From olarsson@earthlink.net Fri Apr 22 00:45:58 1994
Path: ashpoly!cascade!brgate!saturno!earthlink!olarsson
From: olarsson@earthlink.net (Olga Larsson)
Newsgroups: comp.sys.m68k
Subject: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1994Apr22.004558.1360@earthlink.net>
Date: Fri, 22 Apr 1994 00:45:58 GMT
Organization: EarthLink Network
NNTP-Posting-Host: earthlink.net
X-Newsreader: TIN [version 1.2 PL2]
Lines: 11

Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.

CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit.
The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank.

Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc.

-- 
=== Olga Larsson ===
Dept of Electrical Engineering, EarthLink Network
"Row 14. No joke."

From kgarcia@rwth-aachen.de Sat Apr 23 05:15:58 1994
Path: ashpoly!cascade!transat!eunet-fr!teletel!rwth-aachen!kgarcia
From: kgarcia@rwth-aachen.de (Karen García)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1994Apr23.051558.7021@rwth-aachen.de>
Date: Sat, 23 Apr 1994 05:15:58 GMT
References: <1994Apr22.004558.1360@earthlink.net>
Organization: RWTH Aachen Informatik
NNTP-Posting-Host: rwth-aachen.de
X-Newsreader: NewsWatcher 2.0b24
Lines: 8

In article <1994Apr22.004558.1360@earthlink.net>, olarsson@earthlink.net (Olga Larsson) writes:
> Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.

The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space.

-- 
Karen García -- RWTH Aachen Informatik
"We don't sign stars. We build them."