Let's look inside a #RISCV App for Apache #NuttX RTOS ... And how the app is loaded on #Ox64 BL808 SBC @PINE64

Article: https://lupyuen.codeberg.page/articles/app

Inside the simplest #RISCV App for Apache #NuttX RTOS

Article: https://lupyuen.codeberg.page/articles/app.html#inside-a-nuttx-app

How #NuttX Apps make #RISCV System Calls (ecall) to NuttX Kernel

Article: https://lupyuen.codeberg.page/articles/app.html#nuttx-app-calls-nuttx-kernel

Here's how #NuttX Kernel handles a #RISCV System Call (ecall)

Article: https://lupyuen.codeberg.page/articles/app.html#nuttx-kernel-handles-system-call

Watch what happens when our #RISCV App makes a System Call to #NuttX Kernel

Article: https://lupyuen.codeberg.page/articles/app.html#system-call-in-action

#NuttX uses 2 sets of #RISCV Page Tables: Kernel Page Table and User Page Table

Article: https://lupyuen.codeberg.page/articles/app.html#kernel-accesses-app-memory

How Apache #NuttX RTOS starts a NuttX App ... With ELF Loader and Memory Mgmt Unit

Article: https://lupyuen.codeberg.page/articles/app.html#kernel-starts-a-nuttx-app

Preparing the Initial RAM Disk (initrd) for Apache #NuttX RTOS on #Ox64 BL808 SBC

Article: https://lupyuen.codeberg.page/articles/app.html#initial-ram-disk

Here's how we mount the #NuttX Initial RAM Disk on #Ox64 BL808 SBC

Article: https://lupyuen.codeberg.page/articles/app.html#mount-the-initial-ram-disk