use: Microchip Studio and ATmega328p Activity 3: COM instruction flags Write and assemble the following program. COM instruction can trigger Z(Zero), C(Carry), N(Negative), and V(Overflow) flags. Use the simulator to single-step and examine the flags and register content after the execution of each flag triggering instruction. R20,0 R21, 0xFF R22, 0x11 LDI R23, 0x22 LDI LDI LDI COM R20 COM R21 COM R22 COM R23 End: RJMP End → R20= → R21 = → R22= = ➜ R23= [Hex], Active Flags: [Hex], Active Flags: [Hex], Active Flags: [Hex], Active Flags:

//Special operations   Show assembly instruction(s) that will preserve the significand of a number in xmm15, but will flip all the bits in the sign and stored exponent.       2. Show assembly instruction(s) that will fast zero out xmm12.

True/False The opcode field of the instruction affects the value of the control signals used to control the dataflow.

Data operation stage is happening after the operand address calculation in the instruction cycle. Select one: O True O False

construct the program for our imaginary computer!   There must be made of at least 5 instructions   There should be at least 3 different types of instructions (write, move, decrement, add, or)

Part 2: Status Flags There are more registers inside of the CPU that we don't have direct access to. One of these is the EFLAGS register. This register holds the values of the flags used in the CPU's operation. Flags are just single bit values that represent the state of the processor - usually 1 means a setting is on or true, and 0 means it is off or false.  If a flag has the value 1, we say the flag is set. If it has the value 0, we say it is clear. "Setting" a flag means setting it's value to 1, and "clearing" a flag means setting its value to 0.  The status flags are flags that show the outcomes of certain operations. These can be used to check the state of the computations and react accordingly. For example, the carry flag is set if the result of an unsigned addition is too large to fit into the same space as the numbers used during the addition. Look at the following addition operation: 11111111 + 00000001 = 100000000 Note that the result of the addition is 9 bits long, even…

Describe the role of flags in ALU instructions, including the zero flag, carry flag, and overflow flag.

The CMP instruction is used to compare 2 operands. You can use a jump instruction afterwards. True or False

RTI instruction used at the end of a subroutine returns control to the calling program. Group of answer choices True False

The following instruction is executed. Assume that before execution, register R15 contains 0x18, and the flags are ZF=0, SF=1, and CF=1. Ox indicates hexadecimal; do not include a 0x with your answer. Instruction: CMP R15, 0x21 After execution, register R15 contains (in Hex) and the flags will be ZF= SF= and CF=