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Write a program to multiply two 8 bit signed numbers using 8085 microprocessor?
Wiki User
∙ 11y ago
s v i e t k a n u r u .t k
MULTIPLICATION OF TWO 8 -- BIT NUMBERS
AIM:
To perform multiplication of two 8 -- bit numbers using 8051 instruction set.
ALGORITHM:
1.
Get the data in A -- reg.2.
Get the value to be multiplied in B -- reg.3.
Multiply the two data4.
The higher order of the result is in B -- reg.5.
The lower order of the result is in A -- reg.6.
Store the results.
PROGRAM:
ORG 4100CLR CMOV A,#data1MOV B,#data2MUL ABMOV DPTR,#4500MOVX @DPTR,AINC DPTR MOV A,BMOVX @DPTR,AHERE: SJMP HERE
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoMVI E, 00 : Quotient = 0
LHLD 2200H : Get dividend
LDA 2300 : Get divisor
MOV B, A : Storedivisor
MVI C, 08 : Count = 8
NEXT: DAD H : Dividend = Dividend x 2
MOV A, E
RLC
MOV E, A : Quotient = Quotient x 2
MOV A, H
SUB B : Is most significant byte of Dividend > divisor
JC SKIP : No, go to Next step
MOV H, A : Yes, subtract divisor
INR E : and Quotient = Quotient + 1
SKIP:DCR C : Count = Count - 1
JNZ NEXT : Is count =0 repeat
MOV A, E
STA 2401H : Store Quotient
Mov A, H
STA 2410H : Store remainder
HLT
Wiki User
∙ 11y agoLhld 2000h
sphl
lhld 3000h
xchg
lxi h,0000h
lxi b,0000h
next: dad sp
jnc ahead
inx b
ahead: dcx d
mov a,e
ora d
jnz next
shld 2008h
mov l,c
mov h,b
shld 200ah
hlt
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