LP(4)                                                                    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 characters are escaped according
       to the following table:

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

       The driver correctly interprets carriage returns, backspaces, 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 spec‐
       ifying, for example, ‘‘flags 256’’ .

FILES
       /dev/lp

SEE ALSO
       lpr(1)

DIAGNOSTICS
       None.



4th Berkeley Distribution        May 15, 1985                            LP(4)