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Lup Yuen Lee 李立源<a href="https://qoto.org/tags/Avaota" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Avaota</a>-A1 <a href="https://qoto.org/tags/Arm64" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arm64</a> SBC is officially supported by Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS (<a href="https://qoto.org/tags/Allwinner" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Allwinner</a> A527 SoC) ... Let's take <a href="https://qoto.org/tags/Unicorn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Unicorn</a> Emulator and create a Software Emulator for Avaota SBC<a href="https://lupyuen.org/articles/unicorn4.html" rel="nofollow noopener noreferrer" target="_blank">https://lupyuen.org/articles/unicorn4.html</a>

Lup Yuen Lee 李立源🤔 "Explain how <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> boots"Source: <a href="https://docs.google.com/document/d/1qYkBu3ca3o5BXdwtUpe0EirMv9PpMOdmf7QBnqGFJkA/edit?tab=t.0" rel="nofollow noopener noreferrer" target="_blank">https://docs.google.com/document/d/1qYkBu3ca3o5BXdwtUpe0EirMv9PpMOdmf7QBnqGFJkA/edit?tab=t.0</a>

Lup Yuen Lee 李立源Life Without GitHub: What's it like? Let's talk about <a href="https://qoto.org/tags/Forgejo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Forgejo</a> Git Forge ... And whether Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS could possibly coexist with GitHub and our own Git ForgeArticle: <a href="https://lupyuen.org/articles/forgejo.html" rel="nofollow noopener noreferrer" target="_blank">https://lupyuen.org/articles/forgejo.html</a>

Lup Yuen Lee 李立源SeeedStudio XIAO <a href="https://qoto.org/tags/ESP32" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESP32</a>-S3 with Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS 🎉Source: <a href="https://github.com/apache/nuttx/pull/16161" rel="nofollow noopener noreferrer" target="_blank">https://github.com/apache/nuttx/pull/16161</a>

Lup Yuen Lee 李立源Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> might be the First OS to boot on <a href="https://qoto.org/tags/Unicorn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Unicorn</a> Emulator 🎉Source: <a href="https://github.com/lupyuen/nuttx-arm64-emulator/issues/2" rel="nofollow noopener noreferrer" target="_blank">https://github.com/lupyuen/nuttx-arm64-emulator/issues/2</a>

Lup Yuen Lee 李立源ROM FS Filesystem in Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOSSource: <a href="https://github.com/lupyuen/nuttx-arm64-emulator/blob/avaota/nuttx-boot-flow.pdf" rel="nofollow noopener noreferrer" target="_blank">https://github.com/lupyuen/nuttx-arm64-emulator/blob/avaota/nuttx-boot-flow.pdf</a>

Lup Yuen Lee 李立源SysCall 0 in <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> <a href="https://qoto.org/tags/Arm64" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arm64</a> ... What's supposed to happen? 🤔Source: <a href="https://github.com/lupyuen/nuttx-arm64-emulator#handle-nuttx-syscall-in-unicorn" rel="nofollow noopener noreferrer" target="_blank">https://github.com/lupyuen/nuttx-arm64-emulator#handle-nuttx-syscall-in-unicorn</a>

Lup Yuen Lee 李立源<a href="https://qoto.org/tags/Unicorn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Unicorn</a> Emulator for <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> ... Fixing the <a href="https://qoto.org/tags/Arm64" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arm64</a> SysCall 🤔Source: <a href="https://github.com/lupyuen/nuttx-arm64-emulator#unicorn-exception-at-nuttx-syscall" rel="nofollow noopener noreferrer" target="_blank">https://github.com/lupyuen/nuttx-arm64-emulator#unicorn-exception-at-nuttx-syscall</a>

Lup Yuen Lee 李立源<a href="https://qoto.org/tags/Unicorn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Unicorn</a> Emulator booting Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS ... Why won't it execute SysCalls? 🤔Source: <a href="https://github.com/lupyuen/pinephone-emulator/tree/avaota" rel="nofollow noopener noreferrer" target="_blank">https://github.com/lupyuen/pinephone-emulator/tree/avaota</a>

Lup Yuen Lee 李立源<a href="https://qoto.org/tags/Unicorn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Unicorn</a> Emulator has a demo of <a href="https://qoto.org/tags/Arm64" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arm64</a> Memory Mgmt Unit ... in 18 Lines of Assembly! Let's decipher the Demo Code, and fix our emulator of Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS for Arm64 SBCs<a href="https://lupyuen.org/articles/unicorn3.html" rel="nofollow noopener noreferrer" target="_blank">https://lupyuen.org/articles/unicorn3.html</a>

