I want to thank Todd for his excellent support in helping me diagnose the issues with the C64 I purchased at Festivus. We used the dead test cartridge to identify suspect RAM, then a logic probe to check the levels on those chips. He desoldered and resocketed them and the machine booted to Basic. Also, Jeff gave me some leads on where to find equipment for the machine. I was able to plan my VCF exhibit, which will teach people the basics of how to program a Replica 1 Plus by typing in hex codes to make it print their name. Or people can play Microchess with a Kim Uno or run programs on the Replica 1+. I got the Replica 1 Plus to use a Raspberry Pi as a serial terminal, so that gives it a nice small footprint. I also got Plamen's Passport MIDI card (a2heaven.com) to work in a GS by routing wires through the back panel to midi sockets on a breadboard. I also built a 6522 chip tester using an Arduino Mega and Data Logger shield - I soldered a ZIF socket to a PCB with ribbon cable jumpers going to the pins. I had previously worked on the test harness software, which can be seen at https://github.com/erangell/RMChipTester This will help Henry C. identify bad chips from suppliers. I still need to write more test scripts, so if anyone is willing to help let me know. At the end of the day I watched David G. give a fun demo of the PDP8 in the museum. He showed us how to enter the boot code and read and run programs from paper tape. Conceptually it all fits with my understanding of how computers execute code - the only differences I see are the hardware and the machine instruction set. Thanks to all of you for your friendship and support - it means a lot to me. Eric Rangell