README.md has minimal memory map (ROM+VIA, no RAM).
README.md memory-map table reformatted / elaborated.
README minimal memory table matches main one.
README; memory / IO chip interconnect explained.
Working Arduino sketch and python client for EEPROM.
Makefile has `make burn` to write ROM.
README pins to address space cruft removed.
kernal works on actual hardware. Re-indented.

Tested with 8K segments (A13..15 into 74HC138).
README; RAM interconnect explained.
kernal.s: removed sleep loop.
kernal.s writes/reads/outputs from RAM.