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HP 48g Series Calculators - Trace Mode Printing

Calculator symbol key
The procedures in this document use the following text to represent symbol keys:
Key
Description
Text Representation
Right shift key
RS
Left-shift key
LS
Description
The following two programs, alphaENTER and betaENTER can be used on the HP 48g Series calculators. These programs provide a trace mode for the HP 48 using an external HP 82240A or HP 82240B Infrared Printer. To turn on trace mode, set flag -63 and activate User mode. To turn off trace mode, clear flag -63 or turn off User Mode.
  note:
These programs require the Greek letters alpha and beta. These characters can be accessed in the CHARS menu or by pressing RS, then A and RS, then B while in ALPHA mode.
  note:
Square brackets [ ] denote a key located on the keyboard, and vertical bars | | denote a menu key. The menu keys are the top row of white keys, with the corresponding function displayed in the blue boxes at the bottom of the display. RS denotes a right-shift (the green arrow key next to the number 1) and LS denotes a left-shift (the purple left arrow key next to the number 4).
Program Entry
Figure : Program for Trace Mode printing
  1. Change to the HOME directory (press RS, then HOME).
  2. Type in the alphaENTER program starting with the program delimiters (press LS, [< >]) All characters must be entered exactly as shown in the programs shown above. Upper case must be upper case and spaces must be included; use the menu keys for program commands (see Appendix G, in the 48g Series User's Guide, for the operation index).
  3. Press the ENTER key to put the program on the stack. (See chapter 29 to review programming in the HP 48G Series User's Guide.)
  4. Store the program:
    1. Press [ ' ]
    2. Press ALPHA, ALPHA to lock-in the alpha mode.
    3. Type the program name (alphaENTER).
    4. Press the ALPHA key once to unlock the alpha mode.
    5. Press STO.
        note:
      Press RS, then A to type the alpha character and RS, then B to type the beta character.
  5. Repeat steps 2 - 4 for the betaENTER program.
Instructions for printing in trace mode
  1. Key in both the programs listed above, alphaENTER and betaENTER.
  2. To turn on Trace mode: Set system flag -63; press 6, 3, [+/-], LS, MODES, FLAG, then SF. Turn on User mode: press LS, USER, LS, then USER
  3. To turn off Trace mode: Press LS, then USER or Clear flag -63; press 6, 3, [+/-], LS, MODES, FLAG, then CF
      note:
    Setting flag -63 and activating User mode turns on vectored ENTER. When vectored ENTER is turned on and variable ENTER exists, the command line text is put on the stack as a string and ENTER is evaluated. Then, if variable ENTER exists, the command that triggered the command-line processing is put on the stack as a string and ENTER is evaluated.

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