Gene, pci_8255 is in my cvs emc2 run-in-place installation pci_8255.c pci_8255.o and i think the hal_ax5214h.c driver in all emc2 installs is really an 8255 (the src doesnt say that, so may be wrong) tomp
in On Tue, 2008-04-29 at 22:56 -0400, Gene Heskett wrote: > On Tuesday 29 April 2008, Andrew Ayre wrote: > >Wow - 8255s - I didn't know those were still used for commercial products. > > > Small correction, 82C55's, the cmos versions, so the board doesn't draw much > more power than is consumed by any outputs being pulled high. Each line is > limited to about a 2 mill load, but can pull rail to rail both directions. I > had some of them once, sent them someplace that was gonna write a linux > driver. I tried to write one myself, and found I knew very little about 'PC' > architecture. The card contains no bios AFAIK, so its invisible to an lspci > listing. > > Once a linux driver is available, I think they would make a very nice > interface for emc's use. With all 24 lines available on each chip, the i/o > expansion possibilities sure beat the usual parport, an architecture > originally built from the 8255 decades ago. IIRC the actual cabling from > each chip was on a 34 pin floppy drive sized cable, so each card gave you 3, > 34 pin ribbon cables out of a spare slot opening in the back of the case. > > One thing I ran into was that while that web site below shows prices in USD, > they billed my card in AUD and applied the exchange rate, so I paid about a > 20% premium over the quoted price. Quite close to a big buck each at the > time, which was about 4, maybe 5 years ago now. > > I also bought a few of stepper controllers based on the L298 they have, touch > them only with a very long pole, there is no current chopper available for > current regulation. > > >Andy > > > >Dave Keeton wrote: > >> This board looks good! I did just buy a new NI DIO 96 board off of EBAY > >> for 50 bucks....If it does'nt work out I'll check it out. I guess i was > >> completely wrong about the I/O situation. You all have been a big > >> help....How do I go about setting up the drivers for these boards in EMC? > >> I am not all that familiar with Linux.... > >> > >> Dave > >> > >> ----- Original Message ----- > >> From: "Thomas J Powderly" <[EMAIL PROTECTED]> > >> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > >> Sent: Tuesday, April 29, 2008 12:39 PM > >> Subject: Re: [Emc-users] Classicladder > >> > >>> to Dave Keeton: > >>> http://www.futurlec.com/PCI8255.shtml > >>> 79$ US > >>> 72 i/o points > >>> pci > >>> emc2 driver is available, "sorta beta" > >>> regards > >>> TomP > >>> > >>> > >>> > >>> ------------------------------------------------------------------------- > >>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > >>> Don't miss this year's exciting event. There's still time to save $100. > >>> Use priority code J8TL2D2. > >>> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/ja > >>>vaone _______________________________________________ > >>> Emc-users mailing list > >>> Emc-users@lists.sourceforge.net > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > >> ------------------------------------------------------------------------- > >> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > >> Don't miss this year's exciting event. There's still time to save $100. > >> Use priority code J8TL2D2. > >> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/jav > >>aone _______________________________________________ > >> Emc-users mailing list > >> Emc-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
