From rnilsson@uni-hamburg.de Sat Jun 11 12:50:37 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!rnilsson
From: rnilsson@uni-hamburg.de (Raj Nilsson)
Newsgroups: comp.sys.m68k
Subject: Observation: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1994Jun11.125037.3607@uni-hamburg.de>
Date: Sat, 11 Jun 1994 12:50:37 GMT
Organization: Universität Hamburg Fachbereich Informatik
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Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14.

This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream.
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?

-- 
Raj Nilsson
Opinions expressed are solely my own and not those of Universität Hamburg Fachbereich Informatik.
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From mcampbell@demon.co.uk Mon Jun 13 03:55:37 1994
Path: ashpoly!cascade!bigsur!demon!mcampbell
From: mcampbell@demon.co.uk (Mei Campbell)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1994Jun13.035537.6806@demon.co.uk>
Date: Mon, 13 Jun 1994 03:55:37 GMT
References: <1994Jun11.125037.3607@uni-hamburg.de>
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In article <1994Jun11.125037.3607@uni-hamburg.de>, rnilsson@uni-hamburg.de (Raj Nilsson) writes:
> Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14.

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

-- 
Mei Campbell | mcampbell@demon.co.uk
PGP Key fingerprint: E153 CD7D 7E1A 3D2E
"Keep the channels open."