This is a demonstration of a new version 15 ROM for the CPUville Single-board Z80 computer with the bus display. This ROM combines some features of the v.7 ROM that came with the CPUville Original Z80 computer, and the v.8 ROM that comes with the Single-board computer. It has some simple demonstration programs like the v.7 ROM, but also has a system monitor with routines to use the disk, and to start CP/M.
