W65C265S: Shell Buildout - User Input, Basic Commands

https://www.rehsdonline.com/post/429e1970-188b-4ea5-bea3-77fdf6d4aba7/edit https://github.com/rehsd/microcontollers/tree/main/W65C265S/Primary%20AV%20Boards/65265%20assembly%20FULL%20Shell%20input%20basic%20cmds