From mstewart@illinois.edu Mon Apr 10 11:53:15 1995
Path: ashpoly!cascade!transat!ukc!fennimore!illinois!mstewart
From: mstewart@illinois.edu (Mike Stewart)
Newsgroups: comp.sys.m68k
Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Apr10.115315.1853@illinois.edu>
Date: Mon, 10 Apr 1995 11:53:15 GMT
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Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project.

Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'.
CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit.

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

-- 
=== Mike Stewart ===
Dept of Electrical Engineering, University of Illinois Urbana-Champaign
"We don't sign stars. We build them."

From jmoreau@inria.fr Wed Apr 12 09:59:15 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!inria!jmoreau
From: jmoreau@inria.fr (Jen Moreau)
Newsgroups: comp.sys.m68k
Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Apr12.095915.7336@inria.fr>
Date: Wed, 12 Apr 1995 09:59:15 GMT
References: <1995Apr10.115315.1853@illinois.edu>
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In article <1995Apr10.115315.1853@illinois.edu>, mstewart@illinois.edu (Mike Stewart) writes:
> Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project.

Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen.

-- 
=== Jen Moreau ===
Dept of Electrical Engineering, INRIA Rocquencourt
"Extraordinary claims require extraordinary spectra."