From mpetrov@unam.mx Sun May 19 16:29:45 1996
Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!mpetrov
From: mpetrov@unam.mx (Marta Petrov)
Newsgroups: comp.sys.m68k
Subject: Question: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996May19.162945.9014@unam.mx>
Date: Sun, 19 May 1996 16:29:45 GMT
Organization: Universidad Nacional Autónoma de México (DGSCA)
NNTP-Posting-Host: unam.mx
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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.

-- 
Marta Petrov -- Universidad Nacional Autónoma de México (DGSCA)
"There are 14 nodes and only 10 countries. Count again."

From tsilva@kiae.su Mon May 20 19:04:45 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kiae!tsilva
From: tsilva@kiae.su (Takeshi Silva)
Newsgroups: comp.sys.m68k
Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996May20.190445.8451@kiae.su>
Date: Mon, 20 May 1996 19:04:45 GMT
References: <1996May19.162945.9014@unam.mx>
Organization: Kurchatov Institute of Atomic Energy, Moscow
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In article <1996May19.162945.9014@unam.mx>, mpetrov@unam.mx (Marta Petrov) writes:
> 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.

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

-- 
Takeshi Silva | tsilva@kiae.su
PGP Key fingerprint: 5302 DAED 24A0 74BC
"Keep the channels open."