NAME

     ncv — NCR 53C500 based SCSI host adapter driver

SYNOPSIS

     To compile this driver into the kernel, place the following lines in your kernel
     configuration file:

           device scbus
           device ncv

     Alternatively, to load the driver as a module at boot time, place the following line in
     loader.conf(5):

           ncv_load="YES"

DESCRIPTION

     The ncv driver provides access to the SCSI bus connected to an NCR 53C500 based PC-Card SCSI
     host adapter or an Adaptec AHA-2920 on the PCI bus.

HARDWARE

     The following devices are currently supported by the ncv driver:

     •   I-O DATA PCSC-DV
     •   KME KXLC002 (TAXAN ICD-400PN, etc.), KXLC004, and UJDCD450
     •   Macnica Miracle SCSI-II mPS110
     •   Media Intelligent MSC-110, MSC-200
     •   NEC PC-9801N-J03R
     •   New Media Corporation BASICS SCSI
     •   Qlogic Fast SCSI
     •   RATOC REX-9530, REX-5572 (SCSI only)

DIAGNOSTICS

     The following error messages are sometimes returned:

     SCSI BUS RESET failed  Usually returned when a failure occurs during the bus reset.

     CMD_NOP failed  No operation or the operation has failed.

     CMD_NOP|CMD_DMA  A failure occurred during the DMA read/write operations.

     The ncv driver should return [ENODEV] when any of the previously noted failures occur.

SEE ALSO

     cardbus(4), cd(4), da(4), pccard(4), sa(4), scsi(4)

HISTORY

     The ncv device driver has been developed for NetBSD/pc98 and ported to FreeBSD.  The ncv
     driver first appeared in FreeBSD 2.2 with PAO and merged in FreeBSD 4.2.

AUTHORS

     The ncv driver was written by Naofumi Honda.  This manual page was written by Tom Rhodes
     <trhodes@FreeBSD.org> and Noriaki Mitsunaga <non@FreeBSD.org>.