Bitfield Clear Instructions in ARM

Bitfield Clear Instructions

Memory holds data and code. The above figure shows a block diagram of memory. The address of memory defines the location of the data, where each location of ARM processor memory holds one byte. In assembly language, a label is shown below figure. represents the address of memory. It shows how each memory location holds one byte. Storing two bytes (half a word) of data, such as 0x4563, can be stored in two different ways called Big Endian and Little Endian.

Big Endian: In Big Endian, the most significant byte (MSB) of data is stored first in memory. The ARM 7 operates in Big and Little Endian; each memory location of ARM7 holds one byte and a word (4 bytes) can be stored in memory in two different ways: Big Endian and Little Endian. Big Endian. In Big Endian, the most significant byte of a word is stored at the lowest address.