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AHA(4)			 BSD Kernel Interfaces Manual			AHA(4)

NAME
     aha — Adaptec SCSI host adapter driver

SYNOPSIS
     device aha0 at isa? port ? irq ? drq 5
     device scbus0 at aha0

DESCRIPTION
     This driver provides access to the SCSI bus connected to an Adaptec
     154xA, 154xB, 154xC, 154xCF, or 154xCP host adapter.  Host adapters sup‐
     porting a 154X compatible interface, such as some Tekram controllers and
     the Adaptec 174x in 154x emulation mode can also be attached with this
     driver.

     One kernel config 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 wild‐
     card, the driver consults an internal table of possible port address
     locations and attaches to the first unattached card it finds.  The possi‐
     ble port addresses for this card are 0x330, 0x334, 0x230, 0x234, 0x130,
     and 0x134.

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

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

BSD			       October 15, 1998				   BSD
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