NAME

     ct — WD33C93[ABC] based CBUS SCSI host adapter driver

SYNOPSIS

     device ct
     device scbus

     In /boot/device.hints:

     For most PC-9801-55, -92 and compatibles:
     hint.ct.0.at="isa"

     For ELECOM bus-master SCSI adapters:
     hint.ct.0.at="isa"
     hint.ct.0.flags="0x30000"

     For I-O DATA SC98 adapters:
     hint.ct.0.at="isa"
     hint.ct.0.flags="0x10000"

     For LOGITEC adapters:
     hint.ct.0.at="isa"
     hint.ct.0.flags="0x50000"

     For TEXA adapters:
     hint.ct.0.at="isa"
     hint.ct.0.flags="0x20000"

     For adapters with SMIT transfer mode to enable SMIT transfer:
     hint.ct.0.at="isa"
     hint.ct.0.flags="0x40000"
     hint.ct.0.maddr="0xdc000"

     Flags meaning:
           0x00000   DMA transfer mode for an NEC PC-9801-55, -92 (or compatibles), ICM IF-2660,
                     Midori-Denshi MDC-554NA, or Logitec LHA-N151
           0x10000   DMA transfer mode for an I-O DATA SC-98II
           0x20000   bus-master transfer mode for a TEXA HA-55BS2, its successors, or Midori-
                     Denshi MDC-926R
           0x30000   bus-master transfer mode for an ELECOM bus-master SCSI adapter
           0x40000   SMIT transfer mode (for supported adapters only)
           0x50000   bus-master transfer mode for a Logitec LHA-20x series, ICM IF-2766,
                     IF-2766ET, IF-2767 or IF-2769

DESCRIPTION

     The ct driver provides access to the SCSI bus connected to a WD33C93[ABC] based host
     adapter.

HARDWARE

     The ct driver supports the following adapters:

     •   ELECOM bus-master SCSI adapters
     •   I-O DATA SC-98II
     •   ICM IF-2660, IF-2766, IF-2766ET, IF-2767 and IF-2769
     •   Logitec LHA-N151 and LHA-20x series
     •   Midori-Denshi MDC-554NA and MDC-926R
     •   NEC PC-9801-55, 92 and compatibles
     •   SMIT transfer type SCSI host adapters
     •   TEXA HA-55BS2 and its later models

SEE ALSO

     cd(4), ch(4), ctau(4), da(4), intro(4), sa(4), scsi(4)

NOTES

     Historically, the driver for the Cronyx Tau WAN adapters was “ct”.  This device name was
     changed to “ctau” to avoid conflicts with this pc98 ct driver.  The network device name for
     ctau(4) is “ct”.  Please see ctau(4) for the details for that device.

HISTORY

     The ct device driver has been developed for NetBSD/pc98 and ported for FreeBSD.  It first
     appeared in FreeBSD 4.4.

AUTHORS

     The ct driver was written by Naofumi HONDA.

     This manual page was written by Noriaki MITSUNAGA <non@FreeBSD.org> and Hideyuki KURASHINA
     <rushani@FreeBSD.org>.