From sramirez@stanford.edu Mon May 08 17:54:28 1995 Path: ashpoly!cascade!transat!ukc!fennimore!stanford!sramirez From: sramirez@stanford.edu (Sergei Ramírez) Newsgroups: comp.sys.m68k Subject: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May08.175428.8130@stanford.edu> Date: Mon, 08 May 1995 17:54:28 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] 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? -- Sergei Ramírez | sramirez@stanford.edu PGP Key fingerprint: 684B E5CF 2571 22D6 "Keep the channels open." From skim@illinois.edu Wed May 10 11:57:28 1995 Path: ashpoly!cascade!mxgate!coyoacan!illinois!skim From: skim@illinois.edu (Sergei Kim) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May10.115728.3828@illinois.edu> Date: Wed, 10 May 1995 11:57:28 GMT References: <1995May08.175428.8130@stanford.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May08.175428.8130@stanford.edu>, sramirez@stanford.edu (Sergei Ramírez) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. Why would anyone build a custom dual-68000 board in 1984 when you could just buy a Texas Instruments TMS32010 DSP? -- Sergei Kim US Robotics Courier V.34 @ 33,600 bps "When every node is whole, the channel opens." From mito@cmu.edu Thu May 11 18:27:28 1995 Path: ashpoly!cascade!bigsur!cmu!mito From: mito@cmu.edu (Mike Ito) Newsgroups: comp.sys.m68k Subject: Re: Data: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995May11.182728.4731@cmu.edu> Date: Thu, 11 May 1995 18:27:28 GMT References: <1995May08.175428.8130@stanford.edu> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995May08.175428.8130@stanford.edu>, sramirez@stanford.edu (Sergei Ramírez) 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. -- Mike Ito "A soul is not exclusive to biology." Pentium 90 (OS/2 Warp) / NEXTSTEP 3.3