assembly program to find the smallest among two numbers

assembly 8085
Parimal Raj picture Parimal Raj · Dec 20, 2012 · Viewed 13.8k times · Source

how do i assembly program to find the smallest among two numbers.

assuming that first number is located a memory address : 0x2001 second number is located a memory address : 0x2002

store the smaller number in Accumulator

Here is what i attempted :

LDA 0x2001
MOV B, A
LDA 0x2002
CMP B
JNC smaller
exit
smaller :
MOV A, B
exit : HLT

is my solution correct?

Answer

Parimal Raj picture Parimal Raj · Dec 20, 2012 
XRA             ; clear the accumulator
MVI B, 30H      ; load a number to B Register
MVI C, 40H      ; load a number to C Register
MOV A, B        ; Move the content of B to A
CMP C           ; Compare value of C against A
JNC SMALL       ; Jump if smaller
**JMP END**         ; Halt program if not small
SMALL: MOV A, C ; save smaller num in accumulator
**END: HLT**

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