8255

Please download the code + schematic from the download section.
go to: 8051 codes
if you find any problem please post it in the forum.

Excellent work rickey!
just i request u to do one thing
try to blink port a ,port b,portc or any one port so that we get an idea to use the port pins !

the code contain the program to bink PC.7 see it.

please reffer to the datasheet of 8255 for more information on ports and other stuff!

thanks rickey for u r schematic i will surely try to assemble it
thanks once again

you are welcome. if you want anymore help on this.. feel free to post.

rickey i was going through ur library of i2c and uart,24c16
they r really interesting and i am looking forward to use them but i want apprpriate schematic and help to implement them
i really appericiate ur work!
if u can help me it will be a pleasure for me !
regarding 8255 its in the process now soon i will give u its result if u can include i2c and uart in the same schematic it will be great then!

you can do that.. there is nothing to add just two pins any two pins can be used. and.. for I2C communication. you can take a look at the clock project and see how it is connected. and we will try our best to help you out.