Here are links to the instruction manuals for the various kits. The Original Computer Kit instructions has the instructions for the bus display and logic probe kits. Look over the instruction manuals to get complete information about the kits before you buy. The instruction manual for the original computer kit has a listing of the v.7 EPROM, and the instruction manuals for the disk and memory kit and the single-board kit both have a listing of the v.8 EPROM. You can download and examine code for all the CPUville kits from the Z80 code page.