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NAME    [Toc]    [Back]

     aha -- Adaptec SCSI host adapter driver

SYNOPSIS    [Toc]    [Back]

     device aha
     device scbus

     In /boot/device.hints:

DESCRIPTION    [Toc]    [Back]

     This driver provides access to the SCSI bus connected to an Adaptec
     AHA-154xA, AHA-154xB, AHA-154xC, AHA-154xCF, AHA-154xCP, or AHA-1640 host
     adapter.  x is 0 for controllers without a floppy drive and 2 for controllers
 that have them.  Host adapters supporting a 154x compatible
     interface, such as some Tekram controllers and the Adaptec AHA-174x in
     154x emulation mode can also be attached with this driver.  For optimum
     performance, Adaptec AHA-174x controllers should be configured in
     enhanced mode and attached via the ahb(4) driver.

     One device hint entry for every card to be attached by the system is
     required.	Specific values for the port address, irq, and drq may be
     specified.  If wildcard values are used, the driver will query the device
     for its current settings and use those.  If the port address is a wildcard,
 the driver consults an internal table of possible port address
     locations and attaches to the first unattached card it finds.  The possible
 port addresses for this card are 0x330, 0x334, 0x230, 0x234, 0x130,
     and 0x134.

     The AHA-154xCP is a plug and play controller.  However, its resources are
     set using the on-board BIOS and cannot be moved.  Failures to attached
     for this card are often caused when the resources set in the BIOS conflict

     The AHA-1640 is a MCA bus card.  Since the MCA bus is a self-identifying
     bus, no setting of hints is required.

SEE ALSO    [Toc]    [Back]

     ahb(4), ahc(4), aic(4), cd(4), da(4), sa(4), scsi(4)

AUTHORS    [Toc]    [Back]

     The aha driver was ported by M. Warner Losh from the bt driver written by
     Justin T. Gibbs.

FreeBSD 5.2.1		       October 15, 1998 		 FreeBSD 5.2.1
[ Back ]
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