Maps a specific physical address to a pointer in linear memory for the current process' address space. This function is intended to be used to access
device-specific physical memory (for the memory-mapped devices).
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Language
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Description
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C/C++
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void * MapPhysToLinear ( HANDLE hPci, ULONG PhysAddr, ULONG MappedSize );
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Delphi
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function MapPhysToLinear ( hPci: THandle; PhysAddr:Longword; MappedSize: Longword ): Pointer; stdcall;
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VB
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Function MapPhysToLinear ( ByVal hPci As Long, ByVal PhysAddr As Long, ByVal MappedSize As Long) As Long
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Parameters:
hPci - the handle returned by a successful call to OpenRapidPci
PhysAddr - 32-bit physical address of the start of the region to examine
MappedSize - length in bytes of the physical region. The function uses this parameter to verify that the entire range is addressable.
Return Value :
The linear address of the first byte in the specified range of physical addresses.
Comments:
1. Do not forget to unmap this physical memory area by UnmapMemory when your application not need it anymore.
2. No information can be concluded about the linear addresses for physical addresses if they lie outside the range requested.
See also : UnmapMemory
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