I was finalising the design of my first I/O Card for the Minimalist Europe Card Bus (MECB).
I needed a driver circuit for a single connection to an Interrupt input on the Bus, so I thought I’d look at some options for connecting a positive logic signal to the active low Interrupt input on our retro TTL level system Bus.
Join me as I compare the traditional 7406 Open Collector Hex Invertor solution, to some more compact and less wasteful solutions.
You can find the full post and video here: Retro CPU Interrupts – Driver Options