CT(4)							 BSD/i386 Kernel Interfaces Manual						     CT(4)

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:

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

BSD
								 November 18, 2003							       BSD