Firmware 2.2

Fix sprite-background-sprite priority handling.
Overall more accurate VIC emulation.

It is now in a state where it can probably show all games and many demos without glitches. Only the most crazy demos (in the category of Edge of Disgrace) still have some issues. I hope I can fix this eventually.

Firmware 2.1

Improved VIC emulation.
Timing of hsync and vsync now exactly as done by the VIC.

Firmware 2.0

Color palette can be reprogrammed to any values, even to RGB color space.
Compatibility with Ultimate II freezer cartridge.

Firmware 1.1

Fixed incompatibilities in the border engine. Using the VICE testbench, I managed to get a cycle-perfect border display. Opening horizontal and vertical boards should now work in both PAL and NTSC machines.

Firmware 1.0

Initial release of the FPGA configuration