Changes
CRTC
,Minor adjustments; some incorrect apostrophes, and minor other things.
The '''CRTC''' (Cathode Ray Tube Controller) helps to generate the video signal of the Amstrad CPC.
NOTE: This document describes the functionality in terms of the CPC with it's its separate CRTC and Gate-Array. The Plus has both integrated into the same IC, but could be considered to have 2 two functional blocks, one for CRTC and one for Gate-Array. In this document the term 'Gate-Array ' is used, but this also applies to the ASIC.
== Overview ==
R31 is described in the UM6845R documentation as "Dummy Register".
In the UM6845R it appears to have no effect. Reading and writing does nothing. Reading it returns 0x0ff.
