This document specifies the RVB23 profile family. RVB23 is the first major release of the RVB series of RISC-V Application Processor Profile.

RVB profiles are intended to be used for customized 64-bit application processors that will run rich OS stacks, but usually as a custom build of standard OS source-code distributions. The approach is to provide a large guaranteed set of relatively inexpensive and/or widely beneficial features but allow optionality for more expensive and/or more targeted extensions.

Unlike the RVA profiles, it is explicitly a non-goal of RVB profiles to provide a single standard ISA interface supporting a wide variety of binary kernel and binary application software distributions. However, individual software ecosystems may build upon RVB profiles to produce a more targeted standard interface for a certain market.