My newly acquired Apple II europlus was missing the 16kbytes "Language Card", so I decided to make my own version of the card, using only standard logic chips and static RAMs.
There's also a little 6502 machine language programming using the Apple ][ built-in monitor.
Apple language card schematic:
[ Ссылка ]
User manual:
[ Ссылка ]
Ещё видео!