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STC89C53RC датащи(PDF) 42 Page - STCmicro Technology Co,.Ltd |
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STC89C53RC датащи(HTML) 42 Page - STCmicro Technology Co,.Ltd |
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42 / 165 page ![]() ADD A,Rn Bytes: 1 Cycles: 1 Encoding: 0 0 1 0 1 r r r Operation: ADD (A)←(A) + (Rn) ←(A) + (Rn) (A) + (Rn) ADD A,direct Bytes: 2 Cycles: 1 Encoding: 0 0 1 0 0 1 0 1 direct address Operation: ADD (A)←(A) + (direct) ←(A) + (direct) (A) + (direct) ADD A,@Ri Bytes: 1 Cycles: 1 Encoding: 0 0 1 0 0 1 1 i Operation: ADD (A)←(A) + ((Ri)) ←(A) + ((Ri)) (A) + ((Ri)) ADD A,#data Bytes: 2 Cycles: 1 Encoding: 0 0 1 0 0 1 0 0 immediate data Operation: ADD (A)←(A) + #data ←(A) + #data (A) + #data ADDC A,<src-byte> Function: Add with Carry Description: ADDC simultaneously adds the byte variable indicated, the Carry flag and the Accumulator, leaving the result in the Accumulator. The carry and auxiliary-carry flags are set, respectively, if there is a carry-out from bit 7 or bit 3, and cleared otherwise. When adding unsigned integers, the carry flag indicates an overflow occured. OV is set if there is a carry-out of bit 6 but not out of bit 7, or a carry-out of bit 7 but not out of bit 6; otherwise OV is cleared. When adding signed integers, OV indicates a negative number produced as the sum of two positive operands or a positive sum from two negative operands. Four source operand addressing modes are allowed: register, direct, register-indirect, or immediate. 42 |
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