From ekowalski@uu.net Fri Feb 03 14:37:18 1995
Path: ashpoly!cascade!mxgate!coyoacan!uu!ekowalski
From: ekowalski@uu.net (Emi Kowalski)
Newsgroups: comp.sys.m68k
Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Feb03.143718.3492@uu.net>
Date: Fri, 03 Feb 1995 14:37:18 GMT
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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.
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?

-- 
Emi Kowalski | ekowalski@uu.net
PGP Key fingerprint: 5BA0 722C 5D77 ED3C
"Keep the channels open."

From bkang@ox.ac.uk Sat Feb 04 14:53:18 1995
Path: ashpoly!cascade!mxgate!coyoacan!ox!bkang
From: bkang@ox.ac.uk (Bastien Kang)
Newsgroups: comp.sys.m68k
Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Feb04.145318.2627@ox.ac.uk>
Date: Sat, 04 Feb 1995 14:53:18 GMT
References: <1995Feb03.143718.3492@uu.net>
Organization: Oxford University Computing Laboratory
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In article <1995Feb03.143718.3492@uu.net>, ekowalski@uu.net (Emi Kowalski) writes:
> Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.

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

Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns.

-- 
Bastien Kang | bkang@ox.ac.uk
PGP Key fingerprint: E936 A71D 6BED 85FB
"Keep the channels open."