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asm1
- 要求根据寄存器DL中的D3位,完成两个组合BCD数X和Y的加减运算。D3=0,做加法,D3=1,做减法,另外附加了扩张实验-Requirements to complete the combination of the two BCD number of X and Y addition and subtraction in the register DL D3. D3 = 0, addition, D3 = 1, subtraction, in addition to additional e