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术语 reference bit
释义 reference bit
访问位;[参考数元]
In System/370 reference bit is turned “ON” by hardware whenever the associated page in real storage is referred to (read or stored into). In OS/VS1 and VSE, there is a reference bit in the storage key associated with each 2K storage block. In OS/VS2 and VM/370, there is a reference bit in each of two storage blocks associated with each page frame.
在IBM System/370中,当实存中的页面被访问(读出或写入)时,该页的访问位就由硬件置成“1”。在OS/VS1和VSE系统中,每2K存储块的存储键中 有一个访问位。在OS/VS2和VM/370系统中,与每个页框相关的每两个存储块中有一个访问位。
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