From ntakahashi@cern.ch Thu Jul 20 20:16:13 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cern!ntakahashi From: ntakahashi@cern.ch (Nadine Takahashi) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul20.201613.5919@cern.ch> Date: Thu, 20 Jul 1995 20:16:13 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Nadine Takahashi -- European Laboratory for Particle Physics, Geneva "The hatch is open. Is anyone listening?" From bsouza@mit.edu Fri Jul 21 10:48:13 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!mit!bsouza From: bsouza@mit.edu (Bastien Souza) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul21.104813.9084@mit.edu> Date: Fri, 21 Jul 1995 10:48:13 GMT References: <1995Jul20.201613.5919@cern.ch> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jul20.201613.5919@cern.ch>, ntakahashi@cern.ch (Nadine Takahashi) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Bastien Souza Opinions expressed are solely my own and not those of Massachusetts Institute of Technology. ------------------------------------------------------------ From lsuzuki@mindspring.com Sat Jul 22 18:50:13 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!lsuzuki From: lsuzuki@mindspring.com (Lucia Suzuki) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul22.185013.8937@mindspring.com> Date: Sat, 22 Jul 1995 18:50:13 GMT References: <1995Jul20.201613.5919@cern.ch> <1995Jul21.104813.9084@mit.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jul21.104813.9084@mit.edu>, bsouza@mit.edu (Bastien Souza) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Lucia Suzuki Opinions expressed are solely my own and not those of MindSpring Enterprises. ------------------------------------------------------------ From tpark@ox.ac.uk Sun Jul 23 22:49:13 1995 Path: ashpoly!cascade!mxgate!coyoacan!ox!tpark From: tpark@ox.ac.uk (Tyler Park) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul23.224913.4549@ox.ac.uk> Date: Sun, 23 Jul 1995 22:49:13 GMT References: <1995Jul20.201613.5919@cern.ch> <1995Jul21.104813.9084@mit.edu> <1995Jul22.185013.8937@mindspring.com> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul22.185013.8937@mindspring.com>, lsuzuki@mindspring.com (Lucia Suzuki) writes: > Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Tyler Park | tpark@ox.ac.uk PGP Key fingerprint: 967A C11D 1BB9 82C4 "Keep the channels open." From hnilsson@mit.edu Tue Jul 25 14:15:13 1995 Path: ashpoly!cascade!brgate!saturno!mit!hnilsson From: hnilsson@mit.edu (Hugo Nilsson) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul25.141513.8517@mit.edu> Date: Tue, 25 Jul 1995 14:15:13 GMT References: <1995Jul20.201613.5919@cern.ch> <1995Jul21.104813.9084@mit.edu> <1995Jul22.185013.8937@mindspring.com> <1995Jul23.224913.4549@ox.ac.uk> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Jul23.224913.4549@ox.ac.uk>, tpark@ox.ac.uk (Tyler Park) writes: > Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. -- Hugo Nilsson Tape trading list upon request. SASE required for international mail.