David BALDWIN wrote:
>
> Hi,
>
>         As usual, I have some questions today... I am using the check_keys
> routine from Bob Blick. In fact, it only detects falling edges on portA.
> I am searching for a routine that could decide between a single press on
> a switch and a long press on a switch (more than 500ms or 1s). The
> reason is that I don't have so much I/O on my 16C84 and had like one
> switch to have more than one function. Can anybody help?
>
> -david

not a nice way but it worx in my app
button :        jnb     button,xxx
call    waitasecond
xxx     jnb     button,yyy
        first funtion starts
goto    button
yyy     second function starts
goto    button

as for debounce and such things

I use pullup resistor in paralell with a small cap
it worx perfectly for me

bye
charley