From tokonkwo@rwth-aachen.de Thu Jul 13 18:25:49 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!rwth-aachen!tokonkwo From: tokonkwo@rwth-aachen.de (Tomas Okonkwo) Newsgroups: comp.sys.m68k Subject: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul13.182549.2608@rwth-aachen.de> Date: Thu, 13 Jul 1995 18:25:49 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. 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? -- Tomas Okonkwo *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0 From arobertson@cmu.edu Sat Jul 15 18:54:49 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cmu!arobertson From: arobertson@cmu.edu (Anton Robertson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul15.185449.2670@cmu.edu> Date: Sat, 15 Jul 1995 18:54:49 GMT References: <1995Jul13.182549.2608@rwth-aachen.de> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jul13.182549.2608@rwth-aachen.de>, tokonkwo@rwth-aachen.de (Tomas Okonkwo) writes: > Managed to dump the 27256 EPROMs from the TWIN-68 Rev C board recovered from Ashford Poly. Looks like a prototype telecommunications board for military secure voice, not an audio music product. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- === Anton Robertson === Dept of Electrical Engineering, Carnegie Mellon University School of CS "A soul is not exclusive to biology." From msmirnov@mit.edu Mon Jul 17 16:02:49 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!mit!msmirnov From: msmirnov@mit.edu (Mikhail Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul17.160249.4335@mit.edu> Date: Mon, 17 Jul 1995 16:02:49 GMT References: <1995Jul13.182549.2608@rwth-aachen.de> <1995Jul15.185449.2670@cmu.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul15.185449.2670@cmu.edu>, arobertson@cmu.edu (Anton Robertson) writes: > Looks like a prototype telecommunications board for military secure voice, not an audio music product. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- Mikhail Smirnov *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From mschneider@tum.de Tue Jul 18 10:49:49 1995 Path: ashpoly!cascade!brgate!saturno!tum!mschneider From: mschneider@tum.de (Mei Schneider) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul18.104949.3231@tum.de> Date: Tue, 18 Jul 1995 10:49:49 GMT References: <1995Jul13.182549.2608@rwth-aachen.de> <1995Jul15.185449.2670@cmu.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jul15.185449.2670@cmu.edu>, arobertson@cmu.edu (Anton Robertson) writes: > Looks like a prototype telecommunications board for military secure voice, not an audio music product. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? -- Mei Schneider Opinions expressed are solely my own and not those of Technische Universität München. ------------------------------------------------------------ From dgonzalez@pacbell.net Wed Jul 19 13:28:49 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!dgonzalez From: dgonzalez@pacbell.net (Dmitri González) Newsgroups: comp.sys.m68k Subject: Re: Discussion: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jul19.132849.2525@pacbell.net> Date: Wed, 19 Jul 1995 13:28:49 GMT References: <1995Jul13.182549.2608@rwth-aachen.de> <1995Jul15.185449.2670@cmu.edu> <1995Jul17.160249.4335@mit.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Jul17.160249.4335@mit.edu>, msmirnov@mit.edu (Mikhail Smirnov) writes: > The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? -- Dmitri González Tape trading list upon request. SASE required for international mail.