Address Name Description
DFF1CC VBSTRT Vertical line for VBLANK start
DFF1CE VBSTOP Vertical line for VBLANK stop


(V10-0 <- D10-0) Affects CSY pin if BLAKEN=1 and VSY pin
if CSCBEN=1 (see BEAMCON0)

This material is most likely derived from the official Amiga documentation and where applicable copyright remains with the original author.