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Windows XP Embedded User Manual

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4.2 Access operation to the CF card of the Write filter

 When the Write Filter is enabled

• Read: Direct access to CF card

• Write: Access to the memory

 When the Write Filter is disabled

• Read: Direct access to CF card

• Write: Direct access to CF card

• When the added or changed data is on the memory, the data on the memory precedes.

• The memory leak will be caused, when accessing to the Write Filter enabled CF card.

To solve the memory leak caused by the Write filter, refer to the following below.

)"6 RAM Disk" (Page 1-13)

• Turning OFF the power at the time of writing into CF card leads to data damage. When

using this unit, use it with the Write Filter effective. Prevention of writing into the CF card

is expected to prevent being damaged or prevent the CF card life cycle (Reference: 0°C

- 70°C , Writing/Delete Times: 300,000 times per block) from declining as well.

Application

Write Filter

Enable

CF card

Memory

Write

Read

Application

CF card

Memory

WriteRead

Write Filter

Disable

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