Avoids constant comparison against wx by cmputing the initial windows index.

By avoiding many of the GBC required operations in the drawing pipeline.

This is only a structure change and no real DMA implementation has been done.

Thsi avoids possible overflow issues.

The performance should be poor as there're lots of if clauses.

Including CGB and DMG.

This is a temporary hack until a real speed switch is available.

By computing only the color associated with the byte in question.
This avoid computation that was not required.

The double speed mode is still not available.

Allows usage of tiles from multiple VRAM banks.

Created more panic conditions for the KEY0 and KEY1.

This dependency was creating issues with clap>=4.