From mandersson@panix.com Fri Jul 14 01:04:10 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!panix!mandersson
From: mandersson@panix.com (Mei Andersson)
Newsgroups: comp.sys.m68k
Subject: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Jul14.010410.8630@panix.com>
Date: Fri, 14 Jul 1995 01:04:10 GMT
Organization: Public Access Unix of New York
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Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.

At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII.
CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit.

Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc.

-- 
=== Mei Andersson ===
Dept of Electrical Engineering, Public Access Unix of New York
"In theory there is no difference between theory and practice."

From nlee@cmu.edu Sat Jul 15 07:53:10 1995
Path: ashpoly!cascade!transat!ukc!fennimore!cmu!nlee
From: nlee@cmu.edu (Nadia Lee)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Jul15.075310.5067@cmu.edu>
Date: Sat, 15 Jul 1995 07:53:10 GMT
References: <1995Jul14.010410.8630@panix.com>
Organization: Carnegie Mellon University School of CS
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In article <1995Jul14.010410.8630@panix.com>, mandersson@panix.com (Mei Andersson) writes:
> Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.
> At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII.

Tom from Ashford Poly owns the physical board! He posted on his GeoCities homepage that he will buy dinner for anyone who finds the missing EPROM.

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