Just want to say thanks for this! The build was pretty easy, other than putting the LED 595 sockets in backwards and finding out after I noticed the heatsinks were almost glowing red. No harm done though. Caught it in time. The 595's still work. Anyway, the Optrex LCD is amazing! I have one on my Ambika and aside from OLED, those are the best displays I've seen. The only bummer is one of my 6581's I lifted from a C64 I found for $5 at a thrift store about 8 years ago is bad. OSC 1 is not