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1-50 RPL Programming

To specify a particular page of a menu, enter the number as m.pp, where m is the menu number and pp is the

page number (such as 94.02 for page 2 of the TIME menu). If page pp doesn't exist, page 1 is displayed (94

gives page 1 of the TIME menu).

Example: Enter cX M<=5 to get page 1 of the MODES MISC menu.

Enter cXd8H!M<=5 to get page 2 of the MODES MISC menu.

To restore the previous menu:

! Execute 0 MENU.

To recall the menu number for the current menu:

! Execute the RCLMENU command (MODES MENU menu).

Using Menus for Input

To display a menu for input in a program:

1. Set up the menu — see the previous section.

2. Enter a command sequence that halts execution (such as DISP, PROMPT, or HALT).

The program remains halted until it's resumed by a CONT command, such as by pressing !æ. If you

create a custom menu for input, you can include a CONT command to automatically resume the program when

you press the menu key.

Example: The following program activates page 1 of the MODES ANGL menu and prompts you to set the

angle mode. After you press the menu key, you have to press !æto resume execution.

! "!cQ!M<=5!ID)u)&p!BGmu)!Mk()I!2KLM2:!1!

Example: The PIE program on page 2-34 assigns the CONT command to one key in a temporary menu.

Example: The MNX program on page 2-17 sets up a temporary menu that includes a program containing

CONT to resume execution automatically.

Using Menus to Run Programs

You can use a custom menu to run other programs. That menu can serve as the main interface for an application

(a collection of programs).

To create a menu-based application:

1. Create a custom menu list for the application that specifies programs as menu objects.

2. Optional: Create a main program that sets up the application menu — either as the CST menu or as a

temporary menu.

Example: The following program, WGT, calculates the mass of an object in either English or SI units given

the weight. WGT displays a temporary custom menu, from which you run the appropriate program. Each

program prompts you to enter the weight in the desired unit system, then calculates the mass. The menu remains

active until you select a new menu, so you can do as many calculations as you want. Enter the following list and

store it in LST:

f I<=>EI " I<=:<K Yp tG 2L5=4DI 2KLM2: VHdH , 1h!

f ID6I " I<=:<K Yp tG =<Y:L=DI 2KLM2: XRd3 , 1h!

OLST ‰

Weight	220 g
Dimensions (WxDxH)	184 x 87 x 23.5 mm

HP 48GII User Manual

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