Advanced Embedded Systems Question: Download Questions PDF
What is JNC?
Answer:
☛ It is a command used to jump if no carry occurs after an arithematic operation.
☛ It is called as jump if no carry( conditional jump instruction).
☛ Here the carry flag bit in PSW register is used to make decision.
☛ The processor looks at the carry flag to see if it is raised or not.
☛ If carry flag is 0 ,CPU fetches instructions from the address of the label.
☛ It is called as jump if no carry( conditional jump instruction).
☛ Here the carry flag bit in PSW register is used to make decision.
☛ The processor looks at the carry flag to see if it is raised or not.
☛ If carry flag is 0 ,CPU fetches instructions from the address of the label.
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