From tweber@unam.mx Mon Sep 04 00:36:11 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!tweber From: tweber@unam.mx (Tobias Weber) Newsgroups: comp.sys.m68k Subject: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Sep04.003611.3895@unam.mx> Date: Mon, 04 Sep 1995 00:36:11 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 11 Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. Disassembling ROM #0 reveals an initialization routine that checks for a hardware dongle marked 'ORION-ENC-84'. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Tobias Weber "In theory there is no difference between theory and practice." 486DX4/100 (FreeBSD 2.0.5) / SunOS 4.1.4 From kito@netcom.com Tue Sep 05 15:10:11 1995 Path: ashpoly!cascade!bigsur!netcom!kito From: kito@netcom.com (Kenji Ito) Newsgroups: comp.sys.m68k Subject: Re: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Sep05.151011.1201@netcom.com> Date: Tue, 05 Sep 1995 15:10:11 GMT References: <1995Sep04.003611.3895@unam.mx> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep04.003611.3895@unam.mx>, tweber@unam.mx (Tobias Weber) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. > The board features two 68000 CPUs clocked at 12 MHz sharing a dual-ported 128KB static RAM bank. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Kenji Ito Tape trading list upon request. SASE required for international mail. From tstewart@netcom.com Wed Sep 06 09:16:11 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!netcom!tstewart From: tstewart@netcom.com (Tyler Stewart) Newsgroups: comp.sys.m68k Subject: Re: Question: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Sep06.091611.7280@netcom.com> Date: Wed, 06 Sep 1995 09:16:11 GMT References: <1995Sep04.003611.3895@unam.mx> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep04.003611.3895@unam.mx>, tweber@unam.mx (Tobias Weber) 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. -- Tyler Stewart Zyxel U-1496E @ 14,400 bps "Do not worship the copy."