Ahh

An interpreter tucked in  hostmot?




Cal

> 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
>
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