From jramirez@clari.net Sat Sep 17 07:51:50 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!jramirez From: jramirez@clari.net (Joachim Ramírez) Newsgroups: comp.sys.m68k Subject: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Sep17.075150.6325@clari.net> Date: Sat, 17 Sep 1994 07:51:50 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Joachim Ramírez Tape trading list upon request. SASE required for international mail. From erobertson@ox.ac.uk Sun Sep 18 20:02:50 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!erobertson From: erobertson@ox.ac.uk (Elaine Robertson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Sep18.200250.6398@ox.ac.uk> Date: Sun, 18 Sep 1994 20:02:50 GMT References: <1994Sep17.075150.6325@clari.net> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Sep17.075150.6325@clari.net>, jramirez@clari.net (Joachim Ramírez) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. PGP Public key available via finger or upon request. -- Elaine Robertson | erobertson@ox.ac.uk PGP Key fingerprint: 4661 4FD0 5D84 285A "Keep the channels open." From mnakamura@kth.se Tue Sep 20 23:08:50 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!kth!mnakamura From: mnakamura@kth.se (Morag Nakamura) Newsgroups: comp.sys.m68k Subject: Re: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Sep20.230850.2280@kth.se> Date: Tue, 20 Sep 1994 23:08:50 GMT References: <1994Sep17.075150.6325@clari.net> <1994Sep18.200250.6398@ox.ac.uk> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Sep18.200250.6398@ox.ac.uk>, erobertson@ox.ac.uk (Elaine Robertson) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Morag Nakamura Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------ From awatanabe@pacbell.net Wed Sep 21 05:28:50 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!pacbell!awatanabe From: awatanabe@pacbell.net (Anton Watanabe) Newsgroups: comp.sys.m68k Subject: Re: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Sep21.052850.2378@pacbell.net> Date: Wed, 21 Sep 1994 05:28:50 GMT References: <1994Sep17.075150.6325@clari.net> <1994Sep18.200250.6398@ox.ac.uk> <1994Sep20.230850.2280@kth.se> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Sep20.230850.2280@kth.se>, mnakamura@kth.se (Morag Nakamura) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Looks like a prototype telecommunications board for military secure voice, not an audio music product. PGP Public key available via finger or upon request. -- === Anton Watanabe === Dept of Electrical Engineering, Pacific Bell Internet Services "Extraordinary claims require extraordinary spectra." From tpark@kiae.su Thu Sep 22 18:36:50 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!kiae!tpark From: tpark@kiae.su (Thiago Park) Newsgroups: comp.sys.m68k Subject: Re: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Sep22.183650.6941@kiae.su> Date: Thu, 22 Sep 1994 18:36:50 GMT References: <1994Sep17.075150.6325@clari.net> <1994Sep18.200250.6398@ox.ac.uk> <1994Sep20.230850.2280@kth.se> <1994Sep21.052850.2378@pacbell.net> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Sep21.052850.2378@pacbell.net>, awatanabe@pacbell.net (Anton Watanabe) writes: > Looks like a prototype telecommunications board for military secure voice, not an audio music product. > PGP Public key available via finger or upon request. 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. -- Thiago Park *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0