Write a main program in INTEL 8085 microprocessor to count continuously in binary with a one second delay between each count?

Answer 1

To create a main program in the Intel 8085 microprocessor that counts continuously in binary with a one-second delay between each count, you can use the following code:

START:  LXI H, 0000H  ; Initialize register pair HL to 0000
        INX H          ; Increment HL
        CALL DELAY     ; Call delay subroutine for 1 second
        JMP START      ; Repeat the process

DELAY:  MVI C, 0FFH    ; Load C with 255
D1:     MVI B, 0FFH    ; Load B with 255
D2:     DCR B          ; Decrement B
        JNZ D2         ; Loop until B becomes 0
        DCR C          ; Decrement C
        JNZ D1         ; Loop until C becomes 0
        RET             ; Return from delay

This program initializes a counter, increments it continuously, and calls a delay subroutine that creates a delay of approximately one second using nested loops.