Assembly language program to generate square wave in 8085

The waveforms are generated by interfacing PPI to 8086 kit and observed on CRO. Expand PPI? Where do we prefer the serial communication? What is the function of instruction pointer (IP) register?

Write 8085 Assembly language program to generate continuous square wave. To generate square wave with 8085
We will rotate 10101010 (AAH) continuously. We have to send D 0 as output. We will mask the accumulator content by 01H. If this is 0
Then output will be 0
If it is 1
Output will be 1Thus the pulse will be generated.

Problem – Write a program to generate continuous square wave. Use D 0 bit to output the square wave. The required waveform is:
The alternate pattern of 0/1 bits can be provided by loading the accumulator with AAH (10101010) and rotating the pattern once through each loop. Bit D 0 of the output port is used to proved logic 0 and 1.