From kkarlsson@mindspring.com Mon Oct 16 22:21:10 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!mindspring!kkarlsson From: kkarlsson@mindspring.com (Kenji Karlsson) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct16.222110.1850@mindspring.com> Date: Mon, 16 Oct 1995 22:21:10 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N 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. 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. -- Kenji Karlsson Opinions expressed are solely my own and not those of MindSpring Enterprises. ------------------------------------------------------------ From oramirez@pipeline.com Wed Oct 18 15:39:10 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!pipeline!oramirez From: oramirez@pipeline.com (Olga Ramírez) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct18.153910.6982@pipeline.com> Date: Wed, 18 Oct 1995 15:39:10 GMT References: <1995Oct16.222110.1850@mindspring.com> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Oct16.222110.1850@mindspring.com>, kkarlsson@mindspring.com (Kenji Karlsson) 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. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Olga Ramírez | oramirez@pipeline.com PGP Key fingerprint: 8469 B88D 1C0D 056C "Keep the channels open." From khughes@tum.de Thu Oct 19 19:36:10 1995 Path: ashpoly!cascade!bigsur!tum!khughes From: khughes@tum.de (Karen Hughes) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct19.193610.7686@tum.de> Date: Thu, 19 Oct 1995 19:36:10 GMT References: <1995Oct16.222110.1850@mindspring.com> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Oct16.222110.1850@mindspring.com>, kkarlsson@mindspring.com (Kenji Karlsson) 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. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Karen Hughes -- Technische Universität München "There are 14 nodes and only 10 countries. Count again." From asokolov@netcom.com Fri Oct 20 14:41:10 1995 Path: ashpoly!cascade!brgate!saturno!netcom!asokolov From: asokolov@netcom.com (Aiko Sokolov) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Oct20.144110.3287@netcom.com> Date: Fri, 20 Oct 1995 14:41:10 GMT References: <1995Oct16.222110.1850@mindspring.com> <1995Oct19.193610.7686@tum.de> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Oct19.193610.7686@tum.de>, khughes@tum.de (Karen Hughes) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. > Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! 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. -- Aiko Sokolov "When every node is whole, the channel opens." 486DX2/66 (Linux 1.2.13) / FreeBSD 2.1