4.3BSD-UWisc/man/cat4/lp.4

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LP(4)               UNIX Programmer's Manual                LP(4)



NAME
     lp - line printer

SYNOPSIS
     device lp0 at uba0 csr 0177514 vector lpintr

DESCRIPTION
     _L_p provides the interface to any of the standard DEC line
     printers on an LP-11 parallel interface.  When it is opened
     or closed, a suitable number of page ejects is generated.
     Bytes written are printed.

     The unit number of the printer is specified by the minor
     device after removing the low 3 bits, which act as per-
     device parameters.  Currently only the lowest of the low
     three bits is interpreted: if it is set, the device is
     treated as having a 64-character set, rather than a full
     96-character set.  In the resulting half-ASCII mode, lower
     case letters are turned into upper case and certain charac-
     ters are escaped according to the following table:

     {         -(
     }         -)
     `         -'
     |         -!
     ~         -^

     The driver correctly interprets carriage returns, back-
     spaces, tabs, and form feeds.  Lines longer than the maximum
     page width are truncated.  The default page width is 132
     columns.  This may be overridden by specifying, for example,
     ``flags 256'' .

FILES
     /dev/lp

SEE ALSO
     lpr(1)

DIAGNOSTICS
     None.














Printed 12/27/86          May 15, 1985                          1