On Sunday 07 July 2019 16:28:06 Sam Sokolik wrote: > I think the driver was developed for this card. > https://www.futurlec.com/PCI8255.shtml > > Both Jeff e and I had issues with the system locking up. Hard lock. > But it has been a few years... > So did I Sam. I had bought 3 of those futurelec triple 82C55 gismos, I boxed them up and sent them to someone whom I've long since forgotten about, who promised to write a driver, never heard a peep back. Maybe thats the driver that resulted?
Nor did I ever hear back from futurlec when I fussed about the advertised price in USD being about $45 a card, but when they arrived COD it was much more per card, just a twenty short of $500 for 3 of them. I wrote them off as the price of my education, but I've also not bought anything else purported to be Aussie. That was indeed an expensive education in exchange rates. Today its a shrug, that water having been recycled quite a few times by now. :-) > On Sun, Jul 7, 2019, 2:51 PM andy pugh <[email protected]> wrote: > > On Sat, 6 Jul 2019 at 18:07, Roland Jollivet > > <[email protected]> > > > > wrote: > > > Now, if I used one pci-bridge 8255 type card and used all the I/O > > > (A,B,C) to support 3 encoders, could I use, say a Pic processor to > > > read the > > > > encoder > > > > > and convert to 8bit data, and then; > > > These 8bits are presented to the 8255 ports so Lcnc can do a > > > snapshot > > > > read > > > > > of the encoder values to close a servo loop. > > > > Do you know that LinuxCNC has an 8255 driver? > > > > You can be fogiven for not knowing, I see no sign of a mention in > > the docs, but here is the code: > > https://github.com/LinuxCNC/linuxcnc/blob/master/src/hal/drivers/pci > >_8255.c > > > > and "loadrt pci_8255" works. > > > > -- > > atp > > "A motorcycle is a bicycle with a pandemonium attachment and is > > designed for the especial use of mechanical geniuses, daredevils and > > lunatics." > > — George Fitch, Atlanta Constitution Newspaper, 1916 > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
