hubertf's NetBSD Blog
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[20140903] NetBSD running on OpenRISK 1000 CPUs
Matt Thomas posted that he has updated the NetBSD toolchain and build system to build the userland for the OpenRISK 1000 CPU, and will work on the kernel next. From Wikipedia: ``OpenRISC is the original flagship project of the OpenCores community. This project aims to develop a series of general purpose open source RISC CPU architectures. The first (and currently only) architectural description is for the OpenRISC 1000, describing a family of 32 and 64-bit processors with optional floating point and vector processing support.''

To start playing, use Qemu v1.2 or have a look at the available Javascript emulator.

Who's the first to give me an URL of the emulator running NetBSD in my webbrowser? :)

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[20090507] Throttling the CPU to reduce fan noise
On netbsd-users, Cem Kayali has posted a script to adjust the CPU frequency according to the system temperature, and thus reduce fan noise. This is different from pkgsrc's estd, which just adjusts the CPU speed according to the system load, so it's quite the contrary. Cem uses the envstat(4) framework to determine CPU temperature, and then slows the CPU down with sysctl(1).

An alternative approach was suggested by Jeremy Reed, which hints at the powerd(8) script hooks that can be set to act on corresponting ACPI Thermal Zone (acpitz) events. See Jeremy Reed's blog posting for a few more ideas, plus a hint that this may become documented even better in the future.

While there: At his website, Jeremy has a number of open questions around NetBSD, and I guess answering them would be good for mankind. Any takers?

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'nuff. Grab the RSS-feed, index, or go back to my regular NetBSD page

Disclaimer: All opinion expressed here is purely my own. No responsibility is taken for anything.

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