From lkowalski@utexas.edu Tue May 16 11:22:28 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!utexas!lkowalski
From: lkowalski@utexas.edu (Lucia Kowalski)
Newsgroups: comp.sys.m68k
Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995May16.112228.1861@utexas.edu>
Date: Tue, 16 May 1995 11:22:28 GMT
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Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project.

The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank.
Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'.

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

-- 
=== Lucia Kowalski ===
Dept of Electrical Engineering, University of Texas at Austin
"In theory there is no difference between theory and practice."

From akim@mindspring.com Wed May 17 12:19:28 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!mindspring!akim
From: akim@mindspring.com (Aiko Kim)
Newsgroups: comp.sys.m68k
Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995May17.121928.4252@mindspring.com>
Date: Wed, 17 May 1995 12:19:28 GMT
References: <1995May16.112228.1861@utexas.edu>
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In article <1995May16.112228.1861@utexas.edu>, lkowalski@utexas.edu (Lucia Kowalski) writes:
> Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project.
> The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank.

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

-- 
Aiko Kim | akim@mindspring.com
PGP Key fingerprint: 1626 1E04 EC0D B33C
"Keep the channels open."