Search found 340 matches

by brightcaster
Fri Jan 22, 2021 5:56 pm
Forum: Support
Topic: 5.25 floppies image profile
Replies: 11
Views: 324

Re: 5.25 floppies image profile

A preservation stream is always preferred, as there are some information in it which are not stored in the standard mfm image. Just for example: The order of the sectors on side 2 in your stream is very unique! It doesn't start with sector 0 (next to the index signal) but with sector 4 instead, havi...
by brightcaster
Tue Jan 19, 2021 6:33 pm
Forum: Support
Topic: 5.25 floppies image profile
Replies: 11
Views: 324

Re: 5.25 floppies image profile

Aahrg! Yes it looks as if HxC is bad in this case and the floppy is fine! Never saw this behavior before So now we know that it's standard mfm encoding, 400k in size, organized double-sided with 40 cylinders, 10 sectors, 512 byte. And its not MS-DOS, CPM or UNIX (according to whats written on it). S...
by brightcaster
Tue Jan 19, 2021 9:32 am
Forum: Support
Topic: KryoFlux stopped working
Replies: 3
Views: 96

Re: KryoFlux stopped working

Could also be the track zero sensor not being recognized! I would check for dust on the sensor first. If that doesn't solve it, I would try a different cable...

I agree with ZrX in that the printing on the screen would be much more helpful than the video in this case!

David
by brightcaster
Sun Jan 17, 2021 7:18 pm
Forum: Support
Topic: 5.25 floppies image profile
Replies: 11
Views: 324

Re: 5.25 floppies image profile

Yes, it would be nice to see a dump with some data on it and not just an empty disk. It would also be interesting to see if the last tracks are unformatted per design (on each floppy) or or only an error on that particular floppy. The drive seems to be fine. There are no errors in the dump (at least...
by brightcaster
Sat Jan 16, 2021 4:39 pm
Forum: Support
Topic: 5.25 floppies image profile
Replies: 11
Views: 324

Re: 5.25 floppies image profile

This decodes fine to mfm sector image with 40 tracks, 10 sectors , 512 byte. But the last 6 tracks on side 2 are missing or not formatted! And the floppy looks as beeing almost empty (not just formatted but filled with hex 6D). I don't have any clue about the filesystem at all!

David
by brightcaster
Wed Jan 13, 2021 10:35 pm
Forum: Support
Topic: 5.25 floppies image profile
Replies: 11
Views: 324

Re: 5.25 floppies image profile

Nobody can tell that if you don't provide some information about the computer system they are made with! Just being 5.25 inch in size it could be everything from the profiles list...

David
by brightcaster
Thu Dec 24, 2020 2:57 pm
Forum: General
Topic: C64 format info
Replies: 8
Views: 521

Re: C64 format info

There is a lot of info about the different protection schemes at this place:

https://c64preservation.com/dp.php?pg=home

David
by brightcaster
Fri Dec 04, 2020 3:59 pm
Forum: Feature Requests
Topic: GUI Bug report on linux/OpenJDK
Replies: 1
Views: 506

Re: GUI Bug report on linux/OpenJDK

That looks like what has been discussed in this thread before:

viewtopic.php?f=3&t=1657&hilit=openjdk

David
by brightcaster
Thu Nov 26, 2020 12:42 pm
Forum: Support
Topic: Question about a copy protection, Contra Copy
Replies: 8
Views: 272

Re: Question about a copy protection, Contra Copy

That's how it looks in the HxC Analyzer...

David
by brightcaster
Sun Nov 22, 2020 2:39 pm
Forum: Support
Topic: Question about a copy protection, Contra Copy
Replies: 8
Views: 272

Re: Question about a copy protection, Contra Copy

There are 32 overlapping sectors on track 1 side 0. Easy to write with a sector orientated controller but impossible to read with all it contents. So yes you can't copy that with any WD controller. But it should be no problem for a track orientated controller like kryoflux. Tested it on a WinXP Lapt...