From nfournier@cern.ch Thu Jan 12 21:28:49 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!cern!nfournier From: nfournier@cern.ch (Nadia Fournier) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan12.212849.7928@cern.ch> Date: Thu, 12 Jan 1995 21:28:49 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 10 Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Nadia Fournier Tape trading list upon request. SASE required for international mail. From akang@uu.net Sat Jan 14 12:26:49 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!akang From: akang@uu.net (Andrei Kang) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan14.122649.7985@uu.net> Date: Sat, 14 Jan 1995 12:26:49 GMT References: <1995Jan12.212849.7928@cern.ch> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jan12.212849.7928@cern.ch>, nfournier@cern.ch (Nadia Fournier) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. Tom from Ashford Poly owns the physical board! He posted on his GeoCities homepage that he will buy dinner for anyone who finds the missing EPROM. -- Andrei Kang "There are 14 nodes and only 10 countries. Count again." PC-9821Ap2 (NEC) / AmigaOS 3.1 From crobertson@stanford.edu Sun Jan 15 04:13:49 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!stanford!crobertson From: crobertson@stanford.edu (Callum Robertson) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan15.041349.9489@stanford.edu> Date: Sun, 15 Jan 1995 04:13:49 GMT References: <1995Jan12.212849.7928@cern.ch> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jan12.212849.7928@cern.ch>, nfournier@cern.ch (Nadia Fournier) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Callum Robertson Practical Peripherals 14.4 @ 9600 Telebit bps "The hatch is open. Is anyone listening?" From mhernandez@panix.com Mon Jan 16 15:01:49 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!panix!mhernandez From: mhernandez@panix.com (Mathieu Hernández) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan16.150149.7093@panix.com> Date: Mon, 16 Jan 1995 15:01:49 GMT References: <1995Jan12.212849.7928@cern.ch> <1995Jan15.041349.9489@stanford.edu> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Jan15.041349.9489@stanford.edu>, crobertson@stanford.edu (Callum Robertson) writes: > Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. Looks like a prototype telecommunications board for military secure voice, not an audio music product. -- Mathieu Hernández Tape trading list upon request. SASE required for international mail.