InterviewSolution
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InterviewSolution
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Write The Fetch Cycle And Execute Cycle For Following Instructions:jmpnz (jump To The Given Address If The Accumulator Not Equal To Zero) Ret(return From A Subroutine) Adb (add The Contents Of Register B To The Accumulator And Save Result In The Accumulator)? |
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Answer» As this is mainframe assembler section, this is a trick QUESTION - there is no JMPNZ opcode for mainframe (recently added JNZ with relative addressing in the z/800 and later,but no JMPNZ) and the mainframe has no RET instruction (there is a PR to RETURN from a CROSS address SPACE or PC "call" STATEMENT) and the mainframe has no accumulator, ADB opcode, or B register. As this is mainframe assembler section, this is a trick question - there is no JMPNZ opcode for mainframe (recently added JNZ with relative addressing in the z/800 and later,but no JMPNZ) and the mainframe has no RET instruction (there is a PR to return from a cross address space or PC "call" statement) and the mainframe has no accumulator, ADB opcode, or B register. |
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