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  1. There is an excellent RISC-V board on my desk: a SpacemiT PicoITX/K3.

  2. Last in a series on building a firmware-free VideoBIOS for RISC-V.

  3. Seventh in a series on building a firmware-free VideoBIOS for RISC-V.

  4. Sixth in a series on building a firmware-free VideoBIOS for RISC-V.

  5. Fifth in a series on building a firmware-free VideoBIOS for RISC-V.

  6. Fourth in a series on building a firmware-free VideoBIOS for RISC-V.

  7. Third in a series on building a firmware-free VideoBIOS for RISC-V.

  8. Second in a series on building a firmware-free VideoBIOS for RISC-V.

  9. First in a series on building a firmware-free VideoBIOS for RISC-V — teaching a cold graphics card to speak to a monitor before any operating system exists.

  10. This is the last development post for QRV.

  11. Since the project began, taskman has run in S-mode — the RISC-V supervisor mode, shared with the kernel.

  12. Two ambitious project branches emerged from the v0.27 milestone.

  13. Exactly two months ago today, on February 27, the project restarted. v0.27 is the milestone that closes that chapter.

  14. esh served its purpose.

  15. This is the follow-up to the earlier v0.25 post.

  16. That mount command works.

  17. QRV v0.24 is the NVMe release.

  18. QRV v0.23 closes a ~10% daemon-spawn hang that had survived v0.22, brings a native UART driver to the SiFive Unmatched, and fixes the PLIC interrupt delivery path for the FU740's heterogeneous hart layout.

  19. 50/50 clean boots on QEMU.

  20. It boots.

  21. Two evening sessions, about four to five hours each.

  22. We're progressing towards v0.21 steadily.

  23. v0.20 is the release where SMP stopped being a liability.

  24. Three primary features of this release will be: devc-serial devb-virtio fs-unix (the latter one is for the same file system type as used in xv6) Also some new utilities and resource managers will be added: pipe pidin slay Stay tuned!

  25. QRV v0.16: Working Shell, Working IPC v0.16 boots to a working shell prompt on QEMU. pwd prints the working directory, echo works, ls lists the root filesystem, and non-existent commands report "No such file or directory".