Thanks again Andy.  It worked.

Even thought my speed control (mc-60) is cheap 
and low-tech, I am able to make the speed track 
better than  +/- 5%  from 20 to 1200 rpm under 
reasonable thread cutting loads.  That ain't bad for recycled junk.

This exercise with the 5i25 and 7i78 has forced 
me to get a whole lot deeper into understanding 
the concepts and syntax involved in hm2 and hal.

That is a good...but sometimes humbling... thing.

Cecil

At 10:54 AM 1/2/2017, you wrote:
>On 2 January 2017 at 15:47, andy pugh 
><bodge...@gmail.com> wrote: > There is a 
>slightly better set of docs here: > 
>http://linuxcnc.org/docs/devel/html/drivers/hostmot2.html  
> > But it is very much out-of date. One way in 
>which is is out of date is in insisting that 
>only step-dir mode is supported by the driver, 
>whereas it is now possible to use all the modes 
>up to and including a 6-pin 16-step table 
>generated mode. -- atp "A motorcycle is a 
>bicycle with a pandemonium attachment and is 
>designed for the especial use of mechanical 
>geniuses, daredevils and lunatics." — George 
>Fitch, Atlanta Constitution Newspaper, 1916 
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