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IDENTIFICATION SERVEUR : 10.14.20.190 - CLIENT : 3.237.205.144 |
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toinet Site Admin
Inscrit le: 15 Juin 2007 Messages: 3062 Localisation: Le Chesnay, France
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Posté le: Mer 02 Aoû 2017, 5:14 Sujet du message: The human fly (CPU, 1982) |
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#932 - By Computer Programs Unlimited. Are you a window cleaner or a human fly? Try it by yourself...
Disk structure
This is a NON standard DOS 3.3 disk.
Locksmith Fast Disk Backup shows no standard DOS 3.3 sectors.
The nibble editor of Copy II Plus shows no extra track.
The volume number is 254.
Protection type
1. There is a change of markers, in the epilog markers of the address and data fields. The values are:
Code: |
Address field: D5AA96 FFFFFF instead of DEAAEB
Data field: D5AAAD FFFFFF instead of DEAAEB
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2. There is a nibble check at boot time at address $BB00. That loops if markers are not found.
3. The sync markers have been changed:
Code: |
Address field: FE instead of FF
Data field: AB instead of FF
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How to copy
Boot my copy disk, launch Advanced Demuffin 1.4 and
Code: |
Insert The Human Fly in drive 1
Press B to boot and capture the original RWTS
Insert a blank disk in drive 2
Copy the entire disk
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How to normalize
Boot my copy disk, launch Disk Fixer 4 and
Code: |
T0/S2/9E: FF -> DE
T0/S2/A3: FF -> AA
T0/S2/A8: FF -> EB
T0/S3/35: FF -> DE
T0/S3/3F: FF -> AA
T0/S3/91: FF -> DE
T0/S3/9B: FF -> AA
T0/S5/FF: BB -> B7
Even if there are no writes, it is safer to normalize the write routines:
T0/S2/3E: AB -> FF
T0/S2/4B: AB -> FF
T0/S6/60: FE -> FF
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There are remains of code that changes the markers at $BA69 and after but those are not called.
The disk image is available at http://www.brutaldeluxe.fr/crack/
Reboot and... enjoy,
LoGo
8/2017 |
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