Using the Paper Tape Printer
RPN-65's paper tape printer emulates the HP-97's printer and adds a few twists.
The tape can hold up to 999 lines; older lines are dropped.
When using the printer, whether you are in MAN or NORM modes (where you must press Print x) or in TRACE mode (where RPN-65
automatically prints results), printed numbers can be shown in any display format – fixed point or scientific notation. By selecting the display format, you also select the print format.
Numbers that you key in – that is, numbers that are not the results of operations – are also printed. When you key in a number with the Print Mode switch set to NORM or TRACE, RPN-65 does not
print it until you change display format or press a function key. Then the number is printed exactly as you keyed it in. A number that you keyed in is not the result of an operation, and no asterisks are
printed to its right.
When you have keyed in a number, there is one time that the RPN-65 will change its format before printing. If you have specified fixed point notation and the number keyed in is also in
fixed point format (i.e., you have not pressed EEX), RPN-65 will attempt to align the decimal points for easy readability on your printed copy. It will do this in fixed point
notation by printing the number that you keyed in in the specified format (if the number can be printed without truncating), adding trailing zeros if necessary. This feature permits you to key in numbers
in fixed point notation and line up the decimal points in the printed record of your calculations.
RPN-65 supports the HP-97's MAN, TRACE, and NORM printing modes:
With the Print Mode switch set to MAN (manual), the printer is idle and does not print unless you press the Printx key or one of the other PRINT functions.
With the Print Mode switch set to TRACE, the calculator prints numbers, functions, and intermediate and final answers, just as they are seen in the display.
The results of functions are printed with the symbol *** to the right of the number .
With the Print Mode switch set to NORM (normal), the calculator records a history of the calculation sequence so that you can reconstruct your problem.
In this mode you see digit entries and functions, but intermediate and final answers are not printed unless you press the Printx key.
When running a program in NORM and TRACE mode, RPN-65 also prints information about subroutine levels (see second screenshot at right.)
The number at the left indicates the step where program flow will continue when the next RTN statement is encountered. No number means program execution will stop with the next RTN statement.
Nested subroutines (available in Plus mode) are displayed by indenting the step number according to the nesting level.
To advance the printer paper, tap the paper advance button at the bottom. Hold the button down to advance several lines.
To quickly scroll to the beginning or the end of the printout, tap the arrow button at the top.
With the calculator mode switch set to W/PRGM, the paper tape printer's Printx button gets renamed to P Pgm.
With the calculator mode switch set to RUN in modes UI and Plus, you can use the PRINT PRGM command (f⁻¹ CLx).
The currently stored program will be printed as follows:
Print Mode switch set to MAN:
The printer lists step number, operation, and keycode for each step of program memory. The print range starts at the first non-NOP instruction from the current step
and ends at the last non-NOP step in program memory (as defined by the current "Enhancements" settings.) All NOPs inside this range will be printed.
Print Mode switch set to NORM or TRACE:
The printer lists only the step number and instruction, omitting the keycode. This type of listing is useful for preserving a record of your program without the keycodes.
The start of the print range is defined as in MAN mode, but printing will stop on the third NOP in succession.
In Vintage mode, printing stops after each NOP command. The step counter is automatically increased, allowing you to step through program memory by repeatedly tapping the
P Pgm key.
If Print Program is executed by a program, the listing starts with the first instruction in program memory not being a NOP.
Printing Display Value, Stack, and Registers
With the printer turned on and visible, commands like f⁻¹ REG, f⁻¹ STK and f -x- (available in UI and Plus modes)
will execute much faster because values do not have to be shown on the display.
Changing the Ribbon Color / Printing Negative Results in Red
You may select a blue or black ribbon in Settings.
In addition, you specify negative results to be printed in red.
Editing the Paper Tape
Swipe left on a paper tape line to delete it. You can also insert an empty line above a line, or paste text
created by the TXT button.