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Microprocessors & Microcontrollers8086 Registers

Which 8086 register is commonly used as a loop counter by instructions such as LOOP?

  • AAX
  • BBX
  • CCX
  • DDX
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Correct Answer: C. CX
Explanation: The LOOP instruction decrements CX and branches while CX is nonzero.
Reference: Standard microprocessors and microcontrollers: 8086 registers
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