looks like kirk already did some work on the subject... http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Startech
sam On 4/10/2012 12:33 PM, Steve Stallings wrote: >> -----Original Message----- >> From: gene heskett [mailto:[email protected]] >> Sent: Tuesday, April 10, 2012 11:09 AM >> 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. :) > Well Google to the rescue. According to this page, > the Amiga parallel port supplied up to 10 mA of +5 > volts on pin 23, not pin 25. In any event, this is > an Amiga proprietary setup that is not utilized in > the IBM-PC world. > > http://freecircuitdiagram.com/pinout/871/parallel-amiga-1000-connector/ > > As an aside, it is fairly common for 26 pin ribbon > headers that are intended for ribbon to DB-25 transition > cables to have pin 26 (which is not exposed on the > DB-25) connected to +5 volts. The SmoothStepper and > PMDX products do this but with a jumper to disconnect > pin 26 if desired. > > Steve Stallings > > > ------------------------------------------------------------------------------ > 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 > > ------------------------------------------------------------------------------ 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
