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AHA(4)		       FreeBSD Kernel Interfaces Manual			AHA(4)

     aha -- Adaptec SCSI host adapter driver

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

     This driver provides access to the	SCSI bus connected to an Adaptec 1510,
     152x, 1535, 154xA,	154xB, 154xC, 154xCF, 154xCP, or 164x host adapter.
     Host adapters supporting a	154x compatible	interface, such	as some	Tekram
     controllers and the Adaptec 174x in 154x emulation	mode can also be
     attached with this	driver.	 For optimum performance, Adaptec 174x con-
     trollers should be	configured in enhanced mode and	attached via the
     ahb(4) 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.

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

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

FreeBSD	4.11		       October 15, 1998			  FreeBSD 4.11


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