#zx81 #sinclair #retro #retrogames #8bit

My first ZX81 and channel donation, A Big thanks to my old school friend Stephan and his dad for dropping this over, I am so happy that I have it working again.

In this video I take a look at this very unique zx81 with DK Tronics keyboard and Memotech Memopak 16k memory upgrade.

00:00 intro 01:11 first look 05:29 installing a Composite mod 08:20 Checking the keyboard 10:17 Diagnosing the keyboard problem 15:07 Installing another ULA 18:52 Memotech Memopak 16k expansion 21:37 More testing and Loading From Tape 30:50 Thoughts and summery

A big thanks to Lee for the loaner ZX81 https://www.youtube.com/c/MoreFunMakingIt

The Comp mod I used https://github.com/redhawk668/ZX81-Composite

Mono Jacks on Amazon https://amzn.to/3yEn0uG

My Patreon https://www.patreon.com/leesmithsworkshop

and my 3d Print webstore https://leesmithsworkshop.co.uk/