From kschneider@clari.net Sun Nov 26 07:19:37 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!clari!kschneider From: kschneider@clari.net (Kenji Schneider) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Nov26.071937.7989@clari.net> Date: Sun, 26 Nov 1995 07:19:37 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net 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'. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- === Kenji Schneider === Dept of Electrical Engineering, ClariNet Communications Corp "There are 14 nodes and only 10 countries. Count again." From amacdonald@tum.de Mon Nov 27 04:03:37 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!tum!amacdonald From: amacdonald@tum.de (Anja MacDonald) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Nov27.040337.7536@tum.de> Date: Mon, 27 Nov 1995 04:03:37 GMT References: <1995Nov26.071937.7989@clari.net> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Nov26.071937.7989@clari.net>, kschneider@clari.net (Kenji Schneider) writes: > Hardware teardown of the dual-68000 DSP accelerator board used in the Stardust project. That dual-ported SRAM design is ingenious. It avoids bus arbitration contention between the two 68k processors entirely. -- Anja MacDonald "Tape doesn't lie at 02:14. Ears do." Commodore Amiga 500 (1MB OCS) / NEXTSTEP 3.3