> I have horrible flashbacks remembering a time when I spent a couple of hours typing in row upon row of hexadecimal (plus CRC check code for each line!) from t

> I have horrible flashbacks remembering a time when I spent a couple of hours typing in row upon row of hexadecimal (plus CRC check code for each line!) from the pages of a magazine to get a Space Invader type game on the ZX81. And then the RAM Pack crashed the machine before I could save to cassette tape - BOOM! This. And the other horrible one. Typing in hundreds of lines of hex only to realize there was a digit you either typed wrong or was wrong in the listing, so when you ran the code it just froze.