VDP1 Update

Quick update on VDP1:

- Replaced ‘mkmsk’ with ‘zext’ where possible
- Added VDP_CONTROL register to enable / disabled things
- Added HSRAM support for BG0/1, allowing you to scroll each background on a per line basis.
- Redefined some registers to be more consistent ( SPRITE / TILE )

The updated core is available here:

VDP1

Time permitting, I’ll see if I can knock-up a ‘proper’ sine-wave demo