TC(4) | Kernel Interfaces Manual | TC(4)

# NAME

tc — TURBOchannel expansion bus driver

# SYNOPSIS

## alpha

tc* at tcasic?

## pmax

tc* at mainbus0

# DESCRIPTION

The tc driver provides machine-independent support for the DEC TURBOchannel expansion bus found on all DEC 5000-series machines with MIPS and DEC 3000-series with Alpha processors.

Your system may support additional TURBOchannel devices. Drivers for TURBOchannel devices not listed here are machine-dependent. Consult your system's intro(4) for additional information.

# HARDWARE

NetBSD includes machine-independent TURBOchannel drivers, sorted by device type and driver name:

## SCSI interfaces

asc
  PMAZ-A single-channel SCSI adapter
tcds
  PMAZ-DS, PMAZ-FS, PMAZB-AA and PMAZC-AA dual-channel SCSI adapters

## Network interfaces

fta
  PMAF-F DEFTA FDDI controller
le
  LANCE Ethernet interface

## Frame buffers

cfb
  PMAG-B CX colour unaccelerated 2-D framebuffer
mfb
  PMAG-A MX monochrome framebuffer
px
  PMAG-C PX accelerated graphics boards
pxg
  PMAG-D, PMAG-E and PMAG-F PXG accelerated graphics boards
sfb
  PMAGB-BA HX colour unaccelerated 2-D framebuffer
tfb
  PMAG-J TX 24-bit colour unaccelerated 2-D framebuffer

## Miscellaneous

ioasic
  baseboard IO control ASIC for DEC TURBOchannel systems

# SEE ALSO

asc(4), cfb(4), fta(4), intro(4), ioasic(4), le(4), mfb(4), px(4), pxg(4), sfb(4), tcds(4), tfb(4)

# HISTORY

The tc driver first appeared in NetBSD 1.1.

# BUGS

The tc driver makes poor use of interrupt priority on the 5000/1xx series systems.

September 12, 2001 | NetBSD 6.0