I only had a 16kb one and some of that memory was used for the screen etc. Almost all the game and other program listings that were in magazines were written f

I only had a 16kb one and some of that memory was used for the screen etc. Almost all the game and other program listings that were in magazines were written for the 48kb version. Consequently an early skill I picked up was typing in the programs and simultaneously editing them to take up less space. Back in those days even comments took up memory so they had to go too. I also had exactly the same experience with hand assembly. The first computer book I ever got and thoroughly enjoyed was the Spectrum ROM Disassembly which was a detailed commented list of the ROM (reverse engineered) showing how it all worked. Some folks have recreated the book: http://freestuff.grok.co.uk/rom-dis/ http://freestuff.grok.co.uk/rom-dis/