Specifies the position of the physical memory in a 'row'. For example, if it takes two 8-bit memory devices to form a 16-bit ...

Specifies the position of the physical memory in a 'row'. For example, if it takes two 8-bit memory devices to form a 16-bit row, then a value of '2'means that this memory is the second device. 0 is an invalid value for this property.