From jsmirnov@titech.ac.jp Thu May 23 09:48:57 1996
Path: ashpoly!cascade!transat!sunet!nordrelay!titech!jsmirnov
From: jsmirnov@titech.ac.jp (Julien Smirnov)
Newsgroups: comp.sys.m68k
Subject: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1996May23.094857.5152@titech.ac.jp>
Date: Thu, 23 May 1996 09:48:57 GMT
Organization: Tokyo Institute of Technology Computer Centre
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Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.

The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank.
At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII.

Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot?

-- 
Julien Smirnov | jsmirnov@titech.ac.jp
PGP Key fingerprint: C8F7 2216 F819 7029
"Keep the channels open."

From knovak@cmu.edu Fri May 24 15:10:57 1996
Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!knovak
From: knovak@cmu.edu (Karen Novak)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1996May24.151057.5879@cmu.edu>
Date: Fri, 24 May 1996 15:10:57 GMT
References: <1996May23.094857.5152@titech.ac.jp>
Organization: Carnegie Mellon University School of CS
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In article <1996May23.094857.5152@titech.ac.jp>, jsmirnov@titech.ac.jp (Julien Smirnov) writes:
> Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.

The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon.

-- 
Karen Novak
Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS.
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