MD4331-Dxx M-Systems, MD4331-Dxx Datasheet - Page 75

• Manufacturer Part Number: MD4331-Dxx
• Description: Mobile DiskOnChip G3 512Mbit/1Gbit Flash Disk
• Manufacturer: M-Systems

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10.7 Boot Replacement
A typical RISC architecture uses a boot ROM for system initialization. The boot ROM is also
required to access Mobile DiskOnChip G3 during the boot sequence in order to load OS images and
the device drivers.
M-Systems’ Boot Software Development Kit (BDK) and DOS utilities enable full control of Mobile
DiskOnChip G3 during the boot sequence. For a complete description of these products, refer to the
DiskOnChip Boot Software Development Kit (BDK) developer guide and the DiskOnChip Software
Utilities user manual. These tools enable the following operations:
•
•
•
Figure 25 illustrates the system boot flow using Mobile DiskOnChip G3 in a RISC architecture.
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Formatting Mobile DiskOnChip G3
Creating multiple partitions for different storage needs (OS images files, register entry files,
back-up partitions, and FAT/NFTL partition)
Loading the OS image file
Boot Loader
RAM
Basic System Initialization
Boot Loader Copies
OS Image to R AM
OS Start-Up Code
Power-Up
Figure 25: System Boot Flow with Mobile DiskOnChip G3
OS Image
Data Sheet, Rev. 1.0
Copy Image
to RAM
DiskOnChip G 3
Take Image from
Mobile DiskOnChip G3
(OS Image Storage)
Flash Disk Partition
BInary Partition
(File Storage)
Mobile DiskOnChip G3
91-SR-011-05-8L