From jmacdonald@purdue.edu Mon Jun 26 19:08:43 1995 Path: ashpoly!cascade!mxgate!coyoacan!purdue!jmacdonald From: jmacdonald@purdue.edu (Jen MacDonald) Newsgroups: comp.sys.m68k Subject: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun26.190843.3585@purdue.edu> Date: Mon, 26 Jun 1995 19:08:43 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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. Schematic diagram in ASCII uploaded to ftp.ashford-poly.edu:/pub/telecom-archives/twin68_array.asc. -- Jen MacDonald -- Purdue University Engineering Computer Network "There are 14 nodes and only 10 countries. Count again." From plopez@clari.net Tue Jun 27 19:21:43 1995 Path: ashpoly!cascade!brgate!saturno!clari!plopez From: plopez@clari.net (Pavel López) Newsgroups: comp.sys.m68k Subject: Re: [INFO] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun27.192143.4344@clari.net> Date: Tue, 27 Jun 1995 19:21:43 GMT References: <1995Jun26.190843.3585@purdue.edu> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jun26.190843.3585@purdue.edu>, jmacdonald@purdue.edu (Jen MacDonald) 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. -- Pavel López Practical Peripherals 14.4 @ 14,400 bps "The carrier frequency does not drift by accident."