Dolphin® 7850 Series User’s Guide–
Preliminary
6 - 9
Memory
Dolphin terminals have two types of memory: volatile and non-volatile. Data stored in volatile memory does not persist through
cold boots (see
) whereas data stored in non-volatile memory does persist through cold
boots. Each type of memory has its own options.
Volatile
Data stored in volatile memory does not persist through cold boots. The Dolphin 7850 terminal has 64MB of volatile memory by
default. Volatile memory is used for running and storing programs as well as storing program data and is also known as RAM
memory.
Non-Volatile
Data stored in non-volatile Flash memory does persist through cold boots. The Dolphin 7850 terminal can have 64MB or 128MB
of non-volatile memory.
IPSM
Short for Internal Persistent Storage Manager, IPSM is the on-board Flash memory. Because this
memory is non-volatile, data and programs stored in IPSM are not affected when power is removed
or a cold boot launched. For this reason, default programs and files for Dolphin terminals such as
Autoinstall are stored in IPSM.
Secure Digital (SD) Card
Hand Held Products offers 64MB, 128MB, and 256MB SD cards that can be installed at the factory.
The SD memory interface is not user-accessible or field-replaceable.
Use the Memory system setting to check memory usage after you receive warning messages about memory. There are three
tabs: Main, Storage Card, and Running Programs.
Main Tab
This tab displays current capacity and usage of the 64MB or 128MB of on-board, volatile memory.
Field Description
Columns
Storage:
The part of RAM memory used for storing programs and program data.
Program:
The part of RAM memory used to run programs.
Total
Displays the current MB of memory allocated for Storage and Program use.
In use
Displays the total MB of that allocated memory being used in Storage and Program
memory functions.
Free
Displays the total MB of memory available for Storage and Programs use.
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