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PUC(4)		       FreeBSD Kernel Interfaces Manual			PUC(4)

NAME
     puc -- PCI	``Universal'' Communications driver

SYNOPSIS
     device pci
     device puc
     device sio
     options PUC_FASTINTR

DESCRIPTION
     This driver acts as a shim	to connect pci serial ports to the sio(4)
     driver.

     The list of supported devices is in src/sys/dev/puc/pucdata.c. Support
     for new cards should be added there.

     If	the PUC_FASTINTR option	is used	the driver will	try to use fast	inter-
     rupts.  This should lower the interrupt latency and should	be used	if the
     sio(4) driver reports silo	overflow errors.  It cannot be used if the
     interrupt is shared.

SEE ALSO
     sio(4)

HISTORY
     This driver took the idea from the	NetBSD puc(4) driver and still use the
     same structure to describe	cards to ease exchanging card info.

BUGS
     Only serial ports are supported through the sio(4)	driver at the moment.
     Someone should write support for parallel ports using the lpt(4) driver.

FreeBSD	11.1		       February	7, 2002			  FreeBSD 11.1
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | BUGS

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