From bjohansson@pipeline.com Tue Sep 10 13:33:14 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!pipeline!bjohansson From: bjohansson@pipeline.com (Bill Johansson) Newsgroups: comp.sys.m68k Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep10.133314.9035@pipeline.com> Date: Tue, 10 Sep 1996 13:33:14 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] 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'. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Bill Johansson Opinions expressed are solely my own and not those of The Pipeline Internet Network. ------------------------------------------------------------ From osouza@hanse.de Thu Sep 12 05:04:14 1996 Path: ashpoly!cascade!transat!ukc!fennimore!hanse!osouza From: osouza@hanse.de (Olga Souza) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep12.050414.9534@hanse.de> Date: Thu, 12 Sep 1996 05:04:14 GMT References: <1996Sep10.133314.9035@pipeline.com> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Sep10.133314.9035@pipeline.com>, bjohansson@pipeline.com (Bill Johansson) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. 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. -- Olga Souza Practical Peripherals 14.4 @ ISDN 64k bps "Row 14. No joke." From gjohansson@purdue.edu Fri Sep 13 05:32:14 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!gjohansson From: gjohansson@purdue.edu (Graham Johansson) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep13.053214.2177@purdue.edu> Date: Fri, 13 Sep 1996 05:32:14 GMT References: <1996Sep10.133314.9035@pipeline.com> <1996Sep12.050414.9534@hanse.de> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Sep12.050414.9534@hanse.de>, osouza@hanse.de (Olga Souza) writes: > 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. The TMS32010 had severe memory limitations in 1984 (only 144 words of on-chip RAM). Dual 68000s gave them full 16MB address space. -- === Graham Johansson === Dept of Electrical Engineering, Purdue University Engineering Computer Network "Extraordinary claims require extraordinary spectra." From jpark@cern.ch Sat Sep 14 18:01:14 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!jpark From: jpark@cern.ch (Julien Park) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep14.180114.8093@cern.ch> Date: Sat, 14 Sep 1996 18:01:14 GMT References: <1996Sep10.133314.9035@pipeline.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Sep10.133314.9035@pipeline.com>, bjohansson@pipeline.com (Bill Johansson) writes: > 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'. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- === Julien Park === Dept of Electrical Engineering, European Laboratory for Particle Physics, Geneva "Extraordinary claims require extraordinary spectra."