How do I print an integer in Assembly Level Programming without printf from the c library?

Question

Can anyone tell me the purely assembly code for displaying the value in a register in decimal format? Please don\'t suggest using the printf hack and then compile w

Answer 1

Can't comment so I post reply this way. @Ira Baxter, perfect answer I just want to add that you don't need to divide 10 times as you posted that you set register cx to value 10. Just divide number in ax until "ax==0"

loop1: call dividebyten
       ...
       cmp ax,0
       jnz loop1

You also have to store how many digits was there in original number.

       mov cx,0
loop1: call dividebyten
       inc cx

Anyway you Ira Baxter helped me there is just few ways how to optimize code :)

This is not only about optimization but also formatting. When you want to print number 54 you want print 54 not 0000000054 :)