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science ∩ art = wonder

all memory blocks here are allocated by @a_v_p

GitHub: https://github.com/artyom-poptsov
Mastodon: https://fosstodon.org/@avp

https://memory-heap.org/~avp/
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memory heap
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memory heap
memory heap
Что интересно, программатор WCH-LinkE построен на том же чипе (CH32V), как и те, которые он может программировать. Вот тут, на форуме EEVblog, есть тред по вопросу перепрошивки окирпиченных WCH-LinkE: https://www.eevblog.com/forum/microcontrollers/reflashing…
В итоге, вот эта утилита помогла восстановить работу "окирпиченного" WCH-LinkE:
https://github.com/cjacker/wlink-iap

Симптомы окирпиченности были: мигающий синий светодиод на плате, плата не определялась, как рабочий WCH-LinkE утилитой wlink.

Причина: программатор был в режиме IAP (перепрошивки.)

Решение:
wlink-iap -q


#riscv
GitHub
GitHub - cjacker/wlink-iap: A tool to upgrade / downgrade WCH-LinkE firmware online using IAP method.
A tool to upgrade / downgrade WCH-LinkE firmware online using IAP method. - cjacker/wlink-iap
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174 viewsArtyom "avp" Poptsov, edited  
memory heap
#guix #guix_patches #riscv

Отправил в GNU Guix патч с добавлением wlink:
https://codeberg.org/guix/guix/pulls/814
Codeberg.org
gnu: Add wlink.
<!--
Below is a checklist for package-related patches. For details please refer to
[the manual](https://guix.gnu.org/manual/devel/en/html_node/Submitting-Patches.html)

Common issues in the contribution process are also documented in the
["Contributing"…
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237 viewsArtyom "avp" Poptsov, 
memory heap
Zach of All Trades, "Which 10 Cent Microcontroller is Right for You? Comparing the CH32V003 to the PY32F002A":
https://www.youtube.com/watch?v=Y-n7vXHAqm8

Сравнение двух дешёвых контроллеров: PY32F002A и CH32V003.

#riscv
YouTube
Which 10 Cent Microcontroller is Right for You? Comparing the CH32V003 to the PY32F002A.
The WCH CH32V003 and the Puya PY32F002A are both ultra-cheap 32-bit microcontrollers. Coming in at around 10 cents each, these are perhaps the cheapest flash-based microcontrollers a consumer can buy. But are they worth it? In a previous video I explored…
174 viewsArtyom "avp" Poptsov, 
memory heap
ExplainingComputers, "RISC-V 2025 Update":
https://www.youtube.com/watch?v=9s8hPmCZ0mk

#riscv
YouTube
RISC-V 2025 Update
RISC-V 2025 annual review, exploring key developments from the past 12 months.

If you like this video, you may also be interested in the following ExplainingComputers episodes:

Why RISC-V Matters: https://www.youtube.com/watch?v=4TmHSsIU1ns

RISC-V 2024…
208 viewsArtyom "avp" Poptsov, 
memory heap
memory heap
ExplainingComputers, "RISC-V 2025 Update": https://www.youtube.com/watch?v=9s8hPmCZ0mk #riscv
Любопытно — ноутбук на восьмиядерном 64-битном RISC-V процессоре:
https://deepcomputing.io/product/dc-roma-risc-v-laptop-ii/

#riscv
DeepComputing
DC-ROMA RISC-V LAPTOP II - DeepComputing
👀3
183 viewsArtyom "avp" Poptsov, 
memory heap
LaurieWired, "The Magic of RISC-V Vector Processing":
https://www.youtube.com/watch?v=Ozj_xU0rSyY

Классная подача материала!

#riscv
YouTube
The Magic of RISC-V Vector Processing
The 1.0 RISC-V Vector Specification is now Ratified, and the first pieces of silicon using the new spec are starting to hit the shelves. I go over the utility of Vector Instructions, why you would want them, why you should care, and how to use them in raw…
146 viewsArtyom "avp" Poptsov, 
memory heap
bitluni, "DIY 256-Core RISC-V super computer":
https://www.youtube.com/watch?v=lh93FayWHqw

#riscv #mcu
YouTube
DIY 256-Core RISC-V super computer
Free Assembly for 1-6 Layer PCBs at JLCPCB, 3D Printing from $0.3, Sign up to Get $60 Coupons here: https://jlcpcb.com/?from=bitluni (Sponsor)

This new cluster build escalated quickly. Especially with the bugs I built in but here are some specs:
256x RISC…
141 viewsArtyom "avp" Poptsov, edited  
memory heap
bitluni, "160 Core RISC-V supercluster on a single M.2":
https://www.youtube.com/watch?v=HRfbQJ6FdF0

#riscv #mcu
YouTube
I made a GPU at home
Take back your personal data with Incogni! Use code BITLUNI at the link
below and get 60% off an annual plan: https://incogni.com/BITLUNI (sponsor)

Code & Designs: https://github.com/bitluni/Supercluster2

Tools and parts (affiliate links):
RISC-V CH32V208:…
141 viewsArtyom "avp" Poptsov, 
memory heap
Technically Unsure, "RISC-V Meets Framework: Unveiling the DC Roma Modular Laptop":
https://youtu.be/jwRGt71pR6s

RISC-V ноутбук на базе Framework.

