From vmartinez@utexas.edu Mon Jun 19 23:49:08 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!utexas!vmartinez From: vmartinez@utexas.edu (Valeria Martínez) Newsgroups: comp.sys.m68k Subject: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun19.234908.1760@utexas.edu> Date: Mon, 19 Jun 1995 23:49:08 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 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. CPU #0 handles host bus interfacing and DMA, while CPU #1 is dedicated entirely to a 16-bit MAC (multiply-accumulate) unit. Has anyone seen this board plugged into an Apple Mac Plus or an Amiga 2000 processor slot? -- Valeria Martínez -- University of Texas at Austin "5 sigma is a discovery. 7 is a question." From dnovak@cmu.edu Thu Jun 22 00:29:08 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!dnovak From: dnovak@cmu.edu (Dave Novak) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun22.002908.3473@cmu.edu> Date: Thu, 22 Jun 1995 00:29:08 GMT References: <1995Jun19.234908.1760@utexas.edu> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jun19.234908.1760@utexas.edu>, vmartinez@utexas.edu (Valeria Martínez) writes: > 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 MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- Dave Novak Practical Peripherals 14.4 @ 28,800 bps "Extraordinary claims require extraordinary spectra." From kbrennan@u-tokyo.ac.jp Fri Jun 23 12:10:08 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!kbrennan From: kbrennan@u-tokyo.ac.jp (Kirsty Brennan) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] TWIN-68 Rev C coprocessor board - schematic analysis & EPROM dump Message-ID: <1995Jun23.121008.8302@u-tokyo.ac.jp> Date: Fri, 23 Jun 1995 12:10:08 GMT References: <1995Jun19.234908.1760@utexas.edu> <1995Jun22.002908.3473@cmu.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun22.002908.3473@cmu.edu>, dnovak@cmu.edu (Dave Novak) writes: > The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. The MAC unit looks like a precursor to the DSP56001 that Motorola put in the NeXT and Atari Falcon. -- === Kirsty Brennan === Dept of Electrical Engineering, University of Tokyo Department of Information Science "Hold for relay."