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ADW(4)			 BSD Kernel Interfaces Manual			ADW(4)

NAME
     adw -- Advansys PCI 16bit SCSI Host adapter driver

SYNOPSIS
     To	compile	this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device pci
	   device scbus
	   device adw

DESCRIPTION
     This driver provides access to the	16bit SCSI bus connected to the	Ad-
     vanced Systems Products, Inc.  ASC3550 Ultra, and ASC38C0800 Ultra2, SCSI
     Host Adapter chips.  Both chips support, synchronous transfers (20MHz and
     40MHz max respectively), 16bit transfers, tagged queueing,	and up to 253
     concurrent	SCSI transactions.

     Per target	configuration performed	in the AdvanceWare menu, which is ac-
     cessible at boot, is honored by this driver.  This	includes synchro-
     nous/asynchronous transfers, maximum synchronous negotiation rate,	wide
     transfers,	disconnection, tagged queueing,	and the	host adapter's SCSI
     ID.  The global setting for the maximum number of tagged transactions al-
     lowed per target is not honored as	the CAM	SCSI system will automatically
     determine the maximum number of tags a device can receive as well as
     guarantee fair resource allocation	among devices.

HARDWARE
     The adw driver supports SCSI controllers including:

     +o	 AdvanSys ABP940UW/ABP3940UW
     +o	 AdvanSys ABP950UW
     +o	 AdvanSys ABP970UW
     +o	 AdvanSys ABP3940U2W
     +o	 AdvanSys ABP3950U2W

SEE ALSO
     adv(4), cd(4), da(4), sa(4), scsi(4)

HISTORY
     The adw driver appeared in	FreeBSD	3.0.

AUTHORS
     The adw driver was	ported by Justin T. Gibbs from the Linux driver	writ-
     ten by Bob	Frey of	Advanced System	Products, Inc.	Many thanks to Advan-
     Sys for providing the original driver under a suitable license for	use in
     FreeBSD.

BSD				 July 14, 2004				   BSD

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | SEE ALSO | HISTORY | AUTHORS

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