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NAME    [Toc]    [Back]

     sw - NCR 5380 SCSI Weird Sun 4/100 on-board SCSI controller

SYNOPSIS    [Toc]    [Back]

     sw0     at obio0 addr 0x0a000000 level 3 (sun4/100)
     #sw0      at  obio0  addr  0x0a000000  level  3  flags  0x07
     scsibus* at sw?

DESCRIPTION    [Toc]    [Back]

     The  sw  is  the Sun 4/100 on-board SCSI controller based on
the NCR 5380
     chip, found only on Sun 4/100 workstations.  The  sw  driver
is actually
     implemented as part of the si(4) driver.

DEVICE FLAGS    [Toc]    [Back]

     0x01          Use DMA (polled)
     0x02          Use DMA completion interrupts
     0x04          Allow disconnect/reconnect

     The  sw device flags may be OR'd together to enable any combination of the
     features listed above.  If no flags are specified,  the  device will use
     polled DMA by default.

SEE ALSO    [Toc]    [Back]

     cd(4),  ch(4),  esp(4),  intro(4),  scsi(4),  sd(4),  si(4),
ss(4), st(4),

HISTORY    [Toc]    [Back]

     The sw driver first appeared in NetBSD.

BUGS    [Toc]    [Back]

     The sw driver only supports polled DMA at this time.

OpenBSD     3.6                           March      4,      1998
[ Back ]
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