Programme Code : MCA
Course Code : MCS-012
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Year : 2012 Views: 1092 Submitted By : Anand On 19th September, 2012

Do you have solution for this Question. If yes    I aslo want solution.

Q.


Assume a hypothetical machine that has only PC, AC, MAR, IR, DR and Flag registers. (You may assume the roles of these registers same as that are defined in general for a von Neumann machine) The instructions of this machine can take two operands - one the operand of these must be a register operand. It has an instruction:

SUB AC, X; // it performs the operation AC ï AC – Content of location X. Write and explain the sequence of micro-operations that are required to fetch and execute the instruction. Make and state

suitable assumptions, if any


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