 ends up with
18,0 "overwritten" by the .d64 18,0 sector, while when transferring to
a 3040 (DOS 2, so actually 4040) the 18,0 sector on disk remains the
same as it was originally formatted, so it shows always 664 blocks
free until I issue a VALIDATE to that disk. It looks like the 3040
doesn't actually overwrite the 18,0 sector, which seems odd to me. I
tend to think there's a difference in the PET 3000 cbmlink "server"
code maybe.

Frank

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Received on 2018-03-05 22:04:39

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