#riscv
YouTube
RISC-V Meets Framework: Unveiling the DC Roma Modular Laptop
In this video, I showcase the DC Roma RISC-V-based laptop, built on the modular Framework Laptop 13. This groundbreaking device features the DC Roma RISC-V mainboard, making it one of the first fully open-source RISC-V laptops.

I’ll dive into:
* Power consumption…
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179 viewsArtyom "avp" Poptsov, 
memory heap
Курс по RISC-V ассемблеру от Георгия Курячего из МГУ:
https://uneex.org/LecturesCMC/ArchitectureAssembler2025

#riscv #assembler
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179 viewsArtyom "avp" Poptsov, 
memory heap
Интерактивный RISC-V симулятор:
https://riscv-simulator-five.vercel.app/

#riscv
riscv-simulator-five.vercel.app
Interactive RISC-V Simulator
A web-based interactive RISC-V processor simulator for visualizing. Write and execute RISC-V assembly code, observe register changes, and track instruction flow.
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173 viewsArtyom "avp" Poptsov, 
memory heap
Распиновка на штырьковой колодке, расположенной на VisionFive2.

#riscv
159 viewsArtyom "avp" Poptsov, 
memory heap
Курс по RISC-V:
https://www.youtube.com/playlist?list=PLbtzT1TYeoMiKup6aoQc3V_d7OvOKc3P5

#riscv
YouTube
RISC-V
The RISC-V Processor Architecture, RV32 ISA, Assembly Language, Verilog FPGA
🔥1
193 viewsArtyom "avp" Poptsov, 
memory heap
Микроконтроллер на базе архитектуры RISC-V, который производится в России:
https://habr.com/ru/companies/ruvds/articles/919202/

#riscv
Хабр
Русская «Ардуина»: первый взгляд любителя
Я — самодельщик-ардуинщик со стажем. Люблю пихать ардуины во всякие подходящие и не очень места. Как-то раз я уже показывал свою коллекцию Arduino-совместимых плат, и с тех пор она только росла и...
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195 viewsArtyom "avp" Poptsov, edited  
memory heap
Презентация по векторным расширениям RISC-V:
https://riscv.org/wp-content/uploads/2024/12/15.20-15.55-18.05.06.VEXT-bcn-v1.pdf

#riscv
107 viewsArtyom "avp" Poptsov, 
memory heap
#riscv #memory_dump

Расшифровка названий разделов на StarFive VisionFive2:
- HiFive FSBL — First-Stage BootLoader.
- HiFive BBL — Berkely Boot Loader.

Пример того, как произведена настройка разделов в официальной сборке Debian:
Device          Start       End   Sectors  Size Type
/dev/mmcblk1p1   4096      8191      4096    2M HiFive BBL
/dev/mmcblk1p2   8192     16383      8192    4M HiFive FSBL
/dev/mmcblk1p3  16384    221183    204800  100M EFI System
/dev/mmcblk1p4 221184 109382860 109161677 52.1G Linux filesystem
GitHub
GitHub - westerndigitalcorporation/RISC-V-Linux: This repository provides a Linux kernel bootable on RISC-V boards from SiFive
This repository provides a Linux kernel bootable on RISC-V boards from SiFive - westerndigitalcorporation/RISC-V-Linux
103 viewsArtyom "avp" Poptsov, 
memory heap
memory heap
#riscv #memory_dump Расшифровка названий разделов на StarFive VisionFive2: - HiFive FSBL — First-Stage BootLoader. - HiFive BBL — Berkely Boot Loader. Пример того, как произведена настройка разделов в официальной сборке Debian: Device Start …
#riscv #memory_dump

Получилось загрузиться в GNU Guix с MicroSD на VisionFive2, но пришлось допиливать образ visionfive2.scm, плюс в U-Boot также пришлось сделать следующие команды:
env default -a -f
setenv fdtfile starfive/jh7110-starfive-visionfive-2-v1.3b.dtb
setenv boot_targets "mmc1 nvme0 dhcp"
setenv bootcmd_nvme0 "devnum=0; bootpart=1; run nvme_boot"


Нашёл здесь инструкцию полезную:
https://forum.rvspace.org/t/u-boot-problem/3447/8
RVspace Forum
U-boot problem
I have a u-boot problem booting OpenBSD from NVMe: ** Invalid partition 3 ** Couldn't find partition nvme 0:3 Can't set block device I figured out: StarFive # ls nvme 0:1 efi/ 0 file(s), 1 dir(s) Can boot directly from nvme like so: load nvme 0:1…
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125 viewsArtyom "avp" Poptsov, 
memory heap
memory heap
#riscv #memory_dump Получилось загрузиться в GNU Guix с MicroSD на VisionFive2, но пришлось допиливать образ visionfive2.scm, плюс в U-Boot также пришлось сделать следующие команды: env default -a -f setenv fdtfile starfive/jh7110-starfive-visionfive-2-v1.3b.dtb…
Прогресс по запуску GNU Guix на StarFive VisionFive2:
https://fosstodon.org/@avp/115716535813497437

#riscv #guix
Fosstodon
avp (@[email protected])
Attached: 1 image

So now I can boot straight into a barebones GNU Guix system on my StarFive VisionFIve 2 RISC-V board from a MicroSD card. I had to patch "gnu/bootloader/u-boot.scm" in Guix to make this work:
https://codeberg.org/avp/guix/src/branch/avp…
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133 viewsArtyom "avp" Poptsov, edited