Show the hypothetical instruction format of 32 bits, Computer Engineering

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Q. Show the Hypothetical Instruction Format of 32 bits?

A sample instruction format is shown in figure below.

107_Show the Hypothetical Instruction Format of 32 bits.png

Figure: A Hypothetical Instruction Format of 32 bits

Please note the subsequent points in Figure below:

  • Opcode size is 5 bits. So in general it will have 25 = 32 operations.
  • There is just one operand address machine.
  • There are two bits for addressing modes. Hence there are 22 = 4 different addressing modes possible for this machine.
  • The last field (8 - 31 bits = 24 bits) here is operand or the address of operand field.

In case of immediate operand, maximum size of the unsigned operand will be 224.

In case it's an address of operand in memory then maximum physical memory size supported by this machine is 224 = 16 MB.


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