Rather than use a microcontroller to run the relay, [glitch] wrote a simple Ruby script on his computer to turn the EPROM eraser on for the precise amount of time that is required to erase the ...

Set the "T" switch on the shelf next to the programmer to your computer. There is a fan underneath the EMP-20 programmer that must have proper clearance to prevent overheating. Please make sure all ...

Maybe that’s why you can still get Z80-derived chips readily. There was one thing, though, you needed an EPROM or some other way to run some initial code to bootstrap your system. Zilog knew ...