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Divide a 16 bit number by a 8-bit number

Statement: Divide 16 bit number stored in memory locations 2200H and 2201H by the 8 bit number stored at memory location 2202H. Store the quotient in memory locations 2300H and 2301H and remainder in memory locations 2302H and 2303H.

Sample problem 1:

(2200H) = 60H

(2201H) = A0H

(2202H) = l2H

Result = A060H/12H = 8E8H Quotient and 10H remainder

(2300H) = E8H

(2301H) = 08H

(2302H= 10H

(2303H) 00H

Source program :

LHLD 2200H : Get the dividend
LDA 2202H : Get the divisor
MOV C, A
LXI D, 0000H : Quotient = 0
BACK: MOV A, L
SUB C : Subtract divisor
MOV L, A : Save partial result
JNC SKIP : if CY 1 jump
DCR H : Subtract borrow of previous subtraction
SKIP: INX D : Increment quotient
MOV A, H
CPI, 00 : Check if dividend < divisor
JNZ BACK : if no repeat
MOV A, L
CMP C
JNC BACK
SHLD 2302H : Store the remainder
XCHG
SHLD 2300H : Store the quotient
HLT : Terminate program execution

Flowchart for program

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Divide a 16 bit number by a 8-bit number