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CRTC

No change in size, 13 May
/* ASIC/Pre-ASIC and R10/R11 */
All the other bits read as 0 and don't have any function.
=== R10/R11 on ASIC/Pre-ASIC and R10/R11 ===
The cursor raster registers R10/R11 act as status registers when read on Types 3 & 4. They behave as normal cursor raster registers upon write.
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