On Tue, 10 Apr 2012, gene heskett wrote: > Date: Tue, 10 Apr 2012 12:08:45 -0400 > From: gene heskett <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: [email protected] > Subject: Re: [Emc-users] Hal_parport and EPP > > On Tuesday, April 10, 2012 12:00:47 PM Stephen Dubovsky did opine: > >> I don't think a power pin has ever been included in a std parallel port. >> http://en.wikipedia.org/wiki/Parallel_port >> > According to that, no. But I noted that it says also that pin 25 was not > always connected to ground, and in the case I am recalling from 20 some > years ago, the parport in question did have 5 volts on pin 25. > Serendipity? As I recall, it was on the MFC-3 card in my amiga 2000 at the > time. I had assumed, and of course wikipedia didn't exist in 1991, that it > was SOP. > > I sit corrected. :) >
It does sound like a good thing to do (and I've done it by putting a strong pullup on a unused parallel port input pin to power external programming dongles) We (optionally) use "parallel port" pins 22,23,24, and 25 for 5V power on the 5I25 to supply daughtercard/breakout power Peter Wallace ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
