The MASM Forum Archive 2004 to 2012

Im new to assembly and having lots of issues:

i have to make a program that subtracts 3 integers using only 16-bit registers and display it using a function or procedure (idk the difference in assembly) that only displays 32-bit registers and the flags.....

Thanks to whoever helps me out

let's say you have result in ax. just zero extend to eax with 'movzx eax, ax' then you can display eax. zero extend puts the value of smaller source operand into larger destination one. the new bytes are zeroed

        print right$(uhex$(eax),2)

will display AL

        print left$(right$(uhex$(eax),4),2)

will display AH

        print right$(uhex$(eax),4)

will display AX

I tried to use the movzx eax,ax but it gives me an error: instruction operands must be the same size

nvm it worked thanx!!