From tvasiliev@berkeley.edu Wed Apr 26 17:00:38 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!berkeley!tvasiliev From: tvasiliev@berkeley.edu (Takeshi Vasiliev) Newsgroups: comp.sys.m68k Subject: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr26.170038.8875@berkeley.edu> Date: Wed, 26 Apr 1995 17:00:38 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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 board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. One 28-pin EPROM socket (labeled U14) is completely empty. What firmware was supposed to be in that socket? -- === Takeshi Vasiliev === Dept of Electrical Engineering, UC Berkeley Department of EECS "The hatch is open. Is anyone listening?" From handersson@delphi.com Fri Apr 28 19:13:38 1995 Path: ashpoly!cascade!mxgate!coyoacan!delphi!handersson From: handersson@delphi.com (Hugo Andersson) Newsgroups: comp.sys.m68k Subject: Re: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr28.191338.2150@delphi.com> Date: Fri, 28 Apr 1995 19:13:38 GMT References: <1995Apr26.170038.8875@berkeley.edu> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Apr26.170038.8875@berkeley.edu>, tvasiliev@berkeley.edu (Takeshi Vasiliev) 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. -- Hugo Andersson Opinions expressed are solely my own and not those of Delphi Internet Services. ------------------------------------------------------------ From kfischer@netcom.com Sat Apr 29 15:05:38 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!netcom!kfischer From: kfischer@netcom.com (Kenji Fischer) Newsgroups: comp.sys.m68k Subject: Re: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Apr29.150538.3567@netcom.com> Date: Sat, 29 Apr 1995 15:05:38 GMT References: <1995Apr26.170038.8875@berkeley.edu> <1995Apr28.191338.2150@delphi.com> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Apr28.191338.2150@delphi.com>, handersson@delphi.com (Hugo Andersson) 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Kenji Fischer Zyxel U-1496E @ 14,400 bps "The carrier frequency does not drift by accident."