Changes
CRTC
,/* DISPTMG (aka Display Enable) */
While border is active, all the CRTC counters continue to increment normally and addresses continue to be generated.
The DISPTMG signal is composited from its 3 internal subcomponents: HBORDER (Horizontal), VBORDER (Vertical), IBORDER SBORDER (InstantSplit) by using the NOR function. DISPTMG is "0" if at least one of its subcomponents is "1". These 3 subcomponents are all independent of each other.
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