IO PORT PROGRAMING CHALANGE

^^but then which of the 10 inputs caused the interrupt wouldn't be traceable.I think that's why Arun has ORed the inputs to the INT pin(with diodes) and simultaneously used parallel IO for tracing the source of the interrupt.

Very thoughtful Arun.

I think that is a near perfect solution for the problem i woud say by arun.

hi @ arun ,

thanks a lot .......

and ill be so thankful to u if u can post asm program here .

Sorry for late reply, was on a short trip.

Thank you SJ and Pdi33 !

caze - i'll post the asm code and schematic today


Arun

hello caze,

as promised here's my code and schematic, i have written for 8 I/Os your task is to further increase it to 10 I/Os (its easy after you go thru the code) - Enjoy !

: code deleted by Arun




i have simulated and tested the code using Ds89C430 and it works well !


Arun

wow!

how bout starting programming competetions?

I am not sure how good it will be.. but its gonna be fun..

Sure, Why not ?...............





Arun

nice idea ajay, :-)
would really tickle our old grey cells.. and help a few newcomers in many ways.
when do we start?

every competition needs a judge...
i believe we can help each other out.. for sure...
but to judge who is better wud not be that easy

wisely said shyam. :-)

hmmm, too many offtopic posts here i think.