www.logiccircuit.org

Sharp assembler have a assembly programming language but i think the keyword is calling from the C++ any how i just modified with easy asm to make a real assembly file structure the file code is compile through C# compiler

I Find VHD program that can be add to the project https://github.com/lewischeng-ms/vhd-manager
we can use this library with the code https://github.com/breezechen/DiscUtils

I Found this also is for HTML and CSS and Font
https://github.com/hyperlinq/hyperlinq
https://github.com/Athari/CsCss
https://github.com/Robmaister/SharpFont

Also a simple C compiler no header, need to be program https://github.com/nrother/simple-c

Xilinx have a solution in input / output pin http://www.eetimes.com/document.asp?doc_id=1274665