FPGA

Field programmable gate arrays (FPGAs) are integrated circuits where the digital logic inside of them can be customized. Besides the part that can be modified they can contain memory blocks, DSP or even whole CPU's. That way one do not have to reinventing the wheel to add these common pieces to their systems.

• • Verilog

  • VHDL

  • OpenCL

http://www.cast-inc.com/blog/chip-replacement-with-ip-and-fpgas-68000-processor-example

http://opencores.org/