IoCopyOut (FUN)

FUNCTION IoCopyOut

IoCopyOut should be used for copying data of I/O channels.

This function copies a specific number of bits from adress “pbySrc” + “wSrcStartBit” to “pbyDst” + “wDstStartBit”. Depending on the local byte order of the CPU, this function takes also care about swapping.

If possible, the data is copied in bytes. If not, the bits are copied seperately one after another. In the latter case, the bit accesses are done atomically, using SysCpuSetBit[/2].

Note, that this function (similar to memcpy in C) makes no additional checks of input parameters. The caller has to take care about the validity of pointers and sizes, passed to this function.

As the function implements no error handling, the exact count of “wSize” bits is copied to “pbyDst” + “wDstStartBit”.

InOut:

Scope	Name	Type	Comment
Input	pbyDst	POINTER TO BYTE	pointer to destination memory
	wDstStartBit	WORD	start bit in destination memory (>= 0)
	pbySrc	POINTER TO BYTE	pointer to source memory
	wSrcStartBit	WORD	start bit in source memory (>= 0)
	wSize	WORD	number of bits to copy
	wBaseSize	WORD	size of base type of the I/O channel