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     ncv — NCR 53C500 based SCSI host adapter driver


     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



     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.


     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
        New Media Corporation BASICS SCSI
        Qlogic Fast SCSI
        RATOC REX-9530, REX-5572 (SCSI only)


     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.


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


     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.


     The ncv driver was written by Naofumi Honda.  This manual page was written by Tom Rhodes
     <> and Noriaki Mitsunaga <>.