HP 48g Graphing Calculator - Manual (Page 404)

28
To merge memory on the RAM card in Card Slot 1 with yser
memory:
1. Turn off the calculator and make sure the card is not
wnte-protected.
2. Turn the calculator back on and press
LIBRARY) M E R G
. If
the card previously contained any backup objects or libraries, the
MERGEl command automatically moves them to a special part of
memory called port 0. See “Using Port 0” on page 28-2.
To free a RAM card in Card Slot 1 that’s merged into user memory:
1. Press
SKID
[ e n t e r ] to enter an empty list.
2. Press
library ) F R E E
1. If the RAM card is already free (port
memory), you’ll get a Port Not fly-si Table error when you
execute FREEl. If there isn’t enough memory available to free the
RAM card, you’ll get a memory error when you execute FREEl
(see below).
3. Optional: Turn off the HP 48 and unplug the card—see “To remove
a plug-in card” on page 28-14.
To check the amount of available user memory, press
fi^fMEIVIORY)
M E M
—the number returned is the amount of unused user memory
in bytes. To be able to free the RAM card, you must have an unused
amount that’s greater than or equal to the size of the RAM card—
otherwise, the HP 48 doesn’t have enough unused memory to allocate
to the card.
If there’s insufficient user memory to free a RAM card:
B Purge unneeded variables from user memory.
■ Back up data into another RAM card installed in the other card slot
and then purge the original variables.
B Back up data into port 0, purge the originals, and then move the
backup objects to the RAM card as it’s being freed (see below).
28-16 Libraries, Ports and Plug-In Cards