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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 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
     interrupts.  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 uses
     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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