From kschneider@stanford.edu Sun Apr 14 04:50:58 1996
Path: ashpoly!cascade!bigsur!stanford!kschneider
From: kschneider@stanford.edu (Katrin Schneider)
Newsgroups: comp.sys.m68k
Subject: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996Apr14.045058.5159@stanford.edu>
Date: Sun, 14 Apr 1996 04:50:58 GMT
Organization: Stanford University Computer Systems Lab
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Hardware disassembly report for Motorola hardware hackers.

Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14.
The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle.

Did Marcus take the decryption EPROM with him when he left the lab?

-- 
Katrin Schneider
Tape trading list upon request. SASE required for international mail.

From dramirez@earthlink.net Sun Apr 14 20:26:58 1996
Path: ashpoly!cascade!transat!ukc!fennimore!earthlink!dramirez
From: dramirez@earthlink.net (Dmitri Ramírez)
Newsgroups: comp.sys.m68k
Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996Apr14.202658.6381@earthlink.net>
Date: Sun, 14 Apr 1996 20:26:58 GMT
References: <1996Apr14.045058.5159@stanford.edu>
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In article <1996Apr14.045058.5159@stanford.edu>, kschneider@stanford.edu (Katrin Schneider) writes:
> Hardware disassembly report for Motorola hardware hackers.

If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack!

-- 
Dmitri Ramírez | dramirez@earthlink.net
PGP Key fingerprint: 7FD2 6C22 BF4A B966
"Keep the channels open."

From dsato@cmu.edu Tue Apr 16 12:46:58 1996
Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!dsato
From: dsato@cmu.edu (Dmitri Sato)
Newsgroups: comp.sys.m68k
Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996Apr16.124658.4710@cmu.edu>
Date: Tue, 16 Apr 1996 12:46:58 GMT
References: <1996Apr14.045058.5159@stanford.edu>
Organization: Carnegie Mellon University School of CS
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In article <1996Apr14.045058.5159@stanford.edu>, kschneider@stanford.edu (Katrin Schneider) writes:
> Hardware disassembly report for Motorola hardware hackers.

If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack!

-- 
Dmitri Sato
Tape trading list upon request. SASE required for international mail.

From dsilva@titech.ac.jp Wed Apr 17 05:41:58 1996
Path: ashpoly!cascade!bigsur!titech!dsilva
From: dsilva@titech.ac.jp (Dong-hyun Silva)
Newsgroups: comp.sys.m68k
Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996Apr17.054158.9555@titech.ac.jp>
Date: Wed, 17 Apr 1996 05:41:58 GMT
References: <1996Apr14.045058.5159@stanford.edu>
Organization: Tokyo Institute of Technology Computer Centre
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In article <1996Apr14.045058.5159@stanford.edu>, kschneider@stanford.edu (Katrin Schneider) writes:
> Hardware disassembly report for Motorola hardware hackers.

Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him.

-- 
=== Dong-hyun Silva ===
Dept of Electrical Engineering, Tokyo Institute of Technology Computer Centre
"Do not worship the copy."