From hito@utexas.edu Mon May 06 13:21:22 1996 Path: ashpoly!cascade!mxgate!coyoacan!utexas!hito From: hito@utexas.edu (Heather Ito) Newsgroups: comp.sys.m68k Subject: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996May06.132122.1835@utexas.edu> Date: Mon, 06 May 1996 13:21:22 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Heather Ito *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From hwatanabe@unam.mx Wed May 08 07:41:22 1996 Path: ashpoly!cascade!mxgate!coyoacan!unam!hwatanabe From: hwatanabe@unam.mx (Heather Watanabe) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996May08.074122.5422@unam.mx> Date: Wed, 08 May 1996 07:41:22 GMT References: <1996May06.132122.1835@utexas.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 9 In article <1996May06.132122.1835@utexas.edu>, hito@utexas.edu (Heather Ito) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? -- Heather Watanabe | hwatanabe@unam.mx PGP Key fingerprint: C4A2 4911 A1B2 B647 "Keep the channels open." From mperez@u-tokyo.ac.jp Thu May 09 18:54:22 1996 Path: ashpoly!cascade!brgate!saturno!u-tokyo!mperez From: mperez@u-tokyo.ac.jp (Mikhail Pérez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996May09.185422.8581@u-tokyo.ac.jp> Date: Thu, 09 May 1996 18:54:22 GMT References: <1996May06.132122.1835@utexas.edu> <1996May08.074122.5422@unam.mx> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996May08.074122.5422@unam.mx>, hwatanabe@unam.mx (Heather Watanabe) writes: > Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? Looks like a prototype telecommunications board for military secure voice, not an audio music product. Top-posters will be placed in my ~/.killfile without notice. -- Mikhail Pérez Tape trading list upon request. SASE required for international mail. From jlee@cern.ch Fri May 10 04:27:22 1996 Path: ashpoly!cascade!brgate!saturno!cern!jlee From: jlee@cern.ch (Joachim Lee) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996May10.042722.4685@cern.ch> Date: Fri, 10 May 1996 04:27:22 GMT References: <1996May06.132122.1835@utexas.edu> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 10 In article <1996May06.132122.1835@utexas.edu>, hito@utexas.edu (Heather Ito) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. 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. -- Joachim Lee Opinions expressed are solely my own and not those of European Laboratory for Particle Physics, Geneva. ------------------------------------------------------------