ct

CT(4) FreeBSD/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 compati-
bles), 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 succes-
sors, 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 <nonATFreeBSD.org> and
Hideyuki KURASHINA <rushaniATFreeBSD.org>.

FreeBSD 6.2 November 18, 2003 FreeBSD 6.2

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