This is a simple version of Rift2Core. Rift2320 has a small L2 cache, L1 Cache(Much Bigger than Rift2310), no L2 TLB, and supports RISCV64-M. Also, it can pass the riscv-isa-test. And it can boot Linux. (In theory, I will try it when I am free)
2320
sky130A