Tablel : Set of operations FS Operation 0000 F = A 0001 F = A + 1 0010 F = A + B' F = A + B' + 1 F = A + B F= A + B + 1 F= A - 1 F = A 1000 F= A AB (OR) F = A VB (XOR) F = A O B (AND) F = A' F = B F = sr B (rotate right) F = sl B (rotate left) 0011 0100 0101 0110 0111 1001 1010 1011 1100 1101 1110

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show how to design a 8-bit Function Unit Combining Arithmetic Logic Unit (ALU) and a Shifter that can perform the operations given in table 1 below.

  1. Use X and Y as 8 bits input and F as 8 bits output as shown in Figure 1.
  2. S0,S1,S2 and S3 represent the selction code in the operation set table
  3. Three statue bits V (over flow), C (carry), N (negative) and are related to arrithmatic operations and statue bit Z (zero) is relataed to both arrithmatic and logic operation.
  4. Test your designed Function Unit with necessary tables.
Tablel : Set of operations
FS
Operation
0000 F = A
F = A + 1
F= A + B'
F = A + B' + 1
F = A + B
F = A + B +
F = A - 1
F = A
0001
0010
0011
0100
0101
0110
0111
F = A AB (OR)
F = A VB (XOR)
F= A O B (AND)
F = A'
F = B
F = sr B (rotate right)
F= sl B (rotate left)
1000
1001
1010
1011
1100
1101
1110
Transcribed Image Text:Tablel : Set of operations FS Operation 0000 F = A F = A + 1 F= A + B' F = A + B' + 1 F = A + B F = A + B + F = A - 1 F = A 0001 0010 0011 0100 0101 0110 0111 F = A AB (OR) F = A VB (XOR) F= A O B (AND) F = A' F = B F = sr B (rotate right) F= sl B (rotate left) 1000 1001 1010 1011 1100 1101 1110
8.
A
B
s-4
FS
Function Unit
(ALU+Shifter)
F
>UZN
Transcribed Image Text:8. A B s-4 FS Function Unit (ALU+Shifter) F >UZN
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