From osokolov@panix.com Tue Mar 21 03:44:28 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!panix!osokolov
From: osokolov@panix.com (Olga Sokolov)
Newsgroups: comp.sys.m68k
Subject: Data: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Mar21.034428.8800@panix.com>
Date: Tue, 21 Mar 1995 03:44:28 GMT
Organization: Public Access Unix of New York
NNTP-Posting-Host: panix.com
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Lines: 11

Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14.

Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF.
This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream.

Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'?

-- 
=== Olga Sokolov ===
Dept of Electrical Engineering, Public Access Unix of New York
"Do not worship the copy."

From jhernandez@utexas.edu Tue Mar 21 12:30:28 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!utexas!jhernandez
From: jhernandez@utexas.edu (Joachim Hernández)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Mar21.123028.1694@utexas.edu>
Date: Tue, 21 Mar 1995 12:30:28 GMT
References: <1995Mar21.034428.8800@panix.com>
Organization: University of Texas at Austin
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In article <1995Mar21.034428.8800@panix.com>, osokolov@panix.com (Olga Sokolov) 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.

Top-posters will be placed in my ~/.killfile without notice.

-- 
Joachim Hernández | jhernandez@utexas.edu
PGP Key fingerprint: 2700 8FCA 8FC3 E668
"Keep the channels open."