Vectorblox ORCA ORCA is an implementation of RISC-V. It is intended to target FPGAs and can be configured as either RV32I a RV32IM core. ORCA can be used as a standalone processor, but was built to be a host to Vectorblox's proprietary Lightweight Vector Extensions (LVE) or full-fledged Matrix processor MXP. It has optional AXI3/4 instruction and data caches, a separate AXI4-Lite interface for unc