If you want hardware open to the transistor level and not just the microcode level, just use an FPGA. Actually FPGA is gate level, not transistor level but still is a lot closer than microcode.
Most FPGAs are nothing like open at the gate level. You provide a proprietary toolchain with HDL and it generates... something. The encoding of that something is proprietary, how it maps to hardware resources is a trade secret (though the tools will tell you what proportion of each type of resources are used).
FPGA (Score:0)
If you want hardware open to the transistor level and not just the microcode level, just use an FPGA. Actually FPGA is gate level, not transistor level but still is a lot closer than microcode.
Re:FPGA (Score:2)