From gkang@utexas.edu Thu Nov 03 14:21:06 1994
Path: ashpoly!cascade!transat!ukc!fennimore!utexas!gkang
From: gkang@utexas.edu (Göran Kang)
Newsgroups: comp.sys.m68k
Subject: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1994Nov03.142106.6927@utexas.edu>
Date: Thu, 03 Nov 1994 14:21:06 GMT
Organization: University of Texas at Austin
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Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.

Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14.
Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF.

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

-- 
=== Göran Kang ===
Dept of Electrical Engineering, University of Texas at Austin
"Do not worship the copy."

From afischer@cern.ch Sat Nov 05 06:43:06 1994
Path: ashpoly!cascade!transat!sunet!nordrelay!cern!afischer
From: afischer@cern.ch (Andrei Fischer)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1994Nov05.064306.3714@cern.ch>
Date: Sat, 05 Nov 1994 06:43:06 GMT
References: <1994Nov03.142106.6927@utexas.edu>
Organization: European Laboratory for Particle Physics, Geneva
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In article <1994Nov03.142106.6927@utexas.edu>, gkang@utexas.edu (Göran Kang) writes:
> Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.

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

-- 
Andrei Fischer -- European Laboratory for Particle Physics, Geneva
"Do not worship the copy."

From jkowalski@utexas.edu Sun Nov 06 10:47:06 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!jkowalski
From: jkowalski@utexas.edu (Julien Kowalski)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1994Nov06.104706.2667@utexas.edu>
Date: Sun, 06 Nov 1994 10:47:06 GMT
References: <1994Nov03.142106.6927@utexas.edu>
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In article <1994Nov03.142106.6927@utexas.edu>, gkang@utexas.edu (Göran Kang) writes:
> Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.

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

-- 
Julien Kowalski
Opinions expressed are solely my own and not those of University of Texas at Austin.
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From fkuznetsov@ox.ac.uk Mon Nov 07 22:49:06 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!ox!fkuznetsov
From: fkuznetsov@ox.ac.uk (Fiona Kuznetsov)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1994Nov07.224906.9957@ox.ac.uk>
Date: Mon, 07 Nov 1994 22:49:06 GMT
References: <1994Nov03.142106.6927@utexas.edu>
Organization: Oxford University Computing Laboratory
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In article <1994Nov03.142106.6927@utexas.edu>, gkang@utexas.edu (Göran Kang) writes:
> Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.
> Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14.

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

-- 
Fiona Kuznetsov
Opinions expressed are solely my own and not those of Oxford University Computing Laboratory.
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