[sdiy] simple TTL programmable counter question (74LS163)

[Michael Buchstaller]

>> http://www.cgs.synth.net/modules/cgs20_dco.html
>
>No, you where using 193 and not either of 161 or 163s.

Yes, but i built Ken´s circuit just to see it, and it worked immediately !
So i suspect some fault in my handling of the 163.

>I agree, for those speeds I would use a small CPLD or FPGA today. Cheap and
>fairly easy to get the intended performance.

Good point. But before i go deeper into learning VHDL, building or buying a programmer
and so on, i would prefer good old TTL logic for such simple stuff.
Especially if there are no really high frequencies involved. The 100 MHz will be divided down
to less than 16 MHz after the first counter, and i even do not use it´s output. So i can get away
without too much RF headaches (at least i hope so)

>Well, some of us do spend time over analog simulations, so why not do the same
>for digital designs?

Yes, sure you are right. But in life there is only so much time, and some other things
(like work, the wife, my parrots and so on) need their fair share of time, too.
So many ideas, so less time for them...


-Michael Buchstaller