@landley @dalias @stman that makes sense...

#SPARCv9 / #sparc64 - like #Power9(+) / #ppc64 - aren't per-se bad and a lot of it is used in #CriticalInfrastructure systems like the BAE #Rad750 & #esa #LEON...

Not to mention the fact that they - alongside #RISCv - are the only fully opensourced #ISAs with sufficient powerful designes fit for use cases beyond #IoT-Sensors and other "edge (embedded) computing" applications...

I've not gotten myself over to subscribing the #LKML since the amount of traffic there is just extreme...

But I'd love to see more supported architectures I can port @OS1337 to, and I'd ideally prioritize those long-term that have solid toolchain / compiler / userland support as I don't want to change any upstream code if possible and stick with fixed releases so that even decades later someone can rebuild such a system from scratch if need be...

https://github.com/OS-1337/OS1337/blob/main/docu/ideas/architectures.tsv

As goes radation-hardened SoCs, so goes a segment the #embedded computer industry. I worked on the #VxWorks #RTOS port for PPC750+7400, the basis of #RAD750, and that was a major performance bump. The #SiFive X280 should enable a huge bump in smart on board processing for spacecraft. #riscv #powerpc

SiFive RISC-V cores and Microchip processors will power NASA's future space missions | TechSpot
https://www.techspot.com/news/95911-sifive-risc-v-cores-microchip-processors-power-nasa.html

Another #PowerPC in space
talospace.com/2022/01/anothe…

#RAD750 #PPC750 #Windriver #VxWorks

Radiation hardened Power PC (#RAD750) used on #Opportunity rover.

200K for each board, twins and they run identical VxWorks real-time operating systems.
On land in 06/08/2012 it used the “Side-A” computer, after ~ a year (200 Sol of 669 Sol planned) #NASA swap to side-B for memory corruption on side-A (256 MB of DRAM on each board)

Actually the #rover is at 2320 martian sols (or 2383 earth days, 1696 days longer than expected)

(Each boardr also has 256 kB of EEPROM and 2GB of flash memory)