piixpcib(4) [netbsd man page]

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

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.

     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 <jmcneill@NetBSD.org>.

BSD
								   March 1, 2011							       BSD

EAP(4)							   BSD Kernel Interfaces Manual 						    EAP(4)

NAME

     eap -- AudioPCI audio device driver

SYNOPSIS

     eap*   at pci? dev ? function ?
     audio* at audiobus?
     joy*   at eap?
     midi*  at eap?
     options EAP_USE_BOTH_DACS

DESCRIPTION

     The eap driver provides support for the Ensoniq AudioPCI and Creative Labs SoundBlaster PCI series of audio cards.  All models based on the
     ES1370, ES1371, and ES1373 chips are supported.

     By specifying:

	   options EAP_USE_BOTH_DACS

     a second audio device is attached.  You can use it simply by directing audio output to it.  This way it is possible for two different pro-
     grams to use the "same" audio device simultaneously.

SEE ALSO

     ac97(4), audio(4), joy(4), midi(4), pci(4)

HISTORY

     The eap device driver appeared in NetBSD 1.4.

CAVEATS

     The joystick port hardware works by emulating a legacy isa(4) joystick port, bypassing the pci(4) bus method for address allocation.  This is
     unlikely to work on PCI busses other than the primary one.  There is also a possibility for conflicts with real ISA devices because the PCI
     bus is probed before ISA.	Use with caution.

BSD
								   July 22, 2006							       BSD