Write a program in assembler for an up8086 ACM86 to perform

Write a program in assembler for an up8086 (ACM\'86) to perform double-precision multiplication.

Solution

DATA SEGMENT
INST DW 0FE00H,0AADH
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START:
MOV AX,DATA
MOV DS,AX   
LEA SI,INST
MOV CX,[SI]
MOV AX,0000   
ADD AX,[SI+2]   
JNC DOWN
INC BX
DOWN:LOOP UP
INT 3
CODE ENDS
END START
END