From nperez@netcom.com Sun Apr 16 13:19:06 1995
Path: ashpoly!cascade!brgate!saturno!netcom!nperez
From: nperez@netcom.com (Nadia Pérez)
Newsgroups: comp.sys.m68k
Subject: [INFO] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Apr16.131906.4655@netcom.com>
Date: Sun, 16 Apr 1995 13:19:06 GMT
Organization: NETCOM On-Line Communication Services
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Hardware disassembly report for Motorola hardware hackers.

Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF.
The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle.

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

-- 
Nadia Pérez
Tape trading list upon request. SASE required for international mail.

From asouza@cern.ch Mon Apr 17 14:34:06 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!cern!asouza
From: asouza@cern.ch (Astrid Souza)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Apr17.143406.6771@cern.ch>
Date: Mon, 17 Apr 1995 14:34:06 GMT
References: <1995Apr16.131906.4655@netcom.com>
Organization: European Laboratory for Particle Physics, Geneva
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In article <1995Apr16.131906.4655@netcom.com>, nperez@netcom.com (Nadia Pérez) 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.

-- 
Astrid Souza
Tape trading list upon request. SASE required for international mail.