TC(4) | Device Drivers Manual | TC(4)

# NAME

`tc` — TURBOchannel expansion bus driver

# SYNOPSIS

## alpha

`tc* at tcasic?`

## pmax

`tc* at mainbus0`

## vax

`tc0 at vsbus0`

# DESCRIPTION

The `tc` driver provides machine-independent support for the DEC TURBOchannel expansion bus found on all DEC 5000-series machines with MIPS, DEC 3000-series with Alpha processors and VAXstation 4000 machines with the optional TURBOchannel adaptor.

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

tcds(4)
  PMAZ-DS, PMAZ-FS, PMAZB-AA and PMAZC-AA dual-channel SCSI adapters

## Network interfaces

le(4)
  LANCE Ethernet interface

## Frame buffers

cfb(4)
  PMAG-B CX colour unaccelerated 2-D framebuffer
mfb(4)
  PMAG-A MX monochrome framebuffer
px(4)
  PMAG-C PX accelerated graphics boards
pxg(4)
  PMAG-D, PMAG-E and PMAG-F PXG accelerated graphics boards
sfb(4)
  PMAGB-BA HX colour unaccelerated 2-D framebuffer
tfb(4)
  PMAG-J TX 24-bit colour unaccelerated 2-D framebuffer

## Miscellaneous

ioasic(4)
  baseboard IO control ASIC for DEC TURBOchannel systems
tcu(4)
  TC-USB USB host and GPIO option

# SEE ALSO

intro(4), tc(9)

# 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.

February 26, 2021 | NetBSD 11.0