User`s guide

Programming via GPIB and VXI 4
Agilent VISA User’s Guide 125
VXI and GPIB-VXI Specific MEMACC Attributes
The following attributes, most of which are read/write,
provide memory window control information.
Table 28 Attributes That Provide Memory Window Control Information
Attribute Description
VI_ATTR_VXI_LA Logical address of the local controller.
VI_ATTR_SRC_INCREMENT Used in viMoveInxx operation to specify
how much the source offset is to be
incremented after every transfer. The default
value is 1 and the viMoveInxx operation
moves from consecutive elements.
If this attribute is set to 0, the viMoveInxx
operation will always read from the same
element, essentially treating the source as a
FIFO register.
VI_ATTR_DEST_INCREMENT Used in viMoveOutxx operation to specify
how much the destination offset is to be
incremented after every transfer. The default
value is 1 and the viMoveOutxx operation
moves into consecutive elements.
If this attribute is set to 0, the viMoveOutxx
operation will always write to the same
element, essentially treating the destination
as a FIFO register.
VI_ATTR_WIN_ACCESS Specifies modes in which the current
window may be addressed: not currently
mapped, through the viPeekxx or viPokexx
operations only, or through operations
and/or by directly de-referencing the address
parameter as a pointer.
VI_ATTR_WIN_BASE_ADDR Base address of the interface bus to which
this window is mapped.
VI_ATTR_WIN_SIZE Size of the region mapped to this window.