Assume that we have a 4-bit ALU. List the inputs and outputs in binary for the ALU if we are using it to determine the subtraction of A = 6₁ and B = 7₁ Note that ALU operation is 102. Input: 10 10' a = (dotsdots) b = (dotsdots) Output: Zero = (C) Result _) Overflow = (C)
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- Consider this 1-bit ALU design, as shown in class (note that the rounded rectangles controlled by Ainvert, Binvert, and Operation represent multiplexers): If I want Result to be the result of a - b, then what value do each of these other inputs need to be? Ainvert : 0 or 1 Binvert : 1 or 0 CarryIn: 1 or 0 Operation : 00 , 01, 10, 11 which one ?In this exercise you are to construct an ALU with the following specification: • The ALU takes 3 different 32-bit inputs: A, B, C; and has one 32-bit output: D. • The ALU supports 7 different operations: – A + B (addition) – A - B (subtraction) – MAX(A,B,C) – MIN(A,B,C) – A & B (bitwise AND) – B & C (bitwise AND) – (A + B) & C (addition followed by bitwise AND) To construct this ALU you will follow a modular design. Assume you have an unlimited number of the following gates and combinational circuits at your disposal, but no others: • 2-arity AND gate, • 2-arity OR gate, • NOT gate, • 2-way MUX, • bit-wise AND circuit: it takes two 32-bit inputs and has a 32-bit output which is the bit-wise AND of its inputs. • 32-bit ADDER: it takes two 32-bit inputs, a 1-bit control signal, and has a 32-bit output. If the control signal is 0, the circuit outs the sum of its inputs. If the control signal is 1, the circuit outputs the difference of its inputs. The inputs and outputs are…4. Design a 4-bit ALU with the following specifications: S2 S1 Operation SO 000 A+ B 001 A - B 010 -3 B 011 B-5 100 A and B 101 (A OR B)* * is the complement 101 B* 111 A XNOR B
- A three bit LFSR is shown in figure below. Initially, the value of output Y = Y2Y1YO is set to 110. The value of output Y after three clock cycles is Y, Yo D2 Q2 D, Q Do CLK O a. Y2Y1Y0 = 110 O b. Y2Y1YO = 100 Oc Y2Y1YO = 101 O d. Y2Y1YO = 001Time left 1:39 A three bit LFSR is shown in figure below. Initially, the value of output Y = Y2Y1YO is set to 110. The value of output Y after three clock cycles is Y2 Y, D2 D, Q, Do Qo CLK O a. Y2Y1YO = 110 O b. Y2Y1YO = 101 O c. Y2Y1YO = 100 O d. Y2Y1YO = 001In this problem, we will design a parallel adder for adding three positive binary numbers. These numbers are designated Xp,.X3,X2X1, Yn...Y3,Y2,Y, and Zn,.Z3,Z2,Z1. The following one-bit adder cell is used in this n-bit parallel adder. In this case, there would be two carry out signals, D1 and Do, and two carry in signals, C1 and Co. Two carry signals are required because three binary digits are added with the two carry bits coming into the cell. a) Derive a truth table which specifies the complete operation of this one-bit adder cell b) Derive a Boolean equation for Si in minimum form (Equations for D1 and Do are not required.). c) Draw the adder diagram for adding three positive binary numbers considering each binary number is n-bits. Xi Yi Zi D1 One-Bit Adder Cell DO Si
- 1. Figure depicts a UART serial data transmission from a keyboard to a computer.The character input from the keyboard is “Best”. By refering to the ASCII code table,draw the serial data transmission waveform diagram for the characters and label the bit.Ignore the parity bit.(Note: The transmitted data bits start with LSB and ends with MSB)Calculate the values of the pins A0 and BHE’ and how many bus cycles are required for completing the given MOV operations. Give logical reasoning behind your answers. A) MOV DX, [12345 H] B) MOV AH, [81 H] C) MOV AX, [12340 H] D) MOV BL, [12345 H] E) MOV BX, [69 H] (F) MOV AL, [70 H]Question 2 Select ALL the operand specifiers that correctly produce an effective address of 0x114. Assume that the initial values of secx and tedx are 0x100 and 0x4, respectively. U 0x14(%ecx) 0x5 (%ecx,%edx) 0x114 0x4(%ecx,%edx,4) (%ecx,%edx, 5)
- HOME WORK 3: Design a 4 bit ALU that perform the following operations: selection operation s1 SO Cin= 0 Cin= 1 A + B А-В 1 А- 1 A+ 1 1 ΑΛΒ 1 1 AV BQS: Draw phase change with time for GMSK modulator transmitting the data stream 1110100100011 Assume the data rate is 1 kKbps and maximum phase change per bit is 7/2.Design 4 bit left/right rotation circuit that specifies the number of bits in the rotation by a 2-bit word Ro_n, and the direction of rotation by a single bit R/L such that R/L = 1 denotes a right rotation and R/L = 0 is a left rotation.