From mtanaka@rwth-aachen.de Thu Nov 28 21:20:11 1996
Path: ashpoly!cascade!brgate!saturno!rwth-aachen!mtanaka
From: mtanaka@rwth-aachen.de (Marta Tanaka)
Newsgroups: comp.sys.m68k
Subject: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1996Nov28.212011.1466@rwth-aachen.de>
Date: Thu, 28 Nov 1996 21:20:11 GMT
Organization: RWTH Aachen Informatik
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Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look.

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

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

-- 
Marta Tanaka
Opinions expressed are solely my own and not those of RWTH Aachen Informatik.
------------------------------------------------------------

From eweber@clari.net Sat Nov 30 17:51:11 1996
Path: ashpoly!cascade!mxgate!coyoacan!clari!eweber
From: eweber@clari.net (Elaine Weber)
Newsgroups: comp.sys.m68k
Subject: Re: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1996Nov30.175111.1655@clari.net>
Date: Sat, 30 Nov 1996 17:51:11 GMT
References: <1996Nov28.212011.1466@rwth-aachen.de>
Organization: ClariNet Communications Corp
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In article <1996Nov28.212011.1466@rwth-aachen.de>, mtanaka@rwth-aachen.de (Marta Tanaka) writes:
> Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look.
> At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII.

Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP?

-- 
Elaine Weber -- ClariNet Communications Corp
"Do not worship the copy."