Tom Jennings did something similar which only goes up through ASCII: http://www.wps.com/J/codes/
You might also know Tom Jennings from having created Fidonet and having written the BIOS which became the basis for Phoenix Technologies BIOS.
You might also know Tom Jennings from having created Fidonet and having written the BIOS which became the basis for Phoenix Technologies BIOS.
Everything else he's far more detailed!