Debian Trixie RC1 on RISCV with AMDGPU Radeon RX 6600 (StarFive VisionFive 2)
https://youtu.be/i9VigCrE2Xk

https://redd.it/1l959a6
@r_riscv

Why are they so HOT? 🔥

I have 3 OrangePi RV2 boards, with attached heatsinks (ignore the cabling mess, this isn't their permanent home), all running Ubuntu 25.10 (Questing Quantal), and the 6.6.63-ky kernel.

Each of them idles around 134F/60C.

$ sudo sensors
cluster0thermal-virtual-0
Adapter: Virtual device
temp1: +60.0°C

cluster1thermal-virtual-0
Adapter: Virtual device
temp1: +59.0°C

You can see the data in Grafana over the last 2-3 days and in the motd.

They're little toasters, for running on only 7W each.

Is this normal for this board, this chipset? Did I just happen to get 3 defective units?

https://redd.it/1l99s54
@r_riscv

Making the switch in my lab fully to RISC-V MCUs, from STM32 and PIC to RISC-V Doing an Eval of Popular RISC-V Devices

https://redd.it/1l9bgvb
@r_riscv

What's the future for RISC-V, high performance CPU design in Europe/Japan/China?

My understanding there is huge concern with geopolitics these days, anything from the US is subject to US government control for just about any reason, Canada's access to GCP/Azure/AWS was almost completely cut off in March by Trump administration which caused huge concern, also I heard OVH is booming in Europe, sometimes I wonder if it would be feasible one day to design CPU/OS and just about anything advanced in Europe and bypass all US designed stuff? That would make us suffer in Texas. :-(

https://redd.it/1l9bitm
@r_riscv

Wireless-Tag ESP32-P4 Development Board launched for $30 with ESP32-C5 wireless module
https://www.pistiz.com/wireless-tag-esp32-p4-development-board/

https://redd.it/1l9jhfx
@r_riscv

Can you use a 3080 ti on a milk v pioneer

I want to make a risc v pc and I want it to be as powerful as risc v can handle note: or a b580



https://redd.it/1l9k41r
@r_riscv

RISCV Container & RISCV host : Extraction of the decimal digits of 'Perfect Number #52'

"PARI/GP 2.17.2 was released on February 28, 2025. 2.15.4 was released on July 10, 2023. If Alpine is running a 2.17.x version and Ubuntu is on a 2.15.x or earlier, there could be substantial improvements between those versions."

https://preview.redd.it/n67tfhvp0k6f1.jpg?width=1920&format=pjpg&auto=webp&s=aa4ffc4ab5ebf018a40e52f2edc89a29dd03fa28



https://redd.it/1l9wn57
@r_riscv

Help: GDB Remote Debugging with Spike + pk Timing Out on Port 1234 (RV32IMAC)

Hi all,

I'm working with a RISC-V toolchain targeting rv32imac and trying to debug a simple hello.elf program using spike and gdb, but I'm stuck with a timeout issue when GDB tries to connect.

Here's what I have:

Toolchain: `riscv32-unknown-elf-gcc` (newlib)
hello.elf is compiled for RV32IMAC and runs fine with Spike + pk.
`pk` is 32-bit and works correctly.
GDB loads hello.elf correctly.



spike --isa=RV32IMAC /path/to/pk /path/to/hello.elf

This prints the expected output (e.g., “Hello, RISC-V!”).

When I try to launch Spike for remote debugging:

spike --isa=RV32IMAC --rbb-port=1234 /path/to/pk /path/to/hello.elf

It prints:

Listening for remote bitbang connection on port 1234.

Then in another terminal, I run GDB:

riscv32-unknown-elf-gdb /path/to/hello.elf
(gdb) target remote localhost:1234

But I get:

Could not connect: Connection timed out.

I’ve verified the ELF and pk binaries are 32-bit and compatible.
The firewall is disabled, and I'm on a local VM running Ubuntu.
Spike version is 1.1.1-dev (built from source).

# My Questions:

Is --rbb-port expected to work out-of-the-box with rv32imac?
Is there a minimum Spike or pk version required for remote GDB debugging?
Could this be an issue with how Spike is configured or built?

Any suggestions, debugging tips, or example working setups would be much appreciated!

Thanks in advance

https://redd.it/1l9viom
@r_riscv

RISC-V's Increasing Influence
https://semiengineering.com/risc-vs-increasing-influence/

https://redd.it/1la29ow
@r_riscv

RISC V designers in Germany?

Hello, are there any companies in Germany that are using RISC V architecture? Are there any teams there who are trying to work with BOOM/Rocket Chip or any open source designs?

https://redd.it/1la4wyz
@r_riscv

Allwinner H135 RISC-V multimedia SoC is made for projectors and KVM solutions
https://www.cnx-software.com/2025/06/13/allwinner-h135-risc-v-multimedia-soc-is-made-for-projectors-and-kvm-solutions/

https://redd.it/1la8mja
@r_riscv