Question

Write an Assembly Language Program to find the sum of ten hex numbers stored in consecutive memory locations starting from 4000 II. Store the two-byte result at the end of the block beginning with a lower byte.

Answer 1

Label	Mnemonics and Ope	Comments
LOOP:	LXI H, 4000 H	; Set HL with 4000 H
	MOI C, 10H	; Set C reg. with 10 H
	MVI A, 00H	; Store A with 00
	MVI B, 00H	; Store B with 00
	ADD M	; Add mem. with Acc.
	JNC next	; if c y = 0 go to next
	INR B	; Incr. B b y 1
next:	INX H	; Increment HL b y 1
	DCR C	; Decrement C by 1
	JNZ LOOP	; if Z ≠ 0 go to LOOP
	INX H	; Increment HL b y 1
	MOV M, A	; Copy contents of A to M reg
	INX H	; Increment HL b y 1
	RST 1	; Restart