base address 基址:
the part of a two-part memory address that remains constant and provides a reference point from which the location of a byte of data can be calculated. a base address is accompanied by an offset value that is added to the base to determine the exact location(the absolute address)of the information. the concept is similar to a street address system . for example, "2010 main street " plus an offset(10from the beginning of the block ).base address are known as segment address in IBM pcs and compatibles; data in these computers is identified by its position as a relative offset the start of the segment.
保持恆定的兩部分內存地址的一部分並提供一個基准點,從這裡可以計算一個字節數據的位置。基址伴隨著一個加到基上的偏移值來確定信息准確的位置(絕對地址)。這一概念與街道地址系統雷同。例如:“大街2010號由基(大街2000街段)加上偏移值(從街段開始的10號)。在IBMPC和兼容機中的數據按其相對於由段開始的相對偏移位置被識別。