Hardware
Bits and highlights (index):
5
8How to build your own ZX80/ZX81 and how it works:
Creating a highly-integrated open-source laptop from scratch
Investigating an "evil" RJ45 dongle
Reverse-engineering hardware can be difficult -- but sometimes, all you need is a comfy armchair and some Google Translate.
https://lcamtuf.substack.com/p/investigating-an-evil-rj45-dongle