ADLINK Technology PCI-7200 User Manual

Also see for cPCI-7200: User guide User guide

ADLINK Technology PCI-7200 User Manual Manual pdf 56 page image

C/C++ & DLL Libraries •• 475.14 _7200_Alloc_DMA_Mem@ DescriptionContact Windows 95/98 system to allocate a block of contiguousmemory for single-buffered DMA transfer. This function is onlyavailable in Windows 95/98 version.@ SyntaxVisual C++ (Windows 95/98)int W_7200_Alloc_DMA_Mem (U32 *buff, U32 *handle, U32buf_size, U32 *actual_size)Visual Basic (Windows 95/98)W_7200_Alloc_DMA_Mem (buff As Long, handle As Long, ByValbuf_size As Long, actual_size As Long ) As Long@ Argumentbuff : The start address of the user buffer for DMA datatransfer. This buffer will be attached to the DMAmemory allocated by this function. When using thisDMA memory handle as an argument ofW_7200_DI_DMA_Start function, DI data will becopied to this buffer. When using this DMA memoryhandle as an argument of W_7200_DO_DMA_Startfunction, the data stored in this buffer will be the DOdata.handle: The handle of system DMA memory returned fromsystem. Use this handle in _7200_DI_DMA_Start or_7200_DO_DMA_Start.buf_size: Bytes to allocate. Please be careful, the unit of thisparameter is BYTE, not SAMPLE.