Originally Posted by gizmomelb
COPPER video timing display is 8 bits, so maximum of 256 possible values.
Only because there is not enough free bits in Copper's WAIT and SKIP-instructions.
Vertical counter VPOSR+VHPOSR is 9-bit (OCS) or 11-bit (ECS and AGA)
btw, in analog video signal there are no "real" horizontal pixels. 400 or so horizontals pixels without blurring is the best regular CRT-based televisions can do.