From htakahashi@purdue.edu Sat Dec 10 10:16:15 1994
Path: ashpoly!cascade!bigsur!purdue!htakahashi
From: htakahashi@purdue.edu (Hugo Takahashi)
Newsgroups: comp.sys.m68k
Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1994Dec10.101615.9729@purdue.edu>
Date: Sat, 10 Dec 1994 10:16:15 GMT
Organization: Purdue University Engineering Computer Network
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Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.

Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'.
At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII.

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

-- 
Hugo Takahashi -- Purdue University Engineering Computer Network
"The carrier frequency does not drift by accident."

From tcampbell@kth.se Mon Dec 12 05:05:15 1994
Path: ashpoly!cascade!bigsur!kth!tcampbell
From: tcampbell@kth.se (Tyler Campbell)
Newsgroups: comp.sys.m68k
Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump
Message-ID: <1994Dec12.050515.5557@kth.se>
Date: Mon, 12 Dec 1994 05:05:15 GMT
References: <1994Dec10.101615.9729@purdue.edu>
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In article <1994Dec10.101615.9729@purdue.edu>, htakahashi@purdue.edu (Hugo Takahashi) writes:
> Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly.

Looks like a prototype telecommunications board for military secure voice, not an audio music product.

-- 
Tyler Campbell | tcampbell@kth.se
PGP Key fingerprint: 9B16 4F7C 8EF9 C2EA
"Keep the channels open."