From rramirez@purdue.edu Wed May 03 16:03:34 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!purdue!rramirez
From: rramirez@purdue.edu (Rodrigo Ramírez)
Newsgroups: comp.sys.m68k
Subject: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995May03.160334.4957@purdue.edu>
Date: Wed, 03 May 1995 16:03:34 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.

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

-- 
Rodrigo Ramírez
Tape trading list upon request. SASE required for international mail.

From jgirard@unam.mx Fri May 05 19:06:34 1995
Path: ashpoly!cascade!transat!ukc!fennimore!unam!jgirard
From: jgirard@unam.mx (Jen Girard)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995May05.190634.6798@unam.mx>
Date: Fri, 05 May 1995 19:06:34 GMT
References: <1995May03.160334.4957@purdue.edu>
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In article <1995May03.160334.4957@purdue.edu>, rramirez@purdue.edu (Rodrigo Ramírez) writes:
> Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project.

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

-- 
Jen Girard | jgirard@unam.mx
PGP Key fingerprint: FF78 680B 64B6 3431
"Keep the channels open."