A2osX is a cooperative, event-driven multitasking kernel (meaning it is applications that are responsible to give back control to kernel). Its principal goal is to collect all “genius” 65c02 pieces of code ever written here and there, concentrated in the same environment (including IP Stack & HTTPD/TELNETD…, GUI & graphical tools…). “Complete working place”, no needing any more to reboot to switch between tons of diskettes!
A2osX is designed to work on any “stock” 128k Apple //e, with no additional hardware.
The Apple II turned 40 this year and it still has a lot of life left in it.