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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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build yer own ISA computer
I am somewhat confused why a faster processor is necessary. Older
designs did not use interrupts. Much processor time wasted monitoring an IO port that only had useful information in (maybe) one in 10,000 IO reads. A faster processor may mean more computer cycles wasted monitoring the same port. A faster processor would mean more computer instructions wasted making other 'tasks' still appear slow. IOW I am not convinced you know why a P3 is too slow for monitoring and controlling mechanical motion. P3 should be more than fast enough. But an ISA bus is only 6 Mhz. ISA bus means system goes to idle (a wait state) for an ISA response. More CPU processing power lost waiting for I/O because an interface board is ISA. IOW I am not sure that a faster processor will make your system faster. Your bottleneck may not be processor speed. Processing restrictions may be due to various 'missing features' in hardware. On Jul 17, 11:30 am, "Karl Townsend" wrote: I use Camsoft. There is a Galil card on an ISA slot to run real time motion control. I've used a P3 for years, its been marginal but I got by. The new version 16 needs more computer and I'm adding analog pots for feed and speed. These are continuously monitored and take a lot of computer resources. And, I run mastercam on the same box. This app. needs WAY more horsepower than I got. Didn't mention it, but I plan to try a serious AGP video card to help out. |
#2
Posted to rec.crafts.metalworking
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build yer own ISA computer
On Thu, 19 Jul 2007 17:17:42 -0700, w_tom wrote:
I am somewhat confused why a faster processor is necessary. Older designs did not use interrupts. Much processor time wasted monitoring an IO port that only had useful information in (maybe) one in 10,000 IO reads. A faster processor may mean more computer cycles wasted monitoring the same port. A faster processor would mean more computer instructions wasted making other 'tasks' still appear slow. IOW I am not convinced you know why a P3 is too slow for monitoring and controlling mechanical motion. P3 should be more than fast enough. But an ISA bus is only 6 Mhz. ISA bus means system goes to idle (a wait state) for an ISA response. More CPU processing power lost waiting for I/O because an interface board is ISA. IOW I am not sure that a faster processor will make your system faster. Your bottleneck may not be processor speed. Processing restrictions may be due to various 'missing features' in hardware. On Jul 17, 11:30 am, "Karl Townsend" wrote: I use Camsoft. There is a Galil card on an ISA slot to run real time motion control. I've used a P3 for years, its been marginal but I got by. The new version 16 needs more computer and I'm adding analog pots for feed and speed. These are continuously monitored and take a lot of computer resources. And, I run mastercam on the same box. This app. needs WAY more horsepower than I got. Didn't mention it, but I plan to try a serious AGP video card to help out. It's not for the CAM (CNC) so much as th CAD (design)that he needs the power. Mastercam is a power hog. -- Posted via a free Usenet account from http://www.teranews.com |
#3
Posted to rec.crafts.metalworking
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build yer own ISA computer
On Thu, 19 Jul 2007 17:17:42 -0700, w_tom wrote:
I am somewhat confused why a faster processor is necessary. Older designs did not use interrupts. Much processor time wasted monitoring an IO port that only had useful information in (maybe) one in 10,000 IO reads. A faster processor may mean more computer cycles wasted monitoring the same port. A faster processor would mean more computer instructions wasted making other 'tasks' still appear slow. IOW I am not convinced you know why a P3 is too slow for monitoring and controlling mechanical motion. P3 should be more than fast enough. But an ISA bus is only 6 Mhz. ISA bus means system goes to idle (a wait state) for an ISA response. More CPU processing power lost waiting for I/O because an interface board is ISA. IOW I am not sure that a faster processor will make your system faster. Your bottleneck may not be processor speed. Processing restrictions may be due to various 'missing features' in hardware. On Jul 17, 11:30 am, "Karl Townsend" wrote: I use Camsoft. There is a Galil card on an ISA slot to run real time motion control. I've used a P3 for years, its been marginal but I got by. The new version 16 needs more computer and I'm adding analog pots for feed and speed. These are continuously monitored and take a lot of computer resources. And, I run mastercam on the same box. This app. needs WAY more horsepower than I got. Didn't mention it, but I plan to try a serious AGP video card to help out. OmniTurn CNC lathes run quite well with a 20MHZ cpu. www.omniturn.com Gunner This Message is guaranteed environmentally friendly Manufactured with 10% post consumer ASCII Meets all EPA regulations for clean air Using only naturally occuring fibers Use the Message with confidance. (Some settling may occure in transit.) (Best if Used before May 13, 2009) |
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