We get that almost daily, why do so many insist on using this antique?

Since they don't have access to state of the art FPGAs and CPLDs. People like to use what they can easily get, and there is someone to guide them. Most of them are students, hobbyists.. So they also can't afford the development tools.


Ritesh,

What I can see from your code is that you are flashing an LED (I am guessing) when you receive an interrupt. Am I right?

I don't see any SETB IT0 instruction to make EX0 interrupt as an edge triggered.