From bfournier@stanford.edu Sat Sep 21 18:57:58 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!stanford!bfournier From: bfournier@stanford.edu (Bruno Fournier) Newsgroups: comp.sys.m68k Subject: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep21.185758.5790@stanford.edu> Date: Sat, 21 Sep 1996 18:57:58 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 11 Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. At ROM offset 0x0909, the string 'M.H. // THE HATCH IS OPEN // ADVANCED ACOUSTICS LAB' is stored in ASCII. 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? -- Bruno Fournier US Robotics Courier V.34 @ 19,200 bps "Row 14. No joke." From gpopov@ox.ac.uk Sun Sep 22 17:37:58 1996 Path: ashpoly!cascade!mxgate!coyoacan!ox!gpopov From: gpopov@ox.ac.uk (Göran Popov) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep22.173758.9047@ox.ac.uk> Date: Sun, 22 Sep 1996 17:37:58 GMT References: <1996Sep21.185758.5790@stanford.edu> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Sep21.185758.5790@stanford.edu>, bfournier@stanford.edu (Bruno Fournier) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). -- Göran Popov Opinions expressed are solely my own and not those of Oxford University Computing Laboratory. ------------------------------------------------------------ From elindqvist@kth.se Mon Sep 23 21:25:58 1996 Path: ashpoly!cascade!brgate!saturno!kth!elindqvist From: elindqvist@kth.se (Emi Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep23.212558.6219@kth.se> Date: Mon, 23 Sep 1996 21:25:58 GMT References: <1996Sep21.185758.5790@stanford.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Sep21.185758.5790@stanford.edu>, bfournier@stanford.edu (Bruno Fournier) writes: > Looking at the bus architecture of the TWIN-68 board. Motorola engineers, please take a look. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Emi Lindqvist "The hatch is open. Is anyone listening?" Amiga 3000T / NEXTSTEP 3.3 From htanaka@kth.se Tue Sep 24 04:42:58 1996 Path: ashpoly!cascade!mxgate!coyoacan!kth!htanaka From: htanaka@kth.se (Hugo Tanaka) Newsgroups: comp.sys.m68k Subject: Re: TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1996Sep24.044258.7066@kth.se> Date: Tue, 24 Sep 1996 04:42:58 GMT References: <1996Sep21.185758.5790@stanford.edu> <1996Sep22.173758.9047@ox.ac.uk> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Sep22.173758.9047@ox.ac.uk>, gpopov@ox.ac.uk (Göran Popov) writes: > Offset 0x0909 matches the runout groove etching and September 9 (the date of the studio fire). The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Hugo Tanaka -- Royal Institute of Technology, Stockholm "The hatch is open. Is anyone listening?"