- In science fiction movies and TV, asteroids form a vast, hyperkinetic, obstacle-strewn Death Course: Enormous rocks spin like tops and whiz around all over the place, frequently even smashing into each other. Trying to navigate one is like asking a chicken to cross a busy Los Angeles freeway during rush hour: Small nimble spacecraft flown by skillful Ace Pilots (i.e, the protagonists) may be able to slalom through without getting reduced to space dust, but any pursuing enemy fighter ships will get picked off one-by-one by giant, malevolent space boulders. Any capital ship who can’t just blast a path through them with its Wave Motion Gun will have to rely on their Deflector Shields to bounce the rocks off.
- Reverse-engineering the Z-80: the silicon for two interesting gates explained (righto.com)
I’ve been reverse-engineering the Z-80 processor, using images from the Visual 6502 team. One interesting thing about the Z-80’s silicon is it uses complex gates with multiple inputs and multiple levels of logic. It also implements an XOR gate with an unusual pass-transistor circuit. I thought it would be interesting to examine these gates at the silicon level and show how they work.