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        mb_al   = buffer_len and 0xff
        mb_ah   = buffer_len shr 8
        xor     eax, eax
        if      mb_al > 0 & mb_ah > 0
          mov   ax, buffer_len
        else if mb_al > 0 & mb_ah = 0
          mov   ah, mb_al
        else if mb_al = 0 & mb_ah > 0
          mov   ah, mb_ah
        end if
        mov     ebp, esp
        add     ebp, ecode - Begin

        mb_al   = buffer_len and 0xff
        mb_ah   = buffer_len shr 8
        xor     eax, eax
        if      mb_al > 0 & mb_ah > 0
          mov   ax, buffer_len
        else if mb_al > 0 & mb_ah = 0
          mov   ah, mb_al
        else if mb_al = 0 & mb_ah > 0
          mov   ah, mb_ah
        end if
        sub     esp, eax
        mov     ebp, esp
        add     ebp, ecode - Begin

        mov     ebp, esp
        add     ebp, ecode - Begin

        lea     ebp, [esp + ecode - Begin]

end_of_shell_code = $
rb end_of_shell_code
repeat end_of_shell_code
  load xxx byte from end_of_shell_code - %
  xx1 = (xxx and 0xF) + '0'
  xx2 = (xxx shr 4) + '0'
  if xx1 > '9'
    xx1 = xx1 - '9' + 'A'
  end if
  if xx2 > '9'
    xx2 = xx2 - '9' + 'A' - 1
  end if
  store word xx2 + (xx1 shl 8) at (end_of_shell_code - %) shl 1
end repeat