Migrating ZynthianOS to RISC-V, project name Zynia

[tunagenes]

I posted a bunch of links about the announcement in the Raspberry Pi Pico topic:

Raspberry Pi Pico

Wow - Raspberry Pi Pico 2 announced today - and supports Arm and RISC-V cores! Raspberry Pi Pico 2 is our new $5 microcontroller board, built on RP2350: our new high- performance, secure microcontroller. With a higher core clock speed, double the on-chip SRAM, double the on-board flash memory, more powerful Arm cores, optional RISC-V cores, new security features, and upgraded interfacing capabilities, Raspberry Pi Pico 2 delivers a significant performance and feature boost, while retaining hard…

@pac_71

What do you all think would be the difference between the ARM and RISC V cores on a low power 150 MHz MCU?

I think there wouldn’t be a huge performance difference between a basic Arm and RISC-V core implemented at the same speed, unless, some of the optional parts of RISC-V architecture were implemented. For example, if the Vector extension was implemented, and if we took advantage of it in a Synth Engine to speed up the Digital Signal Processing we could see a really noticeable difference. At least, that’s what I’m hoping for with Zynia!

There’s a great book, The RISC-V Reader: An Open Architecture Atlas, that besides introducing RISC-V, also compares it to Arm and x86.