Just a quick code like putting your keyboard where your brain is. There should be another way of doing this. I hate this code. start: xor al, al xor bl, bl xor cl, cl mov dl, 4 ; use dl as counter input: mov ah, 00 int 16h cmp ah, 1ch je exit cmp al, '0' jb input cmp al, '1' ja input convert: mov cl, dl dec cl ; dl - 1 sub al, 30h ; get original value shl al, cl ; place in the appropriate bit position or bl, al ; save in bl dec dl ; prepare for the next bit jnz input ; must be 4 bits cmp bl, 9 ja letter jbe number letter: add bl, 37h ; because 'A' - 37h is 0Ah jmp here number: add bl, 30h ; because '0' - 30h is 00h here: call display jmp start display: mov ah, 02h ...
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