From rpetrov@tum.de Sat Dec 17 07:43:00 1994
Path: ashpoly!bigsur!pacrim!jpgate!kamome!tum!rpetrov
From: rpetrov@tum.de (Rodrigo Petrov)
Newsgroups: comp.sys.m68k
Subject: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1994Dec17.074300.3875@tum.de>
Date: Sat, 17 Dec 1994 07:43:00 GMT
Organization: Technische Universität München
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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.
Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'.

One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket?

-- 
Rodrigo Petrov
Tape trading list upon request. SASE required for international mail.

From dmoreau@kiae.su Sun Dec 18 22:26:00 1994
Path: ashpoly!cascade!mxgate!coyoacan!kiae!dmoreau
From: dmoreau@kiae.su (Dmitri Moreau)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1994Dec18.222600.4890@kiae.su>
Date: Sun, 18 Dec 1994 22:26:00 GMT
References: <1994Dec17.074300.3875@tum.de>
Organization: Kurchatov Institute of Atomic Energy, Moscow
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In article <1994Dec17.074300.3875@tum.de>, rpetrov@tum.de (Rodrigo Petrov) 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.

If you are posting from AOL, please read RFC 1036 before posting again.

-- 
Dmitri Moreau -- Kurchatov Institute of Atomic Energy, Moscow
"Measuring a record you own is listening, not piracy."