Recent content by GOW insane

i want to check if either the "up" or "down" key has been pressed on the keyboard. what i though it would be: mov ah,01;get a keystroke int 21 mov bh,al cmp bh,50h je up cmp bh,48h je down jmp mainloop don't know if 50 and 48 are the right numbers when comparing. do they have to be in hex...