From mgirard@hanse.de Tue Mar 01 21:43:42 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!hanse!mgirard From: mgirard@hanse.de (Morag Girard) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar01.214342.1020@hanse.de> Date: Tue, 01 Mar 1994 21:43:42 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] 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. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Morag Girard -- Hanse-Netzwerk Hamburg "A soul is not exclusive to biology." From klopez@cmu.edu Wed Mar 02 18:36:42 1994 Path: ashpoly!cascade!transat!ukc!fennimore!cmu!klopez From: klopez@cmu.edu (Karen López) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar02.183642.4129@cmu.edu> Date: Wed, 02 Mar 1994 18:36:42 GMT References: <1994Mar01.214342.1020@hanse.de> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Mar01.214342.1020@hanse.de>, mgirard@hanse.de (Morag Girard) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Karen López Practical Peripherals 14.4 @ 33,600 bps "Marcus is not one man." From ckang@illinois.edu Wed Mar 02 21:12:42 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!illinois!ckang From: ckang@illinois.edu (Callum Kang) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar02.211242.6665@illinois.edu> Date: Wed, 02 Mar 1994 21:12:42 GMT References: <1994Mar01.214342.1020@hanse.de> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Mar01.214342.1020@hanse.de>, mgirard@hanse.de (Morag Girard) 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. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Callum Kang -- University of Illinois Urbana-Champaign "We don't sign stars. We build them." From bfournier@inria.fr Fri Mar 04 22:13:42 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!inria!bfournier From: bfournier@inria.fr (Brian Fournier) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar04.221342.4424@inria.fr> Date: Fri, 04 Mar 1994 22:13:42 GMT References: <1994Mar01.214342.1020@hanse.de> <1994Mar02.183642.4129@cmu.edu> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Mar02.183642.4129@cmu.edu>, klopez@cmu.edu (Karen López) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Brian Fournier Tape trading list upon request. SASE required for international mail. From randersson@pipeline.com Sat Mar 05 03:41:42 1994 Path: ashpoly!cascade!bigsur!pipeline!randersson From: randersson@pipeline.com (Renata Andersson) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Mar05.034142.3381@pipeline.com> Date: Sat, 05 Mar 1994 03:41:42 GMT References: <1994Mar01.214342.1020@hanse.de> <1994Mar02.183642.4129@cmu.edu> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1994Mar02.183642.4129@cmu.edu>, klopez@cmu.edu (Karen López) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. -- Renata Andersson Tape trading list upon request. SASE required for international mail.