ADLINK PCM-9112+ - Manual (Page 81)

C/C++ Library • 73
5.29 _9112_Alloc_DMA_Mem
@ Description
Contacts Windows 95 system to allocate a block of contiguous memory
for DMA transfer. This function is only available in Windows 95 version.
@ Syntax
Visual C++(Windows-95)
int W_9112_Alloc_DMA_Mem (unsigned long buf_size, HANDLE
*memID, unsigned long *linearAddr)
Visual Basic (Windows-95)
W_9112_Alloc_DMA_Mem (ByVal buf_size As Long, memID As
Long, linearAddr As Long) As Long
@ Argument:
buf_size: Bytes to allocate. Please be careful, the
unit of this @ Argument is BYTE, not SAMPLE.
memID: If the memory allocation is successful, driver
returns the ID of that memory in this @ Argument.
Use this memory ID in W_9112_AD_DMA_Start or
W_9112_ContDmaStart function call.
linearAddr: The linear address of the allocated DMA
memory. You can use this linear address as a
pointer in C/C++ to access the DMA data.
@ Return Code:
ERR_NoError
ERR_AllocDMAMemFailed