Changes
CRTC
,/* Counter freezes */
On CRTC 0:
* setting R0 to 0 will cause numerous issues that stem from the fact that VLC is frozen. As HCC never reaches 1, the logic that increments VLC is never triggered.
* The logic that triggers vertical adjustment happens when HCC=2 on the last line of the frame. If is broken if R0<2, this test never happens.
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