Hi there,
as we regularly discuss video solutions it seems, I think I'd post my video with a deep analysis of the Commodore PET video with discrete logic video circuits.
https://youtu.be/pwb5GvmoAFEI think it's actually quite ingenious, reducing hardware reqs a lot my reusing counters and cleverly reducing logic terms when checking bounds.
Does anyone know if there is a similar analysis of the Apple ii video?
André
_________________
Author of the GeckOS multitasking operating system, the usb65 stack, designer of the Micro-PET and many more 6502 content:
http://6502.org/users/andre/