[Milkymist-devel] read/write PS/2 + hi-res VGA merged

[Sébastien Bourdeauducq]

Hi Takeshi,

I have merged your changes with minor fixes; see 
http://github.com/lekernel/milkymist/commit/ad7ae773399202d90e0b159d6a54522dcec8f065
http://github.com/lekernel/milkymist/commit/2642bb35b2cb8c6687d7f9672010b6f832cdb555

Thank you for your contribution.

Since the VGA FIFO is getting quite big, it becomes very interesting to use 
the FIFO16 primitive instead of the behavioral (and inefficient) model in 
order to optimize FPGA resource usage.

See http://www.xilinx.com/itp/xilinx8/books/docs/v4ldl/v4ldl.pdf p.104

I would suggest creating another module named vga_asfifo that does the same 
thing as the current behavioral model but uses the FIFO16. This way, we can 
easily revert to the former model, which is useful when porting Milkymist to a 
non-Xilinx device or for simulation. Could you take care of this?

Thanks,
Sébastien