HP 48gII - Manual (Page 775)

Page 26-6
the screen. Alternatively, you can use function EVAL to run a program stored
in a backup object, or function RCL to recover data from a backup object as
follows:
• In algebraic mode:
To evaluate a back up object, enter:
EVAL(argument(s), : Port_Number : Backup_Name )
To recall a backup object to the command line, enter:
RCL(: Port_Number : Backup_Name)
• In RPN mode:
To evaluate a back up object, enter:
Argument(s) ` : Port_Number : Backup_Name EVAL
To recall a backup object to the command line, enter:
: Port_Number : Backup_Name ` RCL
Using libraries
Libraries are user-created binary-language programs that can be loaded into
the calculator and made available for use from within any sub-directory of the
HOME directory. Libraries can be downloaded into the calculator as a
regular variable, and, then, installed and attached to the HOME directory.
Installing and attaching a library
To install a library, list the library contents in the stack (use ‚ variable soft-
menu key, or function RCL) and store it into port 0. For example, to install a
library variable into a port use:
• In algebraic mode: STO(Library_variable, port_number)
• In RPN mode: Library_variable ` port_number K
After installing the library contents in port memory you need to attach the
library to the HOME directory. This can be accomplished by rebooting the
calculator (turning the calculator off and back on), or by pressing,
simultaneously,
$C. At this point the library should be available for use.
To see the library activation menu use the LIB menu ( ‚á). The library
name will be listed in this menu.