Lup Yuen Lee 李立源 @lupyuen@qoto.org

https://lupyuen.org/articles/unicorn4.html

#Avaota-A1 #Arm64 SBC is officially supported by Apache #NuttX RTOS (#Allwinner A527 SoC) ... Let's take #Unicorn Emulator and create a Software Emulator for Avaota SBC

Creating the Unicorn Emulator for Avaota-A1 SBC (Apache NuttX RTOS)

Avaota-A1 Arm64 SBC is officially supported by Apache NuttX RTOS (Allwinner A527 SoC). Let's take Unicorn Emulator and create a Software Emulator for Avaota SBC.

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 29

Pinned post

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 29

Mar 29

https://lupyuen.org/articles/unicorn3.html

#Unicorn Emulator has a demo of #Arm64 Memory Mgmt Unit ... in 18 Lines of Assembly! Let's decipher the Demo Code, and fix our emulator of Apache #NuttX RTOS for Arm64 SBCs

Inside Arm64 MMU: Unicorn Emulator vs Apache NuttX RTOS

Spotted in Unicorn Emulator: A Demo of Arm64 Memory Management Unit (MMU)... in 18 Lines of Arm64 Assembly! Today we decipher the code inside the Arm64 MMU Demo, figure out how it works. Which turns out to be surprisingly helpful for emulating Apache NuttX RTOS, compiled for Arm64 SBCs.

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 15

Pinned post

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 15

Mar 15

https://lupyuen.org/articles/avaota.html

Here's how we ported Apache #NuttX RTOS to Yuzuki #Avaota-A1 SBC @PINE64 … Completed within 24 Hours! (#Allwinner A527)

Porting Apache NuttX RTOS to Avaota-A1 SBC (Allwinner A527 SoC)

This article explains how we ported NuttX from QEMU Arm64 Kernel Build to PINE64 Yuzuki Avaota-A1 SBC based on Allwinner A527 SoC ... Completed within 24 Hours!

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 8

Pinned post

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 8

Mar 8

https://lupyuen.org/articles/testbot3.html

#NuttX Test Bot will test all #Arm64 Pull Requests on a Real #PinePhone ... Let's automate this with an #SDWire MicroSD Multiplexer and #Avaota-A1 SBC

PR Test Bot for PinePhone (Apache NuttX RTOS)

Earlier we created a PR Test Bot that will Build and Test the Pull Requests for Apache NuttX RTOS. Today we extend our Test Bot to Build and Test the Pull Requests for PINE64 PinePhone. Yep on the Real Arm64 PinePhone Hardware!

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 1

Pinned post

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 1

Mar 1

https://lupyuen.org/articles/starpro64.html

#StarPro64 EIC7700X is the Hot New #RISCV SBC by @PINE64 ... Let's boot Linux and Apache #NuttX RTOS ... Maybe run #LLM on NPU on NuttX? (Large Language Model + Neural Processing Unit)

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · 6 days ago

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · 6 days ago

6 days ago

My Mom has just passed away. I'll go Offline for a while

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 13

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 13

Apr 13

https://lupyuen.org/articles/unicorn4.html

#Avaota-A1 #Arm64 SBC is officially supported by Apache #NuttX RTOS (#Allwinner A527 SoC) ... Let's take #Unicorn Emulator and create a Software Emulator for Avaota SBC

Creating the Unicorn Emulator for Avaota-A1 SBC (Apache NuttX RTOS)

Avaota-A1 Arm64 SBC is officially supported by Apache NuttX RTOS (Allwinner A527 SoC). Let's take Unicorn Emulator and create a Software Emulator for Avaota SBC.

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 11

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 11

Apr 11

#Forgejo Git Forge is pleasantly Gittish-Hubbish ... Pull Requests and Issues look super familiar

Article: https://lupyuen.org/articles/forgejo.html#works-the-same

Show thread

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 11

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 11

Apr 11

https://share.libbyapp.com/title/4182540

"Convenience Store Woman" - Sayaka Murata

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 11

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 11

Apr 11

https://www.tomshardware.com/pc-components/storage/u-s-tariffs-to-heavily-impact-hdd-and-ssd-manufacturers-increasing-costs

"HDD and SSD makers will suffer the most despite Trump’s 90-day suspension of country-specific tariffs"

U.S. tariffs to heavily impact HDD and SSD manufacturers, increasing costs

Storage could get significantly more expensive due to tariffs.

