Re: cbmlink with 3032/3040 pair

On Mon, Mar 5, 2018 at 10:28 PM, Steve Gray <sjgray@rogers.com> wrote:
> Does the directory change when you validate the disk? If so it could just
> mean that the disk contents are still in the buffer. If you initialize
> rather than validate what does it do?

No directory doesn't change, it looks right from the start after the
image is completed.
I can also remove the disk and validate it the next day, then it shows
the correct free blocks.
As I said, it seems the sector 18,0 is never written to the disk.

>
> Just a comment: I think this is the first time I've seen talk of cbmlink. I
> didn't think anyone actually used it. I used it in 2006/7-ish when I first
> got back into cbm equipment, but zoomfloppy came out shortly after with IEEE
> support and I kinda forgot about it. Actually I had added cbmlink support
> into my CBMxfer (CBM-Transfer) but no one ever emailed me that they actually
> used it.... oh well.

a PC64 cable is far too simple than any other method. It's just slow...

> Steve
>
>
> ________________________________
> From: Francesco Messineo <francesco.messineo@gmail.com>
> To: cbm-hackers@musoftware.de
> Sent: Monday, March 5, 2018 3:33 PM
> Subject: Re: cbmlink with 3032/3040 pair
>
> 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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>
>

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