Digital clock using RTC IC and 89S52

yes sir, i can see the welcome msg on LCD Screen.

as per flow of program after that it should display the time clock but its not coming thats why i have written "nothing is updated.."

Sir, i am not geting what you want to say in this line.

move stack to 50H.. 2F is not a good option..

can you tell me little bit in detail please..???

ok tell me.. after welcome message any of keys working? if not then you must change the value of stack pointer.

change it to 50H, sometimes.. your data overwrite the stack data then unknown jump occurs which create problems..

but sir 50H is starting Address for my main Loop.

ORG 0050H
MAIN: MOV A, #00H

how can i apply same add. to SP which is already applied to main?

thanks for replying

Stack pointer is located in RAM not ROM so do not worry...

ok sir...
let me check it...

Thank you..