Specifications

23
2.1.7 Memory Management
The high speed and large capacity RAM (MobileDDR 128MB) and FlashDisk (NAND Flash
128MB) are integrated in the terminal.
Although RAM has been used for RAM XIP (for OS), program memory (for program files) and
object store (for work area) in the past, it is unified presently to integrate FlashDisk on root folder.
Program Memory Object Store
Execute OS files deployed on RAM OS work Execute Program Work Area
128MB RAM
RAM XIP
User Disk
Initialization NAND Disk
OS files for deployment on RAM
128MB OneNAND
Before
Boot loader
OS Disk
Program Mmemory
Execute OS files deployed on RAM OS Work Execute Program
128MB RAM
RAM XIP
User Disk
Initialization NAND Disk
OS files for deployment on RAM
128MB OneNAND
From now on
Boot loader
OS Disk
Program Memory Object Store
Execute OS files deployed on RAM OS work Execute Program Work Area
128MB RAM
RAM XIP
User Disk
Initialization NAND Disk
OS files for deployment on RAM
128MB OneNAND
Before
Boot loader
OS Disk
Program Mmemory
Execute OS files deployed on RAM OS Work Execute Program
128MB RAM
RAM XIP
User Disk
Initialization NAND Disk
OS files for deployment on RAM
128MB OneNAND
From now on
Boot loader
OS Disk
RAM XIP
Execute OS Binary deployed on RAM
IMGFS
OS Files
Boot loader
Initialization
Program Memory
Execute ProgramOS Work
User Disk
NAND DISK
128MB RAM
128MB FlashROM
OS Binary
Updater
Kernel
ULDR
RAM XIP
Execute OS Binary deployed on RAM
IMGFS
OS Files
Boot loader
Initialization
Program Memory
Execute ProgramOS Work
User Disk
NAND DISK
128MB RAM
128MB FlashROM
OS Binary
Updater
Kernel
ULDR
DT-X30 Windows Mobile series
Figure 2.3
Notes:
• Patch files, program files and data are not lost even if the battery pack runs down. Thanks to
this, it is no longer needed to back up object store in the RAM.
• Although object store (RAM) is initialized by a full reset in the past, the functions to clear OS
and reload it are supplied.
• If user disk is formatted, registry, program files and data are initialized to the factory defaults
respectively prior to shipment.
• Although the folder named FlashDisk keeps the compatibility, it is not possible to format this
folder.
Windows CE models
Windows Mobile models