mov rdx, 0x2222mov rax, 0xA5push rdxcdqmov dl, alshr al, 4shl dx, 8or ax, dxand ax, 0x0F0Fchk_al:  cmp al, 0x9  jl chk_ah  add al, 7chk_ah:  cmp ah, 0x9  jl fin  add ah, 7fin:  add ax, 0x3030