Answer to Question #263253 in Electrical Engineering for Yash

Question

Explain the instruction format in detail as per the no of address in the instruction with examples?

Answer 1

A computer does a task depending on the instructions given to it. Computer instruction is divided into groupings known as fields. These fields include various information since everything in computers is in 0 and 1, therefore each field has a distinct importance based on which a CPU determines what to do. The following are the most typical fields: The operation field indicates the operation that will be done, such as addition. Address field containing the operand's location, i.e., register or memory location. The mode field defines how the operand will be discovered. The length of an instruction varies according to the number of addresses it includes. In general, CPU organization is classified into three forms based on the number of processors.

Organization of a Single Accumulator

Organization of general registers

Stack arrangement

The operation is carried out in the first organization using a specific register known as the accumulator. In the second case, many registers are employed for calculation. The third organization operates on a stack basis, hence it lacks an address field. A single organization is not required; rather, a combination of multiple organizations is most commonly seen.

A single organization is not required; rather, a combination of multiple organizations is most commonly seen.

Instructions are categorised based on the number of addresses:

To demonstrate the process, we will use the phrase X = (A+B)*(C+D).