Campbell-scientific CR3000 Micrologger Manuel d'utilisateur Page 66

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Section 5. System Overview
66
Note Once a Short Cut generated program has been edited with CRBasic Editor,
it can no longer be modified with Short Cut.
5.1.6 Memory and Final Data Storage
Read More! See Memory and Final Data Storage (p. 335).
CR3000 memory is organized as follows. Memory size is posted in the Status
table (see the appendix Status Table and Settings
(p. 529) ).
OS Flash
o 2 MB
o Operating system (OS)
o Serial number and board rev
o Boot code
o Erased when loading new OS (boot code only erased if changed)
Serial Flash
o 512 kB
o Device settings
o Write protected
o Non-volatile
o CPU: drive residence
Automatically allocated
FAT file system
Limited write cycles (100,000)
Slow (serial accesses)
Main Memory
o 4-MB SRAM
o Battery backed
o OS variables
o CRBasic compiled program binary structure (490 kB maximum)
o CRBasic variables
o Final Storage
o Communications memory
o USR: drive
User allocated
FAT32 RAM drive
Photographic images (See the appendix Cameras
(p. 564) )
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