*nix Documentation Project
·  Home
 +   man pages
·  Linux HOWTOs
·  FreeBSD Tips
·  *niX Forums

  man pages->OpenBSD man pages -> pcppi (4)              



NAME    [Toc]    [Back]

     pcppi - PC (ISA) control and timer port driver

SYNOPSIS    [Toc]    [Back]

     pcppi*   at isa?
     isabeep* at pcppi? (alpha only)
     sysbeep* at pcppi? (cats and i386 only)
     spkr0    at pcppi?
     midi*    at pcppi?

DESCRIPTION    [Toc]    [Back]

     The pcppi driver handles resource allocation and device  attachment for
     the  ports  related  to  the  ISA speaker in the traditional
PC/AT ``design''.
     These are the ``system control port'' (which was implemented
by the 8255
     ``PPI''  in the XT, hence the name of this driver) at IO address 0x61 and
     the first 8253 timer at 0x40-0x43.

     The pcppi driver provides its child devices with the ability
to output
     simple tones through the PC speaker.  The speaker(4) and midi(4) devices
     use this to synthesize sounds.  The isabeep and sysbeep  devices are
     helpers  used  by  the pckbd(4) driver as a substitute for a
     beep'', because the PC  keyboard  hardware  doesn't  provide

SEE ALSO    [Toc]    [Back]

     intro(4), isa(4), midi(4), pckbd(4), speaker(4)

OpenBSD      3.6                           April      1,     2002
[ Back ]
 Similar pages
Name OS Title
wdt OpenBSD ICS PCI-WDT500/501 watchdog timer device driver
lpt OpenBSD parallel port driver
iopsp OpenBSD I2O SCSI port driver
pms OpenBSD PS/2 auxiliary port mouse driver
pmsi OpenBSD PS/2 auxiliary port mouse driver
ppc FreeBSD Parallel Port Chipset driver
plip FreeBSD printer port Internet Protocol driver
lp FreeBSD printer port Internet Protocol driver
mac_portacl FreeBSD network port access control policy
rp FreeBSD driver for Comtrol RocketPort Intelligent Serial Port Cards
Copyright © 2004-2005 DeniX Solutions SRL
newsletter delivery service