Counting

1. Program to find number of 1's and 0's in a given 8-bit number.The number is stored at memory location 5001H. Store the count of 1's & 0's at 5002H & 5003H.

	;<Program to find number of 1's and 0's in a given 8-bit number.
	;The number is stored at memory location 5001H. Store the count of
	;1's & 0's at 5002H & 5003H>
	jmp start
	;code
	start: lda 5001H
	mvi b,00H
	mvi c,08H
	loop: rlc
	jnc skip
	inr b
	skip: dcr c
	jnz loop
	mov a,b
	sta 5002H
	mvi a,08H
	sub b
	sta 5003H
	hlt

view raw bits_count.asm hosted with ❤ by GitHub

Screenshot before counting. See the content of memory location 5001H.

Screenshot of  result. See the content of memory location 5001H(number), 5002(no. of 1's) and 5003H(no. of 0's).

2.Program to find number of positive and negative numbers in an given array. The length of array is given at 5000H and the array is stored from 5001H.

	;<Program to find number of positive and negative numbers in an given
	; array. The length of array is given at 5000H and the array is stored
	; from 5001H>
	jmp start
	;code
	start: lda 5000H
	mov b,a
	mvi c,00H ; count for positive numbers
	mvi d,00H ; count for negative numbers
	lxi h,5001H
	loop: mov a,m
	cpi 80H
	jnc pos1
	inr c
	jmp pos2
	pos1: inr d
	pos2: inx h
	dcr b
	jnz loop
	mov a,c
	sta 6001H
	mov a,d
	sta 6002H
	hlt

view raw count_positive_negative.asm hosted with ❤ by GitHub

 Screenshot before counting. See the contents from memory location 5000H.

 Screenshot of  result. See the contents from memory location 5001H.