When I was 12 - probably a few years before you - I didn't have a dot matrix printer so I wrote out the entire disassembly of the Vic-20 ROM in school exercise books.
That took the first few days of the 1983 summer holidays.
The rest of the holiday was spent happily analysing it and annotating my source code, figuring out how BASIC worked, including the floating point routines.
That took the first few days of the 1983 summer holidays.
The rest of the holiday was spent happily analysing it and annotating my source code, figuring out how BASIC worked, including the floating point routines.