Simulating protected mode in the Z80 [video]
Have to upvote - just because Z80: I spend my youth programming this thing literally in hex: To program my Amstrad CPC646, I wrote down opcodes on a piece of paper and then manually translated to hex according to a copy of the Z80 spec sheet I found in the back of some book. Relative jumps were especially fun...If only I had had the internet, maybe I would have stumbled on the concept of an "assembler". Not sure if it had been more fun? In any case, I did not find the protected mode.