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lp(4) [bsd man page]

LP(4)							     Kernel Interfaces Manual							     LP(4)

NAME

       lp - line printer

SYNOPSIS

       /sys/conf/SYSTEM:
	    NLP        lp_printers  # Line Printer
	    LP_MAXCOL  132	    # Maximum number of columns on line printers

       /etc/dtab:
	    #Name Unit# Addr   Vector Br Handler(s)	 # Comments
	    lp	  ?	177514 200    4  lpintr 	 # lp-11 line printer

       major device number(s):
	    raw: 5
       minor device encoding:
	    bit 01 specifies 64-character set (instead of 96-character set)
	    bits 06 are reserved
	    bits 0370 specify line printer unit: <lp_unit> * 8

DESCRIPTION

       Lp 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.   Cur-
       rently  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 trun-
       cated.  The page width is specified via the LP_MAXCOL definition, set to 132 in the GENERIC distribution.

FILES

       /dev/lp
       /dev/MAKEDEV	   script to create special files
       /dev/MAKEDEV.local  script to localize special files

SEE ALSO

       lpr(1), dtab(5), autoconfig(8)

DIAGNOSTICS

       None.

BUGS

       Although the driver supports multiple printers this has never been tried.

3rd Berkeley Distribution					 January 28, 1988							     LP(4)

Check Out this Related Man Page

TS(4)							     Kernel Interfaces Manual							     TS(4)

NAME

       ts - TS-11 magtape interface

SYNOPSIS

       /sys/conf/SYSTEM:
	    NTS  ts_drives	# TS11

       /etc/dtab:
	    #Name Unit# Addr   Vector Br Handler(s)	 # Comments
	    ts	  ?	172520 224    5  tsintr 	 # ts11 driver

       major device number(s):
	    raw: 8
	    block: 2
       minor device encoding:
	    bits 0003 specify TS drive
	    bit  0004 specifies no-rewind operation
	    bit  0010 ignored

DESCRIPTION

       The  ts-11 combination provides a standard tape drive interface as described in mtio(4).  The ts-11 operates only at 1600 bpi, and only one
       transport is possible per controller.

FILES

       /dev/MAKEDEV	   script to create special files
       /dev/MAKEDEV.local  script to localize special files

SEE ALSO

       mt(1), tar(1), tp(1), mtio(4), ht(4), tm(4), dtab(5), autoconfig(8)

DIAGNOSTICS

       ts%d: no write ring.  An attempt was made to write on the tape drive when no write ring was present; this message is written on the  termi-
       nal of the user who tried to access the tape.

       ts%d:  not  online.   An  attempt was made to access the tape while it was offline; this message is written on the terminal of the user who
       tried to access the tape.

       ts%d: hard error bn%d xs0=%b xs1=%b xs2=%b xs3=%b.  A hard error occurred on the tape at block bn; status  registers  0-3  are  printed	in
       octal and symbolically decoded as bits.

       ts%d: addr mod 4 != 0.  The address of a TS-11 command packet was not on an even longword boundary.

BUGS

       If any non-data error is encountered on non-raw tape, it refuses to do anything more until closed.

       The device lives at the same address as a tm-11 tm(4).

3rd Berkeley Distribution					 January 28, 1988							     TS(4)
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