Using the HELP Function


The HELP function enables you to determine current parameter settings and reset any parameters that are not currently set to their normal settings. When all parameters are set to their normal settings, the calculator is in the "normal" mode.



The HELP Menu

When you press the [ HELP ] key, the calculator clears the t-register and any calculation in progress. All error conditions are cleared. Scientific notation display format and the Alpha mode are also cancelled. The calculator then displays the following menu.

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Setting the Normal Mode

If you select { ESC }, you escape from the HELP function and clear the display. No other settings are changed. If you select { YES }, the HELP function sets all system parameters except those related to printer setup (printer device number, print width, and trace) to their normal settings and shows the following display:

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If you want to set the printer-related parameters or selectively set any of the others, proceed to "Resettng Selected Modes" below.

The list of parameters that are changed when you select { YES } is provided below.

  • The SYS mode is reset.
  • The number base is set to decimal.
  • The display format is set to standard notation with floating decimal.
  • The angle units are set to degrees.
  • The Halt-On-Error Flag (flag 15) is reset.
  • User memory (other than files) is partitioned to half data registers and half program memory.

Reseting Selected Modes

If you select { NO } in response to the SET NORMAL MODE? prompt, the status may be displayed in one of two ways.

If all parameters are at their normal settings, the following display is shown:

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If any parameters are not at their normal settings, the calculator displays a series of prompts for only these parameters that lets you reset them to their normal setting. The list below shows all possible prompts that you might see. Using [ F1 ] or [ F2 ], you can answer { YES } or { NO } to any of the prompts individually.


CLR SYSTEM MODE?
RESET HEX MODE?
RESET OCT MODE?
RESET UNFORMAT?
CLR FIX=
n MODE?
RESET ENG MODE?
RESET GRAD MODE?
RESET RAD MODE?
CLR HALT ON ERR?
RESET PRT DEV#?
RESET PRT WIDTH?
RESET TRACE?
RESET PARTITION?


If you respond to any prompt by selecting { YES }, that parameter is reset to its normal setting.

If you respond to a prompt by selecting { NO }, that parameter remains at the current setting.

Most of these parameters are also affected when you reset the calculator, or turn the calculator off and on. Refer to "System Parameter Settings" in Appendix A for information concerning the effects of these actions on each parameter.


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