Does ISA ownership matter? A Tale of Three ISAs

An instruction set architecture (ISA) is crucial to the development of processors and their software ecosystems. Does ISA ownership matter? Let’s consider three proprietary ISAs and their history to find out.

Open Source vs Commercial RISC-V Licensing Models

Everybody is familiar with commercial licensing from traditional processor IP vendors. In discussing RISC-V, there is widespread confusion of terminology with RISC-V often being described as “open source”, often understood as “free”. But what is reality?

What is needed to support an operating system?

For each embedded product, software developers need to consider whether they need an operating system; and if so, what type of an OS. Operating systems vary considerably and the choice of one for your processor core has important implications. Let us explore them.

What is processor core complexity?

Looking at any processor IP, you will find that their vendors emphasise PPA (performance, power & area) numbers. In theory, they should provide a level playing field for comparing different processor IP cores, but in reality, the situation is more complex. Let us consider performance.

Understanding the Performance of Processor IP Cores

Looking at any processor IP, you will find that their vendors emphasise PPA (performance, power & area) numbers. In theory, they should provide a level playing field for comparing different processor IP cores, but in reality, the situation is more complex. Let us consider performance.

Codasip’s Expanding RISC-V Offering

In the last three months, Codasip’s RISC-V processor offering has expanded considerably. For some years, Codasip has supplied Bk3 and Bk5 RISC-V cores aimed at low- to medium-complexity embedded applications. But recently four additional cores have joined the Codasip RISC-V offering.