Re: Back in the day
Suggesting the PDP-11 is "very old" is making me feel old! When I started working on them they had been around for a while though I guess.
We had one course at Uni that was done with pure hand converted machine code on LSI-11 boxes (essentially PDP-11 without the peripherals). I think it was included to give us an understanding of the background rather than in the expectation we would even need to do this professionally. Back then I could count in Octal as well as Decimal & Hex.
Being young and stupid I also did a reasonable amount of this on the Sinclair machines (REM statement in the first line(s) of the program to create the space then Poke the 2-byte instructions in).
Glen