From mkarlsson@illinois.edu Sun May 21 21:35:25 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!illinois!mkarlsson From: mkarlsson@illinois.edu (Mateo Karlsson) Newsgroups: comp.sys.m68k Subject: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May21.213525.9528@illinois.edu> Date: Sun, 21 May 1995 21:35:25 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 10 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. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Mateo Karlsson -- University of Illinois Urbana-Champaign "They will send a copy in my place." From jtakahashi@titech.ac.jp Tue May 23 18:10:25 1995 Path: ashpoly!cascade!brgate!saturno!titech!jtakahashi From: jtakahashi@titech.ac.jp (Jens Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May23.181025.8294@titech.ac.jp> Date: Tue, 23 May 1995 18:10:25 GMT References: <1995May21.213525.9528@illinois.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May21.213525.9528@illinois.edu>, mkarlsson@illinois.edu (Mateo Karlsson) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Jens Takahashi *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From tperez@rwth-aachen.de Wed May 24 18:13:25 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!rwth-aachen!tperez From: tperez@rwth-aachen.de (Takeshi Pérez) Newsgroups: comp.sys.m68k Subject: Re: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May24.181325.2160@rwth-aachen.de> Date: Wed, 24 May 1995 18:13:25 GMT References: <1995May21.213525.9528@illinois.edu> <1995May23.181025.8294@titech.ac.jp> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May23.181025.8294@titech.ac.jp>, jtakahashi@titech.ac.jp (Jens Takahashi) writes: > Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Takeshi Pérez Opinions expressed are solely my own and not those of RWTH Aachen Informatik. ------------------------------------------------------------