Tom's Hardware

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

https://www.tomshardware.com/pc-components/cpus/google-tool-spurs-contest-to-run-risc-v-on-amd-zen-cpus-but-is-it-possible

"Jianchen Project members want to find someone, who can modify AMD's Zen CPU Microcode ... to execute #RISCV Binaries" (Prize: $2,735)

Chinese project aims to run RISC-V code on AMD Zen processors

Why not re-write the code for x86 CPUs?

Tom's Hardware

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

https://www.hackster.io/news/choosing-the-best-npu-for-on-device-ai-3537876cf06a

"Choosing the best #NPU for On-Device AI" (#RISCV Milk-V Duo)

Choosing the Best NPU for On-Device AI

Researchers benchmarked a wide range of microcontroller-scale NPUs. Which has the right balance of speed and efficiency for your project?

Hackster.io

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

#Forgejo Git Forge with Apache #NuttX RTOS ... Try the demo here

Article: https://lupyuen.org/articles/forgejo.html#nuttx-on-forgejo

Show thread

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

https://strava.app.link/k0udKjvDrSb

22 km Hike: HarbourFront to East Coast Park to Bayshore … New Sandals

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 10

Source: https://docs.google.com/document/d/1qYkBu3ca3o5BXdwtUpe0EirMv9PpMOdmf7QBnqGFJkA/edit?tab=t.0

"Explain how #NuttX boots"

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 9

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 9

Apr 9

https://share.libbyapp.com/title/1944675

"The Strange Library" - Haruki Murakami

The Strange Library

From internationally acclaimed author Haruki Murakami - a fantastical illustrated short novel about a boy imprisoned in a nightmarish library. Opening the flaps on this unique little book, readers will find themselves immersed in the strange world of best-selling Haruki Murakami’s wild imagination. The story of a lonely boy, a mysterious girl, and a tormented sheep man plotting their escape from a nightmarish libr...

share.libbyapp.com

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 9

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 9

Apr 9

Life Without GitHub: What's it like? Let's talk about #Forgejo Git Forge ... And whether Apache #NuttX RTOS could possibly coexist with GitHub and our own Git Forge

Article: https://lupyuen.org/articles/forgejo.html

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 9

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 9

Apr 9

SeeedStudio XIAO #ESP32-S3 with Apache #NuttX RTOS

Source: https://github.com/apache/nuttx/pull/16161

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

https://appleinsider.com/articles/25/04/08/asahi-linux-m4-support-hits-a-roadblock-because-of-apple-silicon-changes

"Asahi #Linux M4 support hits a roadblock because of Apple Silicon changes"

Asahi Linux M4 support hits a roadblock because of Apple Silicon changes | AppleInsider

The Asahi Linux project is having trouble bringing the operating system to M4 Macs, with some chip changes making working with the latest Apple Silicon models a lot tougher.

AppleInsider

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

https://arstechnica.com/gadgets/2025/04/framework-temporarily-pausing-some-laptop-sales-because-of-new-tariffs/

"#Framework temporarily pausing some Laptop Sales because of New Tariffs"

Framework “temporarily pausing” some laptop sales because of new tariffs

“We would have to sell the lowest-end SKUs at a loss.”…

Ars Technica

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

https://bigthink.com/high-culture/ken-liu-short-story/

Short story by Ken Liu: "The gods will not be chained"

"The gods will not be chained": A short story by Ken Liu

Big Think features "The Gods Will Not Be Chained," a short story by Ken Liu, winner of the Nebula, Hugo, and World Fantasy awards.

Big Think

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

https://youtube.com/watch?v=EcbmDXA4Inc

C++ with #RustLang Bindings: Mixing with #CMake

- YouTube

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

www.youtube.com

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 8

https://lupyuen.org/articles/bisect.html

Finding the Breaking Commit in Apache #NuttX RTOS ... Let's automate with Git Bisect

Git Bisecting a Bug (Apache NuttX RTOS)

Suppose we hit a Runtime Bug in Apache NuttX RTOS. We think that the Breaking Commit (causing the bug) is somewhere inside these hundreds of NuttX Commits. But which one? In this article: We run Git Bisect to discover the Breaking Commit.