NOP test boards

A slection of NOP processor test board projects from silicon-ark.

These boards make the CPU execute the NOP command (No Operation). The address lines can be observed with the aid of eight LEDs.

If the CPU executes the NOPs, the addresses should be continuously incremented, until all LEDs are lit. The cycle will then repeat.

The NOP test is very basic and indicates that the CPU is working or not working.  It does not indicate any performance issues.