## Virtual Device Driver Reference for OS/2

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### Byte-Granular Memory Management Services

VDHAllocBlock Allocate block from memory block pool
VDHAllocDOSMem Allocate block of memory from DOS area
VDHAllocMem Allocate small amount of memory
VDHCopyMem Copy from one linear memory address to another
VDHCreateBlockPool Create memory block pool
VDHDestroyBlockPool Destroy memory block pool
VDHExchangeMem Exchange contents of two linear memory regions
VDHFreeBlock Free block of memory
VDHFreeMem Free memory