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DMPNEW.DOC
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1990-10-31
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DMPNEW.DOC - revision 2.03 - This file updated 31-Oct-1990.
Changes since DMP revision 2.02:
1. Parallel port output speed adjustment. The commands for this new
function are described in the parallel printer output section of the
manual.
The parallel port output speed has been increased to allow faster
output for laser printers and output to print buffers. Also, DMP will
now adjust it's output speed to match your printer while it is sending
data to the printer.
A new parameter has been added to the parallel printer command to
allow adjustment of the output speed, if needed. The syntax for the
parallel printer command is now: "/LPTx:nn". x is the printer
number, as in prior versions of DMP. nn is a number from 0 to 99
corresponding to the maximum output speed. Both the "x" and the "nn"
parameters are optional. LPT1 is used if none is specified. The
default speed setting is 75. It is rarely necessary to adjust the
speed setting, as it is "tuned" while printing.
The display now shows the current speed setting and the maximum
speed. The maximum speed is the one you can select with this command,
with the default value of 75. The current speed starts out with a
value of 20. The current speed will not change until something is
sent to the printer, and it will not be greater than the maximum that
your printer can accept.
The two situations in which you might want to change the maximum
speed setting are:
-The printer goes full speed, but the computer does not run smoothly
while printing. This can be important if you are running a commun-
ications program and a slowdown is noted or characters are missed
while printing. Slow the printing by using a lower maximum speed.
-Your computer performs fine, but the printer is at less than full
speed. Set the maximum higher. More CPU time will be used for
printing. This will probably not be noticeable on faster computers.
2. Improved serial port output speed.
The output for a serial port printer was improved for compatibility
with PS/2 computers and faster output for laser printers.
3. New options for the PF "Print File" utility. These commands are not
in the manual.
The PF utility normally sends a form-feed character to the printer
after each file printed. This function can now be turned off and back
on in the command line. The commands are "/F-" and "/F+" for off and
on, respectively. Do not type the quotes.
Files or filespecs on the command line after "/F-" are printed
without a form-feed. If a "/F+" is encountered, following files will
be printed with a form-feed. Example:
PF ABC.TXT /F- DEF.TXT /F+ GHI.TXT.
File ABC.TXT is printed, the page is ejected, files DEF.TXT and
GHI.TXT are printed with no form-feed between, and a form-feed follows
GHI.TXT.
4. Using DMP with Himem.Sys or other XMM extended memory driver.
Several inquiries have been received concerning the operation of
DMP with XMM drivers, including use of the HMA. Popular XMM drivers
include Himem.Sys, Qemm, and 386Max. The latest versions of these
programs provide considerable control over the memory in 286 and
especially 386 computers in addition to the XMM driver functions. DMP
will use only the XMM compatible functions of these drivers.
Himem.Sys version 2.06 is included with the distribution disk for DMP.
If you have a newer version of Himem or any version of another driver
that supports XMM, use your own driver instead.
If you want DMP to use extended memory with the XMM driver, refer
to the section in the manual on extended memory spooling. The
technical section near the end of the manual also gives some details
about spooling to extended memory and use of the HMA.
The resident size of DMP has increased by about 1k bytes. This
includes the changes described above, plus some additional functions
that will be used in the next version.