From kbrennan@kth.se Tue Mar 19 23:02:56 1996 Path: ashpoly!cascade!transat!ukc!fennimore!kth!kbrennan From: kbrennan@kth.se (Katrin Brennan) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Mar19.230256.4982@kth.se> Date: Tue, 19 Mar 1996 23:02:56 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se 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? -- Katrin Brennan Tape trading list upon request. SASE required for international mail. From lrodriguez@panix.com Wed Mar 20 11:17:56 1996 Path: ashpoly!cascade!brgate!saturno!panix!lrodriguez From: lrodriguez@panix.com (Lisa Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Mar20.111756.9642@panix.com> Date: Wed, 20 Mar 1996 11:17:56 GMT References: <1996Mar19.230256.4982@kth.se> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Mar19.230256.4982@kth.se>, kbrennan@kth.se (Katrin Brennan) 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. Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. -- Lisa Rodríguez Opinions expressed are solely my own and not those of Public Access Unix of New York. ------------------------------------------------------------ From tgonzalez@u-tokyo.ac.jp Fri Mar 22 12:20:56 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!tgonzalez From: tgonzalez@u-tokyo.ac.jp (Tomas González) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Mar22.122056.9699@u-tokyo.ac.jp> Date: Fri, 22 Mar 1996 12:20:56 GMT References: <1996Mar19.230256.4982@kth.se> <1996Mar20.111756.9642@panix.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Mar20.111756.9642@panix.com>, lrodriguez@panix.com (Lisa Rodríguez) writes: > Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. Looks like a prototype telecommunications board for military secure voice, not an audio music product. -- === Tomas González === Dept of Electrical Engineering, University of Tokyo Department of Information Science "5 sigma is a discovery. 7 is a question." From tjohansson@cern.ch Fri Mar 22 17:51:56 1996 Path: ashpoly!cascade!transat!ukc!fennimore!cern!tjohansson From: tjohansson@cern.ch (Tobias Johansson) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Mar22.175156.8387@cern.ch> Date: Fri, 22 Mar 1996 17:51:56 GMT References: <1996Mar19.230256.4982@kth.se> <1996Mar20.111756.9642@panix.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Mar20.111756.9642@panix.com>, lrodriguez@panix.com (Lisa Rodríguez) writes: > Socket U14 was probably for the decryption key lookup table. Without that EPROM, CPU #1 is running in an idle loop. 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. Top-posters will be placed in my ~/.killfile without notice. -- Tobias Johansson *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0