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piixpcib(4) [netbsd man page]

PIIXPCIB(4)						   BSD Kernel Interfaces Manual 					       PIIXPCIB(4)

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. 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. The user can manually control the CPU frequency with the sysctl(8) program using the following node: machdep.speedstep_state = [0/1] SEE ALSO
est(4), isa(4), pci(4), apmd(8), sysctl(8) 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 <>. BSD
March 1, 2011 BSD

Check Out this Related Man Page

PCIC(4) 						   BSD Kernel Interfaces Manual 						   PCIC(4)

pcic -- Intel and Cirrus Logic PCMCIA controller driver SYNOPSIS
pcic0 at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000 flags N pcic1 at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000 flags N pcic* at isapnp? pcic* at pci? dev? function ? pcmcia* at pcic? controller ? socket ? DESCRIPTION
NetBSD provides support for the Intel 82365SL, Cirrus Logic PD6710 and PD672x PCMCIA controllers. For the isa(4) attachment a flags value of 1 can be used to force the use of polling instead of interrupts for card events. The default configuration of the pcic gives each controller 16 kilobytes of memory, to be shared between slots. Some PC Card devices require somewhat more memory than this; it may therefore be necessary to adjust the iomem and iosiz parameters of the pcic devices in the kernel con- fig file to accommodate these cards. SEE ALSO
isa(4), isapnp(4), pci(4), pcmcia(4), tcic(4) HISTORY
The pcic driver appeared in NetBSD 1.3. BSD
May 21, 1999 BSD
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