ABSTRACT
Embedded systems constitute the class of computers that present
the most significant volume and are increasingly present in
everyday life. The main element of these systems is the processor,
which can be found in discrete form, represented by a physical
component, or cores, as used in programmable logic devices.
Processors of the same architecture share the same instruction
set but may differ in the organization’s implementation. RISC
(Reduced Instruction Set Computer) is the class of architectures
that favors a simple, reduced instruction set. RISC-V is an example
of such architecture, which consists of an initiative by academia
and industry to be open and free, aiming for easy and optimized
implementations. However, due to the recent disclosure of its
features and specifications, RISC-V needs more reference material
for digital and embedded system designs. This work proposes
the RVSH, a simple RISC-V processor for teaching and research
activities. The implementation aims to allow the adoption of this
architecture in topics such as digital systems, computer architecture,
microcontrollers, and embedded systems design.