Changes
/* CSYNC */
When CRTC HSYNC is active, the Gate-Array outputs the palette colour black. If the HSYNC is set to 14 characters then black will be output for 14us.
The HSYNC is modified before being sent to the monitor. It happens 2us after the HSYNC from the CRTC and lasts 4us when HSYNC length is greater or equal to 6delayed by 2µs and will last only a maximum of 4µs.
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.
