Changes
CRTC
,/* Interlace and Skew (R8) */
On all CRTCs, in both interlace modes, an additional line is added (the 625th line) at the end of the frame.
On CRTCs 1/3/4, this line is added at the end of the even framefield. On CRTCs 0/2, this line is added at the end of the odd framefield.
==== Interlace sync mode (ISM) ====
