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DjayBee

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Posts posted by DjayBee

  1. Your ATX was OK and I was able to generate disk 2 with the atx.pl from yesterday. The only thing I had to do manually was to change the sector_status for sector 361 from $48 (bad CRC) to $00 (OK) with a hex editor.

     

    Now we have restored two disks (see attachment).

    One corrupt ATX + two good sector copies = two good ATXs :thumbsup:

     

    Can you change your script to copy whole tracks between images?

    I have one more good sector copy which I could combine with a corrupt ATX to have a good ATX.

    In this case the ATX misses sectors and your current script cannot add them from the ATR.

     

    Btw.: Alle these disks need BASIC to run.

    SurvivalMath-ATX.zip

    TheSemanticCalculator.zip

  2. Hi,

    is there some software to modify ATX files?

    Short story:
    - Replace a bit-rotten sector with its good original
    - Overwrite several good tracks of an ATX with content from a different ATR

    Long story:
    Kevin Savetz found an educational title from Sunburst Communications (Survival Math) but has only plain sector copies of the two disks.
    Recently I found an ATX of disk 1 on Atarimania, but it obviously contains one bad sector which should not be bad.

    By taking data from both images of disk 1 and cracking the protection I was able to make a working copy of it.

    Since Sunburst used the exact same protection down to the location on disk for several disks, I was also able to make a working crack of disk 2. I took the protection part from disk 1 and the remaining sectors from disk 2.

    I now would like to replace the bad sector in the ATX of disk 1 with the correct one from Kevin's ATR.
    Then I want to inject the real data for disk 2 in an ATX of disk 1.
    This way we would have copies as near to the originals as currently possible.

    • Like 6
  3. Thanks for your great work. It is highly appreciated.

    In my opinion these three dumps are bad. Maybe someone can verify this.

     

    Mercenary - The Second City (1985)(Datasoft)(US)

    It reads "Escape from Targ" during boot and then crashes if run in 64k mode. A comparison to the dump of Escape from Targ shows no difference in any non-bad sector.

     

    FileManager 800 (1981)(Synapse Software)(US)

    Keeps crashing for me with different settings of Altirra.

     

    Zaxxon (1983)(Datasoft)(US)

    Keeps crashing for me with different settings of Altirra. The October-torent contained a second dump which works. But this dump is gone in the February-torrent.

  4. As far as I remember Rybag's answer on multiple sectors is correct.

     

    But ;)

    I know of at least one exception: Synfile+

    It has one track with 21 valid sectors.

     

    This is the reason why it can only be copied on a modified Happy 810. The modification uses a potentiometer to reduce the rotational speed of the drive's motor. When it is present and you copy this disk, It is automatically triggered by version 5.2 or 5.3 of the happy software.

    Even the VAPI dumping tool from Atarimania crashed when I tried to image the disk. :mad:

  5. Using FoxyProxy together with Proxy Offline Browser I created my own archive of Atarimania over the last years. Including book download I am currently at 2 GB.

     

    It mirrors only what I have visited and this in a cluttered way, but it is better than nothing. Therefore you shoud at least visit the index pages for the letters once to have valid links to the programs.

     

    You might give it a try.

    • Like 1
  6. Thanks for the post. I OCR'd the manual, however the limit here is 2MB, and the document is 4.5MB. Anyone want to host it? I'm maxed out on my ftp site currently...

    I uploaded the OCRed version (only the manual) to scribd.com. In case someone has the first version, just redownload it with the above link from scribd.com.

     

    thanks Havok69 :thumbsup:

    • Like 1
  7.  

    The FixXL springs to mind immediately, and with a little research I also found "Atari XL To 800 Emulator V2.1 ". I am also pretty sure I once had another program of this kind called "Oldrunner" or the like.

     

    But nowadays, I prefer patched software.

     

     

    Thorsten

    Here are versions 3.0 and 4.0 of "The Emulator".

     

    Advantages to Atari's Translator:

    - OS-400/800 can be booted several times without the need to reload the Emulator

    - BASIC cabe switched on/off during OS-400/800 boot by a keypress

    - The loader of version 4.0 detects an already loaded OS-B and does not load it again from the disk (very quick loading time for the Emulator)

    - IIRC the compatibiltiy is much higher than with Atari's Translator

     

    Important difference between the attached images of version 3.0 and 4.0:

    - The OS of 4.0 needs necessarily an NMI-button (400/800-type reset button) which always nees to be pressed together with the key listed in the menu

     

    There was a version 3.2 which had the 4.0-loader and did not need the NMI-buttton but my disk is no longer readable.

    If someone is less rusted than I am after 25 years then version 3.2 can probably be rebuilt by combining the two versions.

    Emulator 30.zip

    Emulator 40.zip

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