Here are links to the instruction manuals for the various kits. The 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 manuals for the computer and the disk and memory kits contain listings of the v.7 and v.8 EPROMs respectively. You can download and examine code for all the CPUville kits from the Z80 code page.