From ichoi@pipeline.com Thu Oct 26 04:50:19 1995 Path: ashpoly!cascade!transat!ukc!fennimore!pipeline!ichoi From: ichoi@pipeline.com (Ines Choi) Newsgroups: comp.sys.m68k Subject: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct26.045019.6153@pipeline.com> Date: Thu, 26 Oct 1995 04:50:19 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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? -- Ines Choi SupraFAXModem 28.8 @ 28,800 bps "We don't sign stars. We build them." From seriksson@utexas.edu Fri Oct 27 22:15:19 1995 Path: ashpoly!cascade!brgate!saturno!utexas!seriksson From: seriksson@utexas.edu (Sergei Eriksson) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct27.221519.7070@utexas.edu> Date: Fri, 27 Oct 1995 22:15:19 GMT References: <1995Oct26.045019.6153@pipeline.com> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 12 In article <1995Oct26.045019.6153@pipeline.com>, ichoi@pipeline.com (Ines Choi) writes: > 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. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Sergei Eriksson | seriksson@utexas.edu PGP Key fingerprint: A79B 8028 9702 9FC5 "Keep the channels open." From hokonkwo@kth.se Sat Oct 28 12:56:19 1995 Path: ashpoly!cascade!bigsur!kth!hokonkwo From: hokonkwo@kth.se (Heather Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct28.125619.5346@kth.se> Date: Sat, 28 Oct 1995 12:56:19 GMT References: <1995Oct26.045019.6153@pipeline.com> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Oct26.045019.6153@pipeline.com>, ichoi@pipeline.com (Ines Choi) writes: > 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. 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. -- Heather Okonkwo | hokonkwo@kth.se PGP Key fingerprint: 2B5B 5C90 E3F0 2489 "Keep the channels open." From aoliveira@titech.ac.jp Sat Oct 28 15:51:19 1995 Path: ashpoly!cascade!mxgate!coyoacan!titech!aoliveira From: aoliveira@titech.ac.jp (Amy Oliveira) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct28.155119.6116@titech.ac.jp> Date: Sat, 28 Oct 1995 15:51:19 GMT References: <1995Oct26.045019.6153@pipeline.com> <1995Oct27.221519.7070@utexas.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Oct27.221519.7070@utexas.edu>, seriksson@utexas.edu (Sergei Eriksson) writes: > Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). > My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Amy Oliveira US Robotics Courier V.34 @ 28,800 bps "Do not worship the copy." From ysuzuki@pacbell.net Mon Oct 30 16:27:19 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!ysuzuki From: ysuzuki@pacbell.net (Yuki Suzuki) Newsgroups: comp.sys.m68k Subject: Re: Observation: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct30.162719.9816@pacbell.net> Date: Mon, 30 Oct 1995 16:27:19 GMT References: <1995Oct26.045019.6153@pipeline.com> <1995Oct27.221519.7070@utexas.edu> <1995Oct28.155119.6116@titech.ac.jp> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Oct28.155119.6116@titech.ac.jp>, aoliveira@titech.ac.jp (Amy Oliveira) writes: > Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Yuki Suzuki US Robotics Courier V.34 @ ISDN 64k bps "The hatch is open. Is anyone listening?"