4. Suppose re ex8000, and the memory layout is as follows: Address Data x007 0x79 0x8006 OxCD 0x8005 xA3 0x8004 0xFD 0x8003 8xOD 0x8002 0x8001 0x2C 0x8000 OxEB a) What is the value of r1 after running LDR r1, [r0] if the system is little endian or big endian? b) Suppose the system is set as little endian. What are the values of r1 and rO if the instructions are executed separately? LDR r1, [r0, #4]