On Saturday 03 January 2009, Dave Engvall wrote: >It is amazing how many DEC users, etc come crawling out of the woodwork. >All of them with great stories about how things used to be. > >With all this architectural experience there ought to be some >strongly held opinions on a processor chip that would do a >good job on real-time applications such as emc and still be >affordable. I really believe that someplace along the path Intel >is going to make the Px unusable for real time. We as a group are >going to need to be able to migrate to some other chip-set. > >Yes, I know I've been smoking the wrong stuff ... or maybe the right >stuff. > >Ideas?? > >Dave > As a matter of fact, yes. The quad core amd phenoms, (I have a slow one in this box) with some additional controls in the kernel to release one core just for the realtime stuff, and then hand that core to rtai, seems like it might be a pretty ideal situation. The only latency problem I could see would be in freeing up the buss when it needs to access the parport, some method of freezing the other 3 cores in their tracks for a couple of cpu cycles might have to be worked out.
Either that, or do a 'propeller' board for that part, in which case the base loop could probably go away. I've been looking at that chip since it came out, has anyone here played with it yet? >On Jan 3, 2009, at 5:19 PM, Ron Ginger wrote: >> Ok, I cant let this one go without a comment. I joined DEC as a sales >> engineer in the Ann Arbor Michigan office in Feb 1969. That was still >> PDP8 days, the 11 didnt come until 1970. We had a series of >> application >> systems we sold on PDP8's, and as I recall one of them was for >> generating NC code on paper tape. Ive got one box of DEC stuff packed >> away, and I think I still have something here about the NC system. >> >> Under my keyboard as I write this is a PDP15 logo panel, and somewhere >> around here there is still a trophy for the biggest PDP12 sale. >> >> I lasted until the end, bought by Compaq, then by HP, but I took >> the HP >> early retirement offer. I was in every state in the US, most of >> Europe, >> Japan, Australia doing sales support or training. It was a hell of a >> ride while it lasted. >> >> ron ginger >> >> ---------------------------------------------------------------------- >> -------- >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users > >---------------------------------------------------------------------------- >-- _______________________________________________ >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) America, how can I write a holy litany in your silly mood? -- Allen Ginsberg ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
