PIIXPCIB(4)

📦 version 11.0, in nixpkgs unstable

🎀 PIIXPCIB(4) 🎀

Intel PIIX4 PCI-ISA bridge with SpeedStep

okay bestie, this is the PIIXPCIB(4) page from the Kernel Interfaces Manual — yes, the manual name is right there, we are not doing the boring header-copy thing 💅.

✨ NAME ✨

piixpcib — Intel PIIX4 PCI-ISA bridge with SpeedStep

🦋 SYNOPSIS 🦋

piixpcib* at pci? dev ? function ?
isa* at piixpcib?

🌸 DESCRIPTION 🌸

The piixpcib driver provides support for the Intel PIIX and compatible PCI-ISA Bridges with Intel's first generation SpeedStep. it's giving vintage power-management realness, no cap.

Frequency scaling is supported on Pentium III with two voltage modes, used by SpeedStep as power states low and high. The driver will switch into low power state by reducing voltage and frequency of the CPU. The factor depends on the processor itself, but will always reduce power consumption about 1/2.

You can manually control the CPU frequency with the sysctl(8) program using this node:

machdep.speedstep_state = [0/1]

💜 SEE ALSO 💜

🌈 HISTORY 🌈

The piixpcib driver first appeared in FreeBSD 5.5 and then in NetBSD 4.0.

👑 AUTHORS 👑

The current piixpcib driver was written by Bruno Ducrot. It was ported to NetBSD by Jared D. McNeill <jmcneill@NetBSD.org>.

okay bye bestie 💖 source/version is Debian, dated March 1, 2011, and the page is literally PIIXPCIB(4) — slay.

📦 where this page comes from