Receive ASCII character through SID pin

Statement: An ASCII character is being received on SID pin of 8085. Write a program in assembly language of 8085 to assemble this character and store it in memory. Write comment for each instruction.

Source program : LXI SP, 27FFH LXI H, 2000H : Memory pointer RIM : Read SID ANI 80H : Check D7 bit of Accumulator CALL Delay : 1/2 bit time delay for stop bit MVI B, 08H : Initialize bit counter MVI D, 00H : Clear data register UP1: ALL Delay : 1 bit time RIM : Read SID line ANI 80H : Mask bits B6 - Bo ORA D : OR data bit with previous bits RRC MOV D, A : Store data bit at appropriate position DCR B JNZ UP1 RLC : Shift left to correct result MOV M, A : Store result RIM : Read stop bit ANI 8OH CZ error : If not stop bit call error HLT : Terminate program. Delay subroutine: Delay: LXI D, Count Back: DCX D MOV A, D ORA E JNZ Back RET

Flowchart for Program Flowchart for Delay routine