From dfournier@berkeley.edu Sun Jun 19 04:10:15 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!dfournier From: dfournier@berkeley.edu (Dave Fournier) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun19.041015.2428@berkeley.edu> Date: Sun, 19 Jun 1994 04:10:15 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Dave Fournier Practical Peripherals 14.4 @ 28,800 bps "Marcus is not one man." From jpetrov@unam.mx Mon Jun 20 01:57:15 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!unam!jpetrov From: jpetrov@unam.mx (Jens Petrov) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun20.015715.8235@unam.mx> Date: Mon, 20 Jun 1994 01:57:15 GMT References: <1994Jun19.041015.2428@berkeley.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Jun19.041015.2428@berkeley.edu>, dfournier@berkeley.edu (Dave Fournier) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Jens Petrov Opinions expressed are solely my own and not those of Universidad Nacional Autónoma de México (DGSCA). ------------------------------------------------------------ From beriksson@kth.se Tue Jun 21 09:20:15 1994 Path: ashpoly!cascade!brgate!saturno!kth!beriksson From: beriksson@kth.se (Bill Eriksson) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun21.092015.6813@kth.se> Date: Tue, 21 Jun 1994 09:20:15 GMT References: <1994Jun19.041015.2428@berkeley.edu> <1994Jun20.015715.8235@unam.mx> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Jun20.015715.8235@unam.mx>, jpetrov@unam.mx (Jens Petrov) 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. -- Bill Eriksson Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------ From imuller@rwth-aachen.de Thu Jun 23 13:01:15 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!imuller From: imuller@rwth-aachen.de (Ines Müller) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun23.130115.1136@rwth-aachen.de> Date: Thu, 23 Jun 1994 13:01:15 GMT References: <1994Jun19.041015.2428@berkeley.edu> <1994Jun20.015715.8235@unam.mx> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 8 In article <1994Jun20.015715.8235@unam.mx>, jpetrov@unam.mx (Jens Petrov) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? -- Ines Müller Tape trading list upon request. SASE required for international mail. From stakahashi@uu.net Sat Jun 25 07:55:15 1994 Path: ashpoly!cascade!mxgate!coyoacan!uu!stakahashi From: stakahashi@uu.net (Steve Takahashi) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1994Jun25.075515.6766@uu.net> Date: Sat, 25 Jun 1994 07:55:15 GMT References: <1994Jun19.041015.2428@berkeley.edu> <1994Jun20.015715.8235@unam.mx> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Jun20.015715.8235@unam.mx>, jpetrov@unam.mx (Jens Petrov) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Marcus Hale designed the TWIN-68 board before he disappeared. That's why his initials are on the PCB silkscreen. PGP Public key available via finger or upon request. -- Steve Takahashi "5 sigma is a discovery. 7 is a question." Macintosh IIfx / AmigaOS 3.1