HTOTAL
Address Name Description
DFF1C0 HTOTAL Highest colour clock count in horizontal line

Overview

Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
0 0 0 0 0 0 0 0 H8 H7 H6 H5 H4 H3 H2 H1

Horizontal line has these many + 1 280nS increments. If the pal bit &
LOLDIS are not high, long line/short line toggle will occur, and
there will be this many +2 every other line.
Active if VARBEAMEN=1 or DUAL+1.

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