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OEMGetExtensionDRAM (Windows Embedded CE 6.0)

  • Статья

1/5/2010

This function gets information about extension dynamic RAM (DRAM), if present on the device.

Syntax

BOOL OEMGetExtensionDRAM( 
  LPDWORD lpMemStart, 
  LPDWORD lpMemLen 
);

Parameters

  • lpMemStart
    [out] Page-aligned starting cached address of the extension DRAM, if present.
  • lpMemLen
    [out] Length of the extension DRAM, if present. The length is a multiple of the size of a memory page.

Return Value

This function returns TRUE if extension DRAM is present; otherwise, this function returns FALSE.

Remarks

The kernel calls this function after OEMInit to determine if additional memory is present. Memory can be noncontiguous from the RAM section defined in the Config.bib file.

OEMGetExtensionDRAM limits the OS to two noncontiguous regions of RAM.

If the function pointer pNKEnumExtensionDRAM is set, OEMGetExtensionDRAM is not called.

This function always returns cached addresses. If an un-cached address is returned the device may fail to boot, or it may run more slowly.

Requirements

Header nkintr.h
Library OEMMain.lib or OEMMain_StaticKITL.lib
Windows Embedded CE Windows CE 2.10 and later

See Also

Reference

Required OAL Functions
pNKEnumExtensionDRAM
MainMemoryEndAddress
OEMInit
OEMEnumExtensionDRAM