[Coco] Questions about the Coco3 GIME Timer

[jdaggett at gate.net]

On 14 Feb 2007 at 9:30, Gene Heskett wrote:

> 
> The point is, that to drive a milling machine, we would need one of
> these per axis being moved.  That's at least 2 just to cut circuit
> boards...
> 
> -- 
> Cheers, Gene


Gene 

ever considered using a CPLD and programming it to have the three counters 
you need. You can have the timers generate a flag when count is up. The the 
program can poll the memory mapped register file or have the GIME timer tell 
you when it is time to read the counter status. 

The CPLD program would be rather simple to do and rather inexpensive add on 
board. The counters could be driven by the E clock and each counter could have 
a prescalar to a 16 bit free running counter.


james