The function of this instruction is to divide the 8-bit unsigned integer in accumulator A by the 8-bit unsigned integer in register B. The quotient is stored in accumulator A, and the remainder is stored in register B. The division operation always makes OV and the carry flag CY equal to 0. If OV=1, indicating that the content in register B is 00H, then the execution result is an indeterminate value, indicating that the division has overflowed.
DIV AB; (A) ÷ (B) → (A) and (B) The content in accumulator A is divided by the content in register B. The quotient is stored in accumulator A, and the remainder is stored in register B.
For example: 13/5, the quotient is 2 and the remainder is 3. After the division, the quotient is placed in A and the remainder is placed in B, and CU and OV are both 0. If the value in B is 00H before the division, that is, the divisor is 0, then OV=1.
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