2.7

ARM instruction sheets Solve for the correct CPU computations and actions. Execute these ARM instructions as if you were the ARM CPU. Write the final updated values for each memory, register and flags after the given instruction executes in the space provided. Only update the changed values. There are multiple parts of this problem. Endianness: Check for endianness in case of loads and stores, in each part of the question. If the question does not specify the endianness, you can assume little-endian. Note: Only write the changed values, if the value did not change leave the updated cell blank. Note: If the instruction causes no change in the data, clearly state why there is no change, otherwise it will be assumed you did not answer the question. For branch instructions, clearly state if the branch is taken or not taken. Q2.7 STMEA R4!, (RO-R2) ; little-endian Updated Data Memory Orig. Address Data 0x84F0 Ox82 Ox8451 Ox32 Ox8452 OxBC Ox8453 OxA4 Ox84F4 OxF4 Ox8475 0x6A Ox8456 Ox9D Ox8457 OxC2 Ox84F8 Ox42 Ox8459 Ox67 Ox84FA Ox8D Ox 84FB OxA1 Ox84FC OxF2 Ox84FD OxB8 Ox84FE Ox5E Ox84FF OXEE Ox8500 OXFA Ox8501 OxF3 Ox 8502 Ox54 Ox8503 OxBA Ox8504 Ox6D Ox8505 Ox9C Ox8506 Ox78 Ox8507 OxBB Ox8508 OxC3 Ox8509 OxB4 Ox850A OxAA Ox850B OxD9 Ox 850C OxDA Ox850D OxFF Ox8505 OxE5 Ox850F Ox33 Orig. Updated Register Data Data RO OxDC002B45 RI 0x00008500 R2 OxAB038730 R3 Ox2B78DFEO R4 Ox000084F0 R5 Ox00100000 R6 0x041BOCOD R7 Ox00100000 R8 Ox00000000 R9 Ox00842 ABO RIO OxOABD9830 Ril Ox0000000A R12 0x00000002 R13 Ox00008500 R14 Ox003762DD R15 Ox00100000 Flags N 0 ZNOO 1 1 0 0 N/A