Running tests on our first PCB, this is 8 x 8bit registers. We have a register write bus and two register output buses. All done using TTL Logic and LEDs for blinky goodness Running around 20hz so you can see the LEDs blinking. Being driven by an arduino micro for testing purposes. We've managed to get 13Khz clock speed, but then we hit the limit of the arduino speed.

We have a blog - https://pj5cpu.wordpress.com/

#TTLCPU #GeekChic #PJ5