10 November 2021, 19:59 | #1 |
Amigaholic
Join Date: Dec 2009
Location: UK
Posts: 4,759
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Striker no 9, what protection?
Have a copy of the budget release of Striker no 9 (impressions/energize) and it looks like there are 2 long tracks on both sides of track 0, HxC shows them as 102764 bitcells, so is this the protection?
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10 November 2021, 22:57 | #2 |
CaptainM68K-SPS France
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Good question do you have a dump handy ? I will confirm that to you
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11 November 2021, 14:19 | #3 |
Amigaholic
Join Date: Dec 2009
Location: UK
Posts: 4,759
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12 November 2021, 05:28 | #4 |
CaptainM68K-SPS France
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After having a look, it appears that only track 0 is duplicated. All tracks from 01 to 79 are seen as written on an Amiga.
We need an amiga coder to check if the track 0 is used as a copy protection. I have no indication that it is at the moment. |
12 November 2021, 09:38 | #5 |
Defendit numerus
Join Date: Mar 2017
Location: Crossing the Rubicon
Age: 54
Posts: 4,488
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If you put it into the Zone tonight i look at it
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12 November 2021, 10:33 | #6 |
CaptainM68K-SPS France
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ok, Ross, once back home this evening, i will up the file.
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12 November 2021, 17:55 | #7 |
Amigaholic
Join Date: Dec 2009
Location: UK
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Doesn't look like it was written on an Amiga?
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12 November 2021, 20:49 | #8 |
Defendit numerus
Join Date: Mar 2017
Location: Crossing the Rubicon
Age: 54
Posts: 4,488
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Visually cylinder 0 seems with short cells (considering the normal 11 sectors, so long track).
But no idea if some protection based on 'distance' from index is used, only code inspection could say it. Interesting that lower track 0 'end early' and the upper one 'starts late'. |
12 November 2021, 21:29 | #9 |
Amigaholic
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I've uploaded a CT RAW of my dump to The Zone, Denis will probably upload a proper IPF as well!
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12 November 2021, 23:00 | #10 |
Defendit numerus
Join Date: Mar 2017
Location: Crossing the Rubicon
Age: 54
Posts: 4,488
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There seems to be no protection.
Likely it was the replication-machine that by default used short cells on the first cylinder. |
13 November 2021, 00:32 | #11 |
Amigaholic
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Location: UK
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I was going by the cracks in TOSEC that seem to imply it's protected, but now that could be only the retail release is protected, not the budget release I have. So going by your analysis it does appear the budget release isn't protected!
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13 November 2021, 09:35 | #12 |
CaptainM68K-SPS France
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13 November 2021, 11:53 | #13 |
Amigaholic
Join Date: Dec 2009
Location: UK
Posts: 4,759
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I've seen official IPF's that look similar in HxC though, some tracks not fully index aligned, but those can't have been modified or they won't be in IPF!
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