'Software Toolworks protection--Black Hol'
Author:J Achernar (registered user: 36 posts )
Date: Mon, Mar 28th, 2011 @ 21:58 ( . )

Very curious. Comparing the two images, they are identical except for two differences. Your copy does not have any signiture bytes at all it the tail gap of sector 16. Also, in track 19, sector 2, byte 60, an A0 has been replaced with a 60, i.e. an LDY #$21 has been replaced with an RTS. This happens to be the first sector of "BH2" which has a load address of 1406.

Your copy runs in VICE as a D64 file. It looks like the copy protection has been completely disabled.


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'Software Toolworks protection--Black Hol'
Author:Pete Rittwage (registered user: 558 posts )
Date: Tue, Mar 29th, 2011 @ 08:19 ( . )

Interesting. I'll need to check my original again- It's possible that someone ran a parameter on it sometime in the past, or else they had a mastering run without the protection.

The latter is doubtful, so I'll correct the database.


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'Software Toolworks protection--Black Hol'
Author:bluebirdpod (registered user: 28 posts )
Date: Tue, Mar 29th, 2011 @ 09:15 ( . )

I think Dark Castle is the same way, as it has weak bit protection signature checks, and I think GB05 has DCastle as .D64's which must have had a parameter run on both sides, I will confirm this, I have several Originals of Dark Castle.


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