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Board Components
Flash Memory Partitions
The configuration controller expects user and factory configuration data
to be stored at fixed locations (offsets) in flash memory. In addition, the
factory-programmed reference design expects Nios II software and data
to exist at certain locations in flash memory. Table 2–20 shows the
expected flash memory partitioning.
Table 2–20. Flash Memory Partitions
Offset
0x00000000 – 0x00BFFFFF
0x00C00000 – 0x00CFFFFF
0x00D00000 –0x00DFFFFFF
0x00E00000 – 0x00EFFFFF
0x00F00000 – 0x00FAFFFF
0x00FB0000 – 0x00FEFFFF
0x00FF0000 – 0x00FFFFFF
Usage
User Application Space (11 MB)
User Configuration (1 MB)
Free Space (1 MB)
Factory Configuration (1 MB)
Web Pages
Web Server Software
Persistent Data
Factory-Programmed Content
Nios II Processor Reference
Design
Web Pages
Web Server Software
Network Settings for Web Server
1
c
This partitioning scheme is merely a convention used by the
configuration controller and the factory-programmed reference
design. Custom FPGA designs can use the flash memory space
in any way necessary.
Altera recommends that you do not overwrite the factory-
programmed flash memory contents. Without a valid factory
configuration, the configuration controller may not be able to
successfully configure the FPGA. If you alter the factory
configuration, you can restore the board to its factory-
programmed state. Refer to Appendix B: Restoring the Factory
Configuration.
User Application Space
The lower 11 MB of flash memory is the user application space. This is
free space for user designs to store code and data for Nios II programs.
The Nios II IDE allows you to compile Nios II programs and program
them into the user application space.
2–38 Reference Manual
Nios Development Board Cyclone II Edition
Altera Corporation
May 2007
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相关PDF资料
DK-NIOS-2S60N NIOS II KIT W/STRATIX II EP2S60N
DK-PCI-2C35N PCI KIT W/CYCLONE II EP2C35N
DK-PCIE-2SGX90N PCIE KIT W/S II GX EP2SGX90N
DK-SI-2SGX90N SI KIT W/SII GX EP2SGX90N
DK-SI-4SGX230N KIT DEV STRATIX IV 4SGX230N/C2
DK-START-3C25N KIT STARTER CYCLONE III EP3C25
DK-START-4CGX15N KIT STARTER CYCLONE IV GX
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DKOH02KOH02ME 105X44 MM 制造商:Fischer Elektronik GmbH & Co KG 功能描述:
DKP120 制造商:APEM 功能描述:
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