On Wednesday 13 December 2017 14:48:54 Todd Zuercher wrote: > Is there a problem with the version of RTAI on the Wheezy ISO which > prevents it from working right on a system with an ISA card(s)? > > I have tried several times to install one of the newer Linuxcnc ISOs > on an older system that has been running Linuxcnc on Ubuntu 10.04 for > years. The Wheezy iso seems to install ok until you try to open > Linuxcnc (or start any real time process.)
Todd, you are aware that the ISA interface is clocked at 7.16 (IIRC) megahertz, and that forces a huge cpu slowdown to access it? A slowdown that later realtime kernels can't tolerate? Probably can't even do. Find an older Dell Dimension desktop with all pci slots in it and at least a Pentium P4 + 2 gigs of dram. They are at least 33 megahertz at the mobo bus. Those are often available for a big buck or less at your local computer service shop, and they'll run LCNC from the LCNC install of wheezy just fine. But do the install with a network cable handy as that ISO will need a hundred or more updates once rebooted from the installer. If your current interface is the parport, you'll be ok, but a Mesa 5i25 card will offload all the stepper/encoder/pwm for spindle control nonsense away from the computer. And it gives you a pair of parports so you can do a lot more to/with the machine. If thats still not enough i/o, the 7i90HD gives you 72 at a quite decent price, but you'll probably need a spike stopper in the form of a 7i42TA for each of its 50 pin ribbon cable sockets. ISA was declared dead by M$ with the event of winders 2000 IIRC. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
