A full logic simulation of a processor can be done from VHDL or Verilog code in software, but cycle accurate simulations are many, many orders of magnitude slower than a real IC.
You can set up testbench code that feeds in data and stuff, and link different stuff together digitally. I don't know if there's much in the way of analogue simulators like SPICE hooked up to logic simulators though.
The next level down is to run it up on an FPGA, which is only a few orders of magnitude slower than you can clock an IC.
You can set up testbench code that feeds in data and stuff, and link different stuff together digitally. I don't know if there's much in the way of analogue simulators like SPICE hooked up to logic simulators though.
The next level down is to run it up on an FPGA, which is only a few orders of magnitude slower than you can clock an IC.