INPRT.TXT File

                    (c)  Hewlett-Packard Company, 1990


OVERVIEW
--------

The INPRT application reads infrared (IR) printer output from different
Hewlett-Packard calculators into the HP 48 stack.  INPRT assumes that the
incoming bytes would print with the Roman 8 character set on an HP 82240
printer, and it remaps these bytes to the HP 48 character set (ISO 8859
Latin 1).


PROCEDURE
---------

These are the steps for transferring IR printer output to the HP 48:

 1.  Transfer the INPRT file from your computer to the HP 48. (Use binary 
     if you're transferring INPRT from the HP 48.) The {INPRT} menu label
     will  show up in your HP 48 VAR menu. (If your calculator has a double-
     spaced print mode, set it to single-spaced print.)

 2.  Line up the calculators.  (See "Alignment Instructions" below.)

 3.  Press {INPRT} on the HP 48.  (INPRT terminates in 10 seconds if no IR
     output is received.)

 4.  Execute the print command on the other calculator.

 5.  Repeat steps 2 through 4 as needed to transfer additional output.

RESULTS
-------

When the transfer is complete, the HP 48 returns the received data to the
stack in the form of a string to level 2 and a flag to level 1.  If the flag
is 0, uncorrectable transfer errors were detected; if the flag is 1, there
still may be missing bytes. The 1 means that each byte that was detected was
received correctly.  You should still check the received data since there
may be a linefeed in strings, names, expressions, etc. more than 24
characters long. If the flag is 0, each byte that was not correctable is a gray
blot (character number 127) in the level 2 string.


ALIGNMENT INSTRUCTIONS
----------------------

The transmitting calculatar's LED must be aligned with the HP 48's photo-
transistor, which is lacated at the tap end of the HP 48, in line with the
first T in the HEWLETT part of the HEWLETT-PACKARD logo.  The calculators
should be no more than 0.5 inches (1.3 cm) apart for the transmission.  Also,
other alignment issues apply to several calculators, as follows:

  o  For the HP 41:  The IR printer module should be in one of the top
     ports, and the shiny "IR cone" in the center of the module should be 
     aligned with the HP 48's small triangular indicator abave the display.

  o  For the HP 27S, HP 17B, and HP 42S:  The calculator must be raised 0.3
     inches (0.75 cm). The center of the LED (which is located at the top end 
     of the calculator in line between the E and W of HEWLETT) should be 
     aligned with the HP 48's small triangular indicatar above the display.

  o  For the HP 28, HP 18C, and HP 19B:  Just line up the calculator's LED 
     with the HP 48's small triangular indicator abave the display.