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Overview:Streaming Line PRinter (SLPR.PDR) is a streaming port driver used to connect your computer to a printer
or print server via a TCP/IP connection. The driver uses Line Printer Daemon
(LPD) Protocol as specified in RFC 1179. This protocol is an almost universal
way to send print data to printers and servers. It is meant to be used
as a alternative to the \PIPE\LPD0 (henceforth LPD0) port driver which
is shipped with OS/2.
Some advantages of SLPR.PDR:
Due to an incompatibly with older levels of the spooler you must be at or above the specified level as shown in the table below:
OS/2 Version Minimum FixPak Level Warp 3 44 Warp 4 16 Warp server for E Business 3 ACP1 2 MCP1 2
You can find the upgrade at: http://service5.boulder.ibm.com/pspfixpk.nsf
If you do not want the entire FixPak then you will need to find and replace the file PMSPL.DLL which resides in \OS2\DLL of the boot drive with the new version from the proper FixPak. Since the file is normally locked you will need to do the following:
Installation:
The SLPR port driver package SLPR.EXE is a self extracting zip file consisting of:
To Install SLPR:
Printer Destination is where you want the printer job or data to go to. This can be either an actual printer with a network card or a print server running LPD protocol. If your print server is an OS/2 machine you might want to attach using the network printer - it can provide more feedback from the server as well as allowing transmission of metafiles which are smaller and faster to send. If your server is not OS/2 or Windows, or you are going direct to a printer SLPR is the way to go.
LPD Server is the actual host name URL or IP address of the destination printer or print server. This can be either URL format \\myprinter.mycompany.com or actual IP address 9.67.96.17Port Name - this is actual name of of the port. It is in the format of SLPRx where x starts at one (1)and increments with each port you add.LPD printer is the actual printer on the printer or queue if you going to a print server. If you are going direct to a printer and there is only one queue defined (typically the default) you can use RAW in this field. If there is more than one queue defined on the printer see your system Administrator for what to put in.
High Performance - This controls whether port driver can send the print data as soon as
it gets it from the application. Older printer network cards or some LPD
programs can not handle streaming data. They need to know the actual size
of all the print data for the job. Since the application or spooler does
not know the size of the data until it all the job is generated the entire
print job must be stored on the computer before it can be sent. With newer
network cards you can send the data as it generated then tell the card
when you are done. This way the overhead of storing the entire job is eliminated.
This feature is very good for print servers since they are getting and
sending a lot of jobs constantly. The default is off since sending steaming
data to a destination that can not accept will result in a missing print
job.
One way to find out whether your destination can accept streaming data
is to leave the option off, and send a job to the target. This is to make
sure you destination is filled out and everything else is in working order.
Once that works turn on High Performance and try again. If it works you
are set. If it doesn't work do not give up yet. Many printer network cards
can be upgraded to the latest levels which might support streaming. Check
your printer manufacturers web site to see if a downloadable upgrade is
available.
Print Timeout - When the port driver expects a response from the destination it will wait this many seconds before alerting the user with a pop-up. If for some reason you are getting to many pop-ups increase this number. Remember if you are out of paper or there is a paper jam you will have to wait the time-out amount.
Other Notes
In order to get the best performance Printer-specific format on Queue options in the Print Object Properties dialog should not be checked on. Of course if you had reason to turn on by all means leave it on. If you destination supports streaming you can turn on Print while spooling on Queue options in the Print Object Properties dialog. This allows the spooler to start sending data before the whole job has spooled. If you turn off High Performance then SLPR will turn off Print while spooling since it must wait for the whole job anyway.
You can change the values of the port connection once installed by double clicking on the port icon of interest.
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