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Post subject: WIP: MAME WIP Sega MC8123 Decryption
 Posted: Mar 15, 2007 - 11:10 AM
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Ex-Member
Joined: Feb 28, 2005
Posts: 3561
Location: überall und nirgends
Highscores in 06/2013
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Bei R. Belmont steht zu lesen, dass Nicola Salmoria wieder mal ein Kunststück gelungen ist: die Entschlüsselung der Sega MC8123 CPU.
Diese ist für Spiele wie Fantasy Zone 2 und Opa Opa auf dem Sega System E verantwortlich, dessen Spiele ja bekanntlich mittlerweile aufgrund des Alters stark von Batterieproblemen und dem daraus resultierenden Verlust des Encryption-Schlüssels bedroht sind.
EDIT:
..mehr Infos bei Haze:
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March 15th, 2007 - Easy as ( 123
Nicola found a weakness in the way Sega generated their keys for the M8123 which made decrypting Fantasy Zone 2 and Opa Opa much easier than anybody had expected. Both games (running on the System E arcade platform) work fine with the SMS emulation from HazeMD. I need to port this over to MAME so that they work properly in MAME too. Aaron should be thanked too for noticing that the FD1094 keys were generated by a Psuedo-Random number generator rather than actually being Random, this was also found to apply to the MC8123 and was the basis of Nicola’s work.
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...und Guru hat bereits seine Dump-Liste für Sega-Security-Parts geupdated. |
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Last edited by Falcone on Mar 16, 2007 - 11:20 AM; edited 4 times in total
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retroK
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Post subject: RE: MAME WIP Sega MC8123 Decryption
Posted: Mar 15, 2007 - 11:11 AM
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Site Admin
Joined: Jul 04, 2004
Posts: 9359
Location: Frankfurt a.M.
Highscores in 06/2013
Status: Offline
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Hi Falcone, danke für die News.
Bitte benutzte statt BBCode HTML beim Schreiben der News. Die Umwandlung in BBCode wird hier automatisch vorgenommen. |
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Post subject: RE: MAME WIP Sega MC8123 Decryption
Posted: Mar 15, 2007 - 11:58 AM
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Ex-Member
Joined: Feb 28, 2005
Posts: 3561
Location: überall und nirgends
Highscores in 06/2013
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| Also <a href=""> statt [url]? |
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XTale
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Post subject: RE: MAME WIP Sega MC8123 Decryption
Posted: Mar 15, 2007 - 12:23 PM
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Site Admin
Joined: Jul 04, 2004
Posts: 1853
Location: Dillingen / Saar
Highscores in 06/2013
Status: Offline
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