Hi I am trying to compute the modulus of two numbers in assembly code. As I am more fluent in C++ it is hard for me to understand the concept of modulus as all I use is the symbol % to compute. The problem I am doing is computing the exponent of X to the Y power and then the modulus of this answer with Z. Where X, Y, and Z are one digit numbers input from the keyboard. This is what I have so far.
mov ah,1 int 21h ;input X mov bl,al ;move X to register bl mov ah,1 int 21h ;input Y mov cl,al ;move Y to register cl mov ah,1 int 21h ;input Z mov dl,al ;move Z to register dl mov al,bl ;move X back to al for multiplication loop: mul al ;multiply X to itself sub cl,1 ;decrement Y cmp cl,1 ;compare to see if Y is 1 jne loop ;if Y is greater than 1 jump to loop mod al,dl ;???MODULUS??? I know this isn't ;right, it is the part i need help with mov dl,al ;move answer to dl mov ah,2 int 21h ;ouput answer