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First post, by coolhaken

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Hi all,

I dumped an old BASICA game from a floppy with heavily mold.
After several times of try, there were still 4 bytes corrupt (2EE7~2EEA).
I dumped 5 times and compared every copy, then upload the best one.
Also, this BASICA program is in protected format.
Anyone can help me to recover this program or give me some suggestion ?
Thanks a lot !

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  • Filename
    21POINT.7z
    File size
    13.8 KiB
    Downloads
    60 downloads
    File license
    Fair use/fair dealing exception

Reply 1 of 3, by Jorpho

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Since it's only four bytes, my first inclination would be to find some means of somehow iterating through all combinations until the correct values are found.

But searching for <basica protected> suggests there are other means of unprotecting a BASICA program.
http://www.chebucto.ns.ca/~af380/GW-BASIC-tokens.html#pgwbp

Something called UNPBAS11 also comes up.

Reply 2 of 3, by ZanQuance

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Let me fix that for you:

Here you go
[edit]Changed it to ascii mode instead of unprotected program binary mode

Attachments

  • Filename
    21POINT.zip
    File size
    5.21 KiB
    Downloads
    65 downloads
    File comment
    Source Code
    File license
    Fair use/fair dealing exception