My 338 emulator is working to the point where I can push objects around the screen with the 'light pen'. https://youtu.be/lydGoE-JbIg I am looking for software to test the emulation; I thought that the DECUS kaleidoscope program was available, but all I can find is catalog references. There is a ' 338INSTRUCTIONTEST.BIN' out there, but none of the BIN loaders I have tried recognize it. The PDP-8 versions of space war all use a different graphics system, so are not helpful. Anyone have any 338 diagnostic or applications stashed away somewhere? -- Charles