Advanced Embedded Systems Interview Question:

What is JNC?

Submitted by: Muhammad

☛ 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.
Submitted by: Muhammad