Lup Yuen Lee 李立源<a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> Boot Flow for <a href="https://qoto.org/tags/Avaota" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Avaota</a>-A1 SBC 🤔Source: <a href="https://github.com/lupyuen/pinephone-emulator/blob/avaota/nuttx-boot-flow.pdf" rel="nofollow noopener noreferrer" target="_blank">https://github.com/lupyuen/pinephone-emulator/blob/avaota/nuttx-boot-flow.pdf</a>

Lup Yuen Lee 李立源Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> and small systems - Modbus slave example<a href="https://www.railab.me/posts/2025/3/nuttx-and-small-systems-modbus-slave-example/" rel="nofollow noopener noreferrer" target="_blank">https://www.railab.me/posts/2025/3/nuttx-and-small-systems-modbus-slave-example/</a>

Lup Yuen Lee 李立源Finding the Breaking Commit in Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS ... Let's automate with Git BisectArticle: <a href="https://lupyuen.org/articles/bisect.html" rel="nofollow noopener noreferrer" target="_blank">https://lupyuen.org/articles/bisect.html</a>

Lup Yuen Lee 李立源Thanks to <a href="https://qoto.org/tags/Unicorn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Unicorn</a> Emulator: Here's the Boot Flow for Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS ... And it's clickable! 👍Source: <a href="https://github.com/lupyuen/pinephone-emulator/tree/qemu" rel="nofollow noopener noreferrer" target="_blank">https://github.com/lupyuen/pinephone-emulator/tree/qemu</a>

Lup Yuen Lee 李立源<a href="https://qoto.org/tags/Arm64" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arm64</a> Memory Mgmt Unit: Level 1 & 2 Page Tables ... From Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOSSource: <a href="https://gist.github.com/lupyuen/b9d23fe902c097debc53b3926920045a#file-gistfile1-txt-L78-L884" rel="nofollow noopener noreferrer" target="_blank">https://gist.github.com/lupyuen/b9d23fe902c097debc53b3926920045a#file-gistfile1-txt-L78-L884</a>

Lup Yuen Lee 李立源<a href="https://qoto.org/tags/Avaota" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Avaota</a>-A1 SBC (Allwinner A527) ... Becomes PR Test Bot for Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS 🎉 Source: <a href="https://github.com/apache/nuttx/pull/16030#issuecomment-2751290141" rel="nofollow noopener noreferrer" target="_blank">https://github.com/apache/nuttx/pull/16030#issuecomment-2751290141</a>

Lup Yuen Lee 李立源XIAO RA4M1 by <a href="https://qoto.org/tags/SeeedStudio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SeeedStudio</a>: Now supported by Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS 🎉 (<a href="https://qoto.org/tags/Renesas" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Renesas</a> RA4M1, Dual Cortex-M4)Source: <a href="https://github.com/apache/nuttx/pull/16039" rel="nofollow noopener noreferrer" target="_blank">https://github.com/apache/nuttx/pull/16039</a>

Lup Yuen Lee 李立源<a href="https://qoto.org/tags/Avaota" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Avaota</a>-A1 SBC <a href="https://fosstodon.org/@PINE64" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@PINE64</a> ... Now supported by Apache <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> RTOS 🎉Source: <a href="https://nuttx.apache.org/docs/latest/platforms/arm64/a527/boards/avaota-a1/index.html" rel="nofollow noopener noreferrer" target="_blank">https://nuttx.apache.org/docs/latest/platforms/arm64/a527/boards/avaota-a1/index.html</a>

Lup Yuen Lee 李立源Our <a href="https://qoto.org/tags/Mastodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Mastodon</a> Server for <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> Continuous Integration has been super helpful, pushing out alerts of Failed Builds ... Here's how we installed Mastodon Server with <a href="https://qoto.org/tags/Docker" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Docker</a> ComposeArticle: <a href="https://lupyuen.org/articles/mastodon.html" rel="nofollow noopener noreferrer" target="_blank">https://lupyuen.org/articles/mastodon.html</a>

Lup Yuen Lee 李立源<a href="https://qoto.org/tags/Arm64" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arm64</a> MMU Page Tables: Deciphering in <a href="https://qoto.org/tags/NuttX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NuttX</a> 😬Source: <a href="https://gist.github.com/lupyuen/728b09461f5f4ab32e7e4a80d744ba4d" rel="nofollow noopener noreferrer" target="_blank">https://gist.github.com/lupyuen/728b09461f5f4ab32e7e4a80d744ba4d</a>

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