ecpp.conf revision dcd3dacad308865c548b11e858fbdec783ec2a72
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# Copyright 2006 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
#
#ident "%Z%%M% %I% %E% SMI"
# When fast-centronics is set to "true", handshaking between the
# driver and the peripheral is conducted by hardware. For some
# Centronics devices the hardware handshaking is too fast for the
# peripheral. To slow down the handshaking, fast-centronics must
# be set to "false". By default fast-centronics is set to "false".
# When fast-1284-compatible is set to "true", IEEE 1284 compliant
# devices operating in Compatibility mode will have the parallel port
# handshaking controlled by the hardware. When it is set to "false"
# handshaking is PIO controlled by the driver. By default
# fast-1284-compatible is set "true".
# Some Centronics devices require the Init signal to be toggled upon
# power-up. The application should do this directly with ioctl(2) interface
# as specified in ecpp(7d). As an alternative to using the API, the driver
# may be configured to toggle the nInit signal upon every time the device
# is opened. If centronics-init-seq is set to "true" the Init signal
# will be toggled when the device is opened. The default is "false".
# When the ecpp driver detects a Centronics device is in an error state,
# ecpp will re-examine the device every centronics-retry milliseconds.
# The default is 750 milliseconds.
# Some Centronics printers continue to assert BUSY after the ACK pulse.
# The driver waits for centronics-wait-for-busy microseconds for a
# desertion of BUSY before it queues the current data transfer.
# The default is 5000 microseconds (5ms).
# Devices that are not using fast handshaking may adjust the data setup
# time and the strobe pulse width. The Centronics specification states that
# each must be at least 1 microsecond. The default values are set to
# 2 microseconds to ensure reliable transfers.
# The ecpp driver waits ecpp-transfer-timeout seconds before it aborts
# the current transfer and put the untransferred data back on the queue.
# The default value for ecpp-transfer-timeout is 90 seconds.
# The following note applies to x86 platforms only
# If a system has a standard parallel port, but not enumerated
# in the device tree, you may gain access to the port by uncommenting
# the following lines and run "update_drv ecpp".
#
# name="lp" parent="/isa" interrupts=7 reg=1,0x378,0x8;