Changes
CRTC
,/* Register access */
=== Register access ===
On all CRTCs 0/1/2, only the 5 least significant bits of the selected register number are considered to read write to a register. The other bits are ignored. On CRTCs 0/1/2, only the 5 least significant bits of the selected register number are considered to read a register.
On CRTCs 0/2, registers 18-31 read as 0.