Re: Commodore HSG Layout Disk Copy Protection

From: didier derny <didier_at_aida.org>
Date: Mon, 13 May 2019 21:22:36 +0200
Message-ID: <1cba096d-4406-5414-7ec8-287608a2458d_at_aida.org>
I saw a software, "silicon office", with a copy protection using a 
specific piece of code loaded in the 8050/8250 to read a specific track
I dont remember exactly but they changed something in the format of this 
special track
so if it was not read with their specific routine it failed or if the 
special trackĀ  was altered by a standard copy

the code was quite short and put in place with memory write / memory 
read / memory execute

I guess this system was used by several companies...



On 5/13/2019 3:58 PM, Steve Gray wrote:
> Hi Christian,
>
> I do not know of a way to format only specific tracks. I suppose if 
> you wrote custom code and downloaded into the drive itself you could 
> probably do it, but I have no experience with that.
>
> Steve
>
>
>
> On Sunday, May 12, 2019, 12:06:58 a.m. EDT, vossi <vossi_at_ceffy.de> wrote:
>
>
> Hello,
> I just tried to copy the original 8050 disk with the layout software 1.14
> for the HSG-card.
> Its an 8050 disk called: "Platinenlayout-Software 8050"
>
> I read the disk with zoomfloppy successfully, but track 0-10 are
> unformatted. I wrote the image to a 8050 formatted disk and tried to 
> load in
> my 8032sk.
> The layout-program loads at $0100 and has an autostart. Just after
> autostarting I got the basic start message!
>
> I think the software checks if the first tracks are readable... = copy
> protection
>
> Im able to write only track 11-77 with opencbm, but is there a way to 
> format
> only track 11-77 ?
> If not, I have to try to hack the software ;)
>
> Christian
>
>
>
> -----
> greets
> Christian
> --
> Sent from: http://cbm-hackers.2304266.n4.nabble.com/
>
Received on 2020-05-29 21:20:30

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