Author Topic: Unprotecting Programs  (Read 8084 times)

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Offline CECPC

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Re: Unprotecting Programs
« Reply #25 on: 19:19, 26 August 15 »
Thank you very much.

I consider simple algorithms like this, but there is some garbage in 0x40-0x80 position (data begins 0x80-) and I was assuming on debugging, that data begins on 0x40. This garbage misled me.

So, a very simple algorithm. I hope this "garbage" (like at the end) is really garbage and I could omit even if I write another different data to the DSK image again.
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Offline CECPC

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Re: Unprotecting Programs
« Reply #26 on: 19:49, 26 August 15 »
It's no garbage, but part of the AMSDOS Header...

But the read could be made OK.

Mission accomplished  8) . On next version of CDTMaster, Protected BASIC will be copied OK from DSK to CDT (on tapes, Protected Basic is not masked).
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Offline AMSDOS

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Re: Unprotecting Programs
« Reply #27 on: 22:49, 27 August 15 »
There was a RSX Library called Ten-Bars from AA56, which had 2 RSXes for Encoding or Decoding Data.
The user would enter a code number to Encode/Decode - along with the start/end address.
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Offline Gryzor

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Re: Unprotecting Programs
« Reply #28 on: 20:46, 29 August 15 »
Thread resurrection FTW!


Ah, good thing too since Sourceforge didn't list any changes for the new CDTMaster version...
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