Something

ascii { 
  window -l -t15,30 @ASCII -1 -1 400 300 
  aline @ascii Character $+ $chr(9) $+ ASCII value $+ $chr(9) $+ Alt+
  VAR %a = 32 
  WHILE (%a <= 255) { 
    aline @ascii $chr(%a) $+ $chr(9) $+ %a $+ $chr(9) $+ $base(%a,10,10,4) 
    INC %a 
  } 
}
; put this in aliases and then type /ascii