pouët.net

midline by Desire [web]

Midline
-
256-byte Intro for Apple IIe, Outline 2023
by Deater / dSr

Cycle-count and midline mode switching 
between text, hi-res, and lo-res midscreen.

Only works on Apple IIe models of Apple II
because it uses that model's specific way
of VBLANK detection that doesn't work on
other models