SVS improved his memory map for the Commodore C16, C116 and the Plus/4. This .xls file is a very comprehensive description of the 264 models. Changes in this version: PETSCII codes with CBM+key codes. New tables and command modes for RS232. More information about: ACIA registers, banking routines, OS96, LOAD routines, functions keys, monitor commands and the RT clock.
Website: http://plus4world.powweb.com