IRegister64::In64Ex

Note: Keysight's VISA COM does not support a COM server for VXI. The IVxi-related interfaces are listed in this help file because they are included in the global VISA COM library.

Description

Reads in a 64-bit value from the specified memory space (assigned memory base + offset). This function takes the 64-bit value from the address space pointed to by space. The offset must be a valid memory address in the space.

Note: This method uses 64-bit integers. It can be used in Visual Basic.NET (VB.NET), but not in Visual Basic 6 (VB6) or earlier versions of Visual Basic.

If the session object is an INSTR session, the offset parameter specifies a relative offset from the start of the instrument's address space. If the session object is a MEMACC session, the offset parameter is an absolute offset from the start of memory in that VXI address space.

VB Prototype

value As Long = In64Ex( space As Short, offset As Long )

C++ Prototype

HRESULT In64Ex( short space, int64 offset, int64* pVal8 );

Parameters

space

Specifies the address space.

The following values are legal:

VXI_A16_SPACE	Address the A16 address space of VXI/MXI bus.
VXI_A24_SPACE	Address the A24 address space of VXI/MXI bus.
VXI_A32_SPACE	Address the A32 address space of VXI/MXI bus.

offset

Offset (in bytes) of the address or register from which to read.

pVal8

Data read from bus

Return Value

Refer to the table of return codes.