! Instruction !! Opcode !! NOPs !! Cycles !! S !! Z !! 5 !! H !! 3 !! P !! N !! C !! Effect !! Description
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| inc dd || 00qq0011 00dd0011 || 2 || 6 (6) || - || - || - || - || - || - || - || - || dd += 1 ||rowspan=2|Increment
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| inc ixy || 11i11101 00100011 || 3 || 10 (4,6) || - || - || - || - || - || - || - || - || ixy += 1
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| dec dd || 00qq1011 00dd1011 || 2 || 6 (6) || - || - || - || - || - || - || - || - || dd -= 1 ||rowspan=2|Decrement
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| dec ixy || 11i11101 00101011 || 3 || 10 (4,6) || - || - || - || - || - || - || - || - || ixy -= 1
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| add hl,dd || 00qq1001 00dd1001 || 3 || 11 (4,4,3) || - || - || + || + || + || - || 0 || + || hl += dd ||rowspan=2|Add
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| add ixy,dd || 11i11101 00qq1001 00dd1001 || 4 || 15 (4,4,4,3) || - || - || + || + || + || - || 0 || + || ixy += dd
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| adc hl,dd || 11101101 01qq1010 01dd1010 || 4 || 15 (4,4,4,3) || + || + || + || + || + || V || 0 || + || hl += dd + cf ||Add with Carry
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| sbc hl,dd || 11101101 01qq0010 01dd0010 || 4 || 15 (4,4,4,3) || + || + || + || + || + || V || 1 || + || hl -= dd + cf ||Subtract with Carry
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