8086 ASSEMBLY CODE FOR SIMPLE MULTIPLICATION OF TWO 32 BIT NUMBERS

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;;MSB OF RESULT IN BX REGISTER AND LSB IN AX ;;REGISTER
DATA SEGMENT
INST DW 0FF01H,0ACFH  
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

Comments

  1. UnknownOctober 9, 2013 at 6:09 AM

    could u explain this?

    ReplyDelete
  2. UnknownApril 6, 2022 at 10:55 AM

    You have given program for multiplication of two 16 bit numbers NOT two 32 bit numbers. If you use MUL instruction the program will be simpler

    ReplyDelete

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