From rramirez@clari.net Sat Jan 21 04:01:35 1995 Path: ashpoly!cascade!bigsur!clari!rramirez From: rramirez@clari.net (Rodrigo Ramírez) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan21.040135.1867@clari.net> Date: Sat, 21 Jan 1995 04:01:35 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 10 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. 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? -- Rodrigo Ramírez Tape trading list upon request. SASE required for international mail. From jhernandez@pipeline.com Sun Jan 22 20:58:35 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!jhernandez From: jhernandez@pipeline.com (Jens Hernández) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan22.205835.7350@pipeline.com> Date: Sun, 22 Jan 1995 20:58:35 GMT References: <1995Jan21.040135.1867@clari.net> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jan21.040135.1867@clari.net>, rramirez@clari.net (Rodrigo Ramírez) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Jens Hernández | jhernandez@pipeline.com PGP Key fingerprint: 937A 0F9F 6AED 1EA1 "Keep the channels open." From aperez@cern.ch Tue Jan 24 12:40:35 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cern!aperez From: aperez@cern.ch (Anton Pérez) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan24.124035.4592@cern.ch> Date: Tue, 24 Jan 1995 12:40:35 GMT References: <1995Jan21.040135.1867@clari.net> <1995Jan22.205835.7350@pipeline.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Jan22.205835.7350@pipeline.com>, jhernandez@pipeline.com (Jens Hernández) 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. If you are posting from AOL, please read RFC 1036 before posting again. -- Anton Pérez "Hold for relay." 486DX4/100 (FreeBSD 2.0.5) / System 7.5.1 From nsilva@mit.edu Wed Jan 25 20:06:35 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mit!nsilva From: nsilva@mit.edu (Natalia Silva) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan25.200635.3097@mit.edu> Date: Wed, 25 Jan 1995 20:06:35 GMT References: <1995Jan21.040135.1867@clari.net> <1995Jan22.205835.7350@pipeline.com> <1995Jan24.124035.4592@cern.ch> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jan24.124035.4592@cern.ch>, aperez@cern.ch (Anton Pérez) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Natalia Silva Opinions expressed are solely my own and not those of Massachusetts Institute of Technology. ------------------------------------------------------------ From tlee@cmu.edu Fri Jan 27 04:14:35 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!tlee From: tlee@cmu.edu (Tobias Lee) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jan27.041435.1265@cmu.edu> Date: Fri, 27 Jan 1995 04:14:35 GMT References: <1995Jan21.040135.1867@clari.net> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Jan21.040135.1867@clari.net>, rramirez@clari.net (Rodrigo Ramírez) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > 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). -- Tobias Lee SupraFAXModem 28.8 @ 14,400 bps "There are 14 nodes and only 10 countries. Count again."