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There is an excellent RISC-V board on my desk: a SpacemiT PicoITX/K3.
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Last in a series on building a firmware-free VideoBIOS for RISC-V.
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Seventh in a series on building a firmware-free VideoBIOS for RISC-V.
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Sixth in a series on building a firmware-free VideoBIOS for RISC-V.
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Fifth in a series on building a firmware-free VideoBIOS for RISC-V.
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Fourth in a series on building a firmware-free VideoBIOS for RISC-V.
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Third in a series on building a firmware-free VideoBIOS for RISC-V.
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Second in a series on building a firmware-free VideoBIOS for RISC-V.
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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.
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This is the last development post for QRV.
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Since the project began, taskman has run in S-mode — the RISC-V supervisor mode, shared with the kernel.
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Two ambitious project branches emerged from the v0.27 milestone.
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Exactly two months ago today, on February 27, the project restarted. v0.27 is the milestone that closes that chapter.
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esh served its purpose.
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This is the follow-up to the earlier v0.25 post.
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That mount command works.
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QRV v0.24 is the NVMe release.
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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.
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50/50 clean boots on QEMU.
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It boots.
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Two evening sessions, about four to five hours each.
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We're progressing towards v0.21 steadily.
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v0.20 is the release where SMP stopped being a liability.
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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!
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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".