3 ms·
Of course you can do it and it will work. A "standard" (e.g. 5 stage pipe in-order) 64 bit RISC-V core takes a very small proportion of even a fairly small FPG
by brucehoult 5y ago
Of course you can do it and it will work.
A "standard" (e.g. 5 stage pipe in-order) 64 bit RISC-V core takes a very small proportion of even a fairly small FPGA such as an Arty 100T. You can even do multiple cores. 128 bit would fit no problem at all.
You'd probably have slightly lower Fmax but there's no question about working and if you actually need 128 bit arithmetic then it will be faster than using multiple instructions on a 64 bit CPU (e.g. 4 instructions for a 128 bit add).