On Wednesday 30 April 2008, sam sokolik wrote: >There is an issue with the pci_8255 driver at the moment. If any of the >pins are set to inputs - it will hardlock the computer after a certain >amount of time. (not really sure as I have not looked at it for a few >weeks iirc it seems to be dependent on how many times the input gets >switched.) This is something known to the developers and when they get >a chance they will fix it. I am sure it will be fixed soon. > >sam
That chip generates an IRQ for any input status change, and if there is not a registered IRQ handler, boom! I recall that back in the 80's when I used one of them to build an eprom programmer. At the time I was driving it with a z-80, a dain bramaged chip IMO. The IRQ handler turned out to be very simple, read the register & throw it away. I was using all bit lines, but apparently there was a small glitch in the write to verify read switching that triggered it. That read was garbage, the next one 2 u-s later was good. >Thomas J Powderly wrote: >> Gene, >> nothing written by me >> Jepler (?) wrote pci_8255.c >> its from cvs >> some info here >> http://emergent.unpythonic.net/01165433819 >> >> hal_ax5214 is from the live cd >> John Kasunich wrote that >> >> regards >> tomp >> ---snip---- >> >>>> tomp >>> >>> Great Thomas. Is this code you did, or were you able to make the code >>> that came on the cd's with the cards actually build on linux? >> >> ----snip---- >> >> >> ------------------------------------------------------------------------- >> 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 -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) You will be imprisoned for contributing your time and skill to a bank robbery. ------------------------------------------------------------------------- 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
