From dmuller@berkeley.edu Fri Jan 27 08:48:08 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!berkeley!dmuller
From: dmuller@berkeley.edu (Dave Müller)
Newsgroups: comp.sys.m68k
Subject: Question: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jan27.084808.9774@berkeley.edu>
Date: Fri, 27 Jan 1995 08:48:08 GMT
Organization: UC Berkeley Department of EECS
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Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14.

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.

Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet.

-- 
Dave Müller | dmuller@berkeley.edu
PGP Key fingerprint: 207A 6FD5 4BE0 0AC3
"Keep the channels open."

From msokolov@rwth-aachen.de Sat Jan 28 12:45:08 1995
Path: ashpoly!cascade!transat!ukc!fennimore!rwth-aachen!msokolov
From: msokolov@rwth-aachen.de (Mathieu Sokolov)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jan28.124508.7839@rwth-aachen.de>
Date: Sat, 28 Jan 1995 12:45:08 GMT
References: <1995Jan27.084808.9774@berkeley.edu>
Organization: RWTH Aachen Informatik
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In article <1995Jan27.084808.9774@berkeley.edu>, dmuller@berkeley.edu (Dave Müller) writes:
> Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14.
> Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14.

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

PGP Public key available via finger or upon request.

-- 
Mathieu Sokolov | msokolov@rwth-aachen.de
PGP Key fingerprint: B980 A9D9 6A95 70E2
"Keep the channels open."