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Question
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).
 Question Submitted By :: Abdlwhap
I also faced this Question!!     Rank Answer Posted By  
 
  Re: 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).
Answer
# 1
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.
 
Is This Answer Correct ?    2 Yes 0 No
Steve Holton
 

 
 
 
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