Hi folks, Still working on this STC Executel and it looks like the CPU isn't too good given how hot it gets within a minute or so. The display is the same whether there's a CPU physically present or not. I built this circuit to test it:
http://saundby.com/electronics/8085/freerun.shtml Using a 4mhz crystal the address lines are all over the place - I'm using a logic analyser rather than LEDs. Has anyone got a spare they'd like to sell me? I'm struggling to think of something I've got that may have a socketed 8085... -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?