Instrument Control Toolbox

MappedMemorySize

Indicate the size of the mapped memory for low-level read and write operations

Description

MappedMemorySize indicates the amount of memory mapped for low-level read and write operations.

Use the memmap function to map the specified amount of memory in the specified address space (A16, A24, or A32) with the specified offset. Use the memunmap function to unmap the memory space.

Characteristics

Usage	VISA-VXI, VISA-GPIB-VXI
Read only	Always
Data type	Double

Values

The default value is 0.

Example

Create the VISA-VXI object vv associated with a VXI chassis with index 0, and an Agilent E1432A digitizer with logical address 130.

• vv = visa('agilent','VXI0::130::INSTR');
  fopen(vv)
  

Map 16 bytes in the A16 address space with no offset, and then return the size of the mapped memory.

• memmap(vv,'A16',0,16)
  vv.MappedMemorySize
  ans =
       16
  

See Also

Functions

memmap, memunmap

Properties

MappedMemoryBase

MappedMemoryBase

MemoryBase