Changes
CRTC
,/* HSYNC and VSYNC */
== HSYNC and VSYNC ==
On CPC, HSYNC and VSYNC from the CRTC are passed into the [[Gate-Array]] for further modification.
When HSYNC is active Gate-Array outputs the palette colour black. If the HSYNC is set to 14 characters then black will be output for 14us.
If R2=46, and HSYNC width is 14 then monitor hsync starts at 48 and lasts until 51.
The VSYNC is also modified before being sent to the monitor. It happens two lines* after the VSYNC from the CRTC and stay two lines (same cut rule if VSYNC is lower than 4). PAL (50Hz) does need two lines VSYNC_width, and 4us HSYNC_width.
