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NAME    [Toc]    [Back]

     adw -- Advansys PCI 16bit SCSI Host adapter driver

SYNOPSIS    [Toc]    [Back]

     device pci
     device adw

     For one or more SCSI busses:
     device scbus

DESCRIPTION    [Toc]    [Back]

     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 respectively),
 16bit transfers, tagged queueing, and up to 253 concurrent SCSI

     Per target configuration performed in the AdvanceWare menu, which is
     accessible at boot, is honored by this driver.  This includes synchronous/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 automatically
 determine the maximum number of tags a device can receive as well
     as guarantee fair resource allocation among devices.

SEE ALSO    [Toc]    [Back]

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

AUTHORS    [Toc]    [Back]

     The adw driver was ported by Justin T. Gibbs from the Linux driver written
 by Bob Frey of Advanced System Products, Inc.	Many thanks to AdvanSys
 for providing the original driver under a suitable license for use in

HISTORY    [Toc]    [Back]

     The adw driver appeared in FreeBSD 3.0.

FreeBSD 5.2.1		       February 13, 2000		 FreeBSD 5.2.1
[ Back ]
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