OSDev.org

Ok, I was learning that one tutorial, http://www.mega-tokyo.com/forum/index.p ... 31;start=0
and for me the printreg16 function didn't work properly. For some reason, the function prints '0F4C', or something else(reg16 is always 0). What's the problem?

The function prints the value of AX in hex.
so if you copied the function correctly that's probably the value in AX when you call the function. In the example it should be '0F57'.
(it print the value of the top left char on the screen)

'0F4C' should be 'N', so check if 'N' was the char on the top left of your screen.

Oh, stupid me.. I put ax value to reg16 and then use reg16. I just didn't notice that