Differentiate MRI and Non-MRI instructions
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MRI stands for memory reference instruction. For example
. ADD OPR
MRI involves two or three figures parted by spaces. The first symbols must be a three letter representation illustrating an MRI procedure code, the second is representative address and the third representation, which may or may not be immediate, is the letter I. If I is refraining, it indicates direct address guidance. If I is present, it denotes indirect address instruction.
Non-MRI instruction refers to a register reference or input-output instruction. For example CLA
A non-MRI is interpreted as an instruction that does not have a business division. It constitutes of only the operation code.
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