cmg...@sover.net wrote: > Ahh > > An interpreter tucked in hostmot?
No, hostmot2 is way simpler than that. The interpreter eats G-code and emits a sequence of waypoints (sort of). The hostmot2 driver takes in those waypoints and commands the FPGA to step (or run the servo) appropriately to attain the waypoints. >> cmg...@sover.net wrote: >>> Can you (or any others) tutor (Or point to some reference reading) on >>> how the the hardware and firmware of these Mesa boards can provide step >>> pulses "faster" than the parallel port? My simple mind says "the board >>> needs the step commands first, how can it direct the motors if it is >>> still waiting for it's own commands". >> The trick is this: the command from emc2 to the 7i43 (or 5i20, or ...) >> is *not* "take a step", it's "keep stepping *at* *this* *rate* until i >> tell you otherwise". >> >> If you're familiar with the emc2 thread architecture, think of it as >> running the base thread on the FPGA. -- Sebastian Kuzminsky ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
