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    • 1. 发明授权
    • Semiconductor memory device performing last in-first out operation and
the method for controlling the same
    • 执行最先进先出操作的半导体存储器件及其控制方法
    • US5206834A
    • 1993-04-27
    • US850203
    • 1992-03-12
    • Takenori OkitakaYasunori Maeda
    • Takenori OkitakaYasunori Maeda
    • G06F7/78
    • G06F7/785
    • A LIFO device includes a plurality of memory circuits (1), a write address pointer (2) and a read-out address pointer (3). The write address pointer (2) selects the memory circuit (1) in which data are to be written, while the read-out address pointer (3) selects the memory circuit (1) from which data are to be read out. Each of the write address pointer (2) and the read-out address pointer (3) alternately and repeatedly performs the count-up operation for selecting the memory circuits in a predetermined sequence and the count-down operation of selecting the memory circuits in a sequence which is the reverse of the predetermined sequence. Control is also so made that the selection by the read-out address pointer (3) precedes the selection by the write address pointer (2).
    • LIFO装置包括多个存储器电路(1),写入地址指针(2)和读出地址指针(3)。 写地址指针(2)选择要写入数据的存储器电路(1),而读出地址指针(3)选择要读出数据的存储电路(1)。 写地址指针(2)和读出地址指针(3)中的每一个交替重复执行用于按预定顺序选择存储电路的计数操作,以及选择存储电路的递减计数操作 序列与预定序列相反。 控制也使得读出地址指针(3)的选择在写地址指针(2)的选择之前。