Using the monochrome Maimite BASIC computer to power a portable diagnostic tool with expandable modules.
The availability of 4" monochrome CRT modules on ebay have enables the addition of a complete composite screen. The use of an LCD module on the Maximite uses far too many of the IO pins.
The input is planned to be a 4X4 industrial backlit keyboard using cording to type aphlphabetic characters.
Details
Great thanks to https://cmm2.fun/ for some programming ideas and basis of my menu code.