89c51 port epansion with 8255 keil c

I just found a more recent source code which isnt mine which uses the commands u used. They only work with the recent versions of Keil (after Microsoft bought Keil) because i have an older version and...
89c51 port epansion with 8255 keil c

I just found a more recent source code which isnt mine which uses the commands u used. They only work with the recent versions of Keil (after Microsoft bought Keil) because i have an older version and...
Re: 89c51 port epansion with 8255 keil c

we had a good discussion abt 8255 ports and pins . thanks friends. but i have found the shortest way for solving my fundamental problem. and that is--> to use the switches in matrix form. i can use...
Re: 89c51 port epansion with 8255 keil c

we had a good discussion abt 8255 ports and pins . thanks friends. but i have found the shortest way for solving my fundamental problem. and that is--> to use the switches in matrix form. i can use...
Writing to 8255 Ports using xdata

Hi,I'm using 8051 microcontroller and am new to c51 coding.Somebody pls help me how to write to 8255 using c. Thanks, lina