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ADW(4)		       FreeBSD Kernel Interfaces Manual			ADW(4)

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

SYNOPSIS
     device pci
     device adw

     For one or	more SCSI busses:
     device scbus0 at adw0

DESCRIPTION
     This driver provides access to the	16bit SCSI bus connected to the
     Advanced Systems Products,	Inc.  ASC3550 Ultra, and ASC38C0800 Ultra2,
     SCSI Host Adapter chips.  AdvanSys	products incorporating these chips
     include the ABP[3]940UW, ABP950UW,	ABP970UW, ABP3940U2W, and ABP3950U2W.
     Both chips	support, synchronous transfers (20MHz and 40MHz	max respec-
     tively), 16bit transfers, tagged queueing,	and up to 253 concurrent SCSI
     transactions.

     Per target	configuration performed	in the AdvanceWare menu, which is
     accessible	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
     allowed per target	is not honored as the CAM SCSI system will automati-
     cally determine the maximum number	of tags	a device can receive as	well
     as	guarantee fair resource	allocation among devices.

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

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.

HISTORY
     The adw driver appeared in	FreeBSD	3.0.

FreeBSD	10.1		       February	13, 2000		  FreeBSD 10.1

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

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