OV = overflow, NV = no overflow DN = down, UP = up EI = enable interrupt, DI = disable interrupt NG = negative, PL = plus ZR = zero, NZ = not zero AC = auxiliary carry, NA = no auxiliary carry PE = parity even, PO = parity odd CY = carry, NC = no carry 大多都是按一般习惯，只有PL比较特殊，本来正数是positive，但PO已经被奇偶效验为奇(parity odd)用了，所以改说plus。
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答：QBasic简单一点详情>>
