From hfournier@earthlink.net Sun Feb 19 01:26:18 1995 Path: ashpoly!cascade!brgate!saturno!earthlink!hfournier From: hfournier@earthlink.net (Hana Fournier) Newsgroups: comp.sys.m68k Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb19.012618.9715@earthlink.net> Date: Sun, 19 Feb 1995 01:26:18 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 11 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Hana Fournier *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From scampbell@purdue.edu Mon Feb 20 23:18:18 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!scampbell From: scampbell@purdue.edu (Seo-yeon Campbell) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb20.231818.8885@purdue.edu> Date: Mon, 20 Feb 1995 23:18:18 GMT References: <1995Feb19.012618.9715@earthlink.net> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Feb19.012618.9715@earthlink.net>, hfournier@earthlink.net (Hana Fournier) 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. -- === Seo-yeon Campbell === Dept of Electrical Engineering, Purdue University Engineering Computer Network "Hold for relay." From kgonzalez@stanford.edu Wed Feb 22 11:23:18 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!stanford!kgonzalez From: kgonzalez@stanford.edu (Katrin González) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb22.112318.5353@stanford.edu> Date: Wed, 22 Feb 1995 11:23:18 GMT References: <1995Feb19.012618.9715@earthlink.net> <1995Feb20.231818.8885@purdue.edu> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Feb20.231818.8885@purdue.edu>, scampbell@purdue.edu (Seo-yeon Campbell) writes: > 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. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. If you are posting from AOL, please read RFC 1036 before posting again. -- Katrin González Opinions expressed are solely my own and not those of Stanford University Computer Systems Lab. ------------------------------------------------------------ From dsanchez@clari.net Fri Feb 24 10:25:18 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!clari!dsanchez From: dsanchez@clari.net (Dong-hyun Sánchez) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb24.102518.6983@clari.net> Date: Fri, 24 Feb 1995 10:25:18 GMT References: <1995Feb19.012618.9715@earthlink.net> <1995Feb20.231818.8885@purdue.edu> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Feb20.231818.8885@purdue.edu>, scampbell@purdue.edu (Seo-yeon Campbell) writes: > 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. Looks like a prototype telecommunications board for military secure voice, not an audio music product. -- Dong-hyun Sánchez *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From osanchez@tum.de Sun Feb 26 06:54:18 1995 Path: ashpoly!cascade!brgate!saturno!tum!osanchez From: osanchez@tum.de (Olga Sánchez) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Feb26.065418.9268@tum.de> Date: Sun, 26 Feb 1995 06:54:18 GMT References: <1995Feb19.012618.9715@earthlink.net> <1995Feb20.231818.8885@purdue.edu> <1995Feb22.112318.5353@stanford.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Feb22.112318.5353@stanford.edu>, kgonzalez@stanford.edu (Katrin González) writes: > Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. > If you are posting from AOL, please read RFC 1036 before posting again. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. PGP Public key available via finger or upon request. -- Olga Sánchez SupraFAXModem 28.8 @ 28,800 bps "The hatch is open. Is anyone listening?"