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Embedded, open-source, and open-hardware enthusiast interested in passing knowledge to next generation. OpenHub https://openhub.net/accounts/ppisa/positions . For our computer architectures education see https://comparch.edu.cvut.cz/ .
ppisa
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jakub@social.jirutka.cz

Jakub Jirutka 🇪🇺🇺🇦

Rally in support of on Old Town Square in was huge! The square was completely packed.

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ppisa

Pavel Pisa

Edited 1 year ago
QtRvSim version 0.9.6 released. The #qtrvsim is educational #riscv simulator with pipeline and cache visualization. Version 0.9.6 adds support of M-mode ecalls, ACLINT MTIMER, MSWI, SSWI, related CSR registers, serial port Rx and Tx interrupts and more. See notes on the release page https://github.com/cvut/qtrvsim/releases/tag/v0.9.6 . Online version and related courses materials are available at https://comparch.edu.cvut.cz/ . It provides enough to run, port or implement a simple (no memory protection or paging; M-mode only) operating system with preemptive multitasking.
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pdp7@mastodon.social

Drew Fustini

playlist of the RISC-V Summit 2023 videos from earlier this month
https://www.youtube.com/playlist?list=PL85jopFZCnbMfMRR25ENcRkhhAUGwP5C5

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osnews@mstdn.social

OSNews

Raptor Computing working on new POWER systems using OpenPOWER CPU from Solid Silicon

Well, this is a pleasant surprise and a massive coincidence.

Besides that BMC-focused press release, Raptor Computing Systems tweeted out that they are working on "next generation of high performance, fully owner controlled systems! Built using the open POWER ISA

https://www.osnews.com/story/137563/raptor-computing-working-on-new-power-systems-using-openpower-cpu-from-solid-silicon/

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ppisa

Pavel Pisa

Booth presenting open technologies at #LinuxDays 2023. uLAN project https://ulan.sourceforge.net/ used in PiKRON's instruments, agriculture and even in home automation prototype at CTU, full presentation of its 30-years in use https://ulan.sourceforge.net/pdf/ulan-linuxdays23-slides.pdf . The #QtRvSim, RISC-V simulator has been presented as well. #pysimCoder generated code controls motor on #MZ_APO educational kit designed for CTU courses. Open motion base board for Teensy-4.1 is on the right, same as #VisionFive2. See more about related activities at Open Technologies Research Education and Exchange Services (unofficial CTU FEE group) pages https://gitlab.fel.cvut.cz/otrees/org/-/wikis/knowbase
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Pavel Pisa

Edited 1 year ago
#qtrvsim educational simulator compiled and running on real #riscv. #visionfive2 provided from RISCV.org developer boards program just arrived today so native build and run of https://github.com/cvut/qtrvsim was tempting.
Simulator can be used with internal assembler or can run simple RV32IM and RV64IM static ELF binaries including even 7 Linux kernel system calls. Packages are provided for x86 and ARM GNU/Linux, Windows, Mac and browser version is available too https://comparch.edu.cvut.cz/ but running it on architecture which it supports and is used for teaching is pleasant step forward.
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ppisa

Pavel Pisa

Edited 1 year ago
The recording of our 30 years in #CANBUS support presented at #devconf_cz is available
https://youtu.be/RwmQYjfzQAg
related open source drivers, kernel support, designs, latency testing etc.. at https://canbus.pages.fel.cvut.cz/
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palmer

Palmer Dabbelt

QtRvSim talk at FOSDEM
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Pavel Pisa

In person meeting/discussion about computer architectures teaching at Brno DevConf https://sched.co/1MYo9 . We bring our QtRvSim and QtMip simulators and teaching materials to share, exchange with others comparch.edu.cvut.cz/ and are curious to see, learn what others use.
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Pavel Pisa

Edited 1 year ago
CAN Bus in Control, Automotive and Satellitelites at Brno DevConf https://sched.co/1MYjG more. Daily kernel build latency testing at https://canbus.pages.fel.cvut.cz/can-latester/ more about used CTU CAN FD #CANBUS controller and other projects at https://canbus.pages.fel.cvut.cz/
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