Dale Grover wrote: > Jon, > > I did those interface boards pretty quick (milled them using EMC), so > if something doesn't act right, feel free to suspect the hardware. > They weren't tested. > > But, just to be clear, it's all Matt's fault. Somehow. > > Well, I will probably be making a product out of that, but it will need to handle all the signals required for EPP compatibility (simulated by ARM software). It will need to support bi-directional use of the 8 data bits, plus some of the control and status bits. I'll see what you have done, though.
I already use the ALVC164245 chip, that is two mostly independant voltage translating versions of the old 74LS245 bidirectional tristate buffer. I'd probably need two of these, one for the bidir I/O plus outputs, and one for the inputs, with a lot of unused signals. Since the Beagle has so much I/O available, I might be able to put some additional I/O pins on there, for another half-operational parport or something. Heh, now we can blame it all on Torsten, as I'm sure we will give any first cut of RTAI on the Beagle a good trial. Jon ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
