Why the Nano-V is so important #2
Description
I was just fascinated by this device. What a great idea.
Now I understand why the soft core version of this processor is so important to me.
I am working on a. paper to show that a modified J1 stack machine on ICE40 UP5K can be roughly half the size of the smallest 32 bit soft core RISC-v machines. Basically the RISC-V machines require a large multiplexer for the registers. This device and a stack machine just use block RAM. The stack machine can use the block RAM for stacks.
RISC-V can be implemented very efficiently in ASIC, but in FPGAs, they require large multiplexers, where every node consumes an entire logic cell.
So I do hope that the soft core version of this device gets resurrected, and the LUT numbers get published.
I hope that this information is of interest to you.