From erodriguez@clari.net Sun Oct 15 12:14:21 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!clari!erodriguez
From: erodriguez@clari.net (Elaine Rodríguez)
Newsgroups: comp.sys.m68k
Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Oct15.121421.8423@clari.net>
Date: Sun, 15 Oct 1995 12:14:21 GMT
Organization: ClariNet Communications Corp
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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'.
The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank.

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

-- 
Elaine Rodríguez -- ClariNet Communications Corp
"We don't sign stars. We build them."

From bnilsson@mit.edu Tue Oct 17 09:33:21 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mit!bnilsson
From: bnilsson@mit.edu (Bruno Nilsson)
Newsgroups: comp.sys.m68k
Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Oct17.093321.9508@mit.edu>
Date: Tue, 17 Oct 1995 09:33:21 GMT
References: <1995Oct15.121421.8423@clari.net>
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In article <1995Oct15.121421.8423@clari.net>, erodriguez@clari.net (Elaine Rodríguez) writes:
> 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'.

Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire).

-- 
Bruno Nilsson
Tape trading list upon request. SASE required for international mail.

From enilsson@titech.ac.jp Thu Oct 19 01:45:21 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!titech!enilsson
From: enilsson@titech.ac.jp (Emi Nilsson)
Newsgroups: comp.sys.m68k
Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Oct19.014521.3484@titech.ac.jp>
Date: Thu, 19 Oct 1995 01:45:21 GMT
References: <1995Oct15.121421.8423@clari.net> <1995Oct17.093321.9508@mit.edu>
Organization: Tokyo Institute of Technology Computer Centre
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In article <1995Oct17.093321.9508@mit.edu>, bnilsson@mit.edu (Bruno Nilsson) writes:
> Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire).

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

PGP Public key available via finger or upon request.

-- 
Emi Nilsson -- Tokyo Institute of Technology Computer Centre
"5 sigma is a discovery. 7 is a question."

From cgarcia@purdue.edu Thu Oct 19 20:54:21 1995
Path: ashpoly!cascade!mxgate!coyoacan!purdue!cgarcia
From: cgarcia@purdue.edu (Callum García)
Newsgroups: comp.sys.m68k
Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1995Oct19.205421.1175@purdue.edu>
Date: Thu, 19 Oct 1995 20:54:21 GMT
References: <1995Oct15.121421.8423@clari.net> <1995Oct17.093321.9508@mit.edu>
Organization: Purdue University Engineering Computer Network
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In article <1995Oct17.093321.9508@mit.edu>, bnilsson@mit.edu (Bruno Nilsson) writes:
> Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire).

The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon.

Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin!

-- 
Callum García
Tape trading list upon request. SASE required for international mail.