I try to gauge the complexity of a task like this with a period view. On the one hand, BASIC was quite simple, and the 8-bit CPU had an instruction set that could be easily memorized (days before protected mode and 64 bytes worth of potential extended instruction decode prefixes!). On the other hand, debugging, code entry and documentation was sparse. (And there was no Stack Overflow.) So when I think to myself: How hard was this task compared to my for-fun projects? I really don't know what to think in today's inflationary terms. Thoughts?