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    • 5. 发明授权
    • Address translation circuit for a CPU
    • CPU的地址转换电路
    • US08145875B2
    • 2012-03-27
    • US12393124
    • 2009-02-26
    • Hitoshi Kai
    • Hitoshi Kai
    • G06F12/00
    • G06F12/0223G06F12/0888G06F12/10
    • An address translation circuit includes an area address holding section, an invert flag holding section, a match detection section, and a bit conversion section. The area address holding section holds at least part of a translation target address as an area address. The invert flag holding section holds an invert flag specifying whether or not part of said translation target address is to be inverted. The match detection section detects a match between a predetermined part of at least one bit in an input address on the one hand, and said area address held by said area address holding section on the other hand. If a match is detected by said match detection section and if said invert flag held by said invert flag holding section specifies that part of said translation target address is to be inverted, the bit inversion section inverts a predetermined bit part in said input address before outputting the bit-inverted address.
    • 地址转换电路包括区域地址保持部分,反转标志保持部分,匹配检测部分和位转换部分。 区域地址保持部分保存翻译目标地址的至少一部分作为区域地址。 反转标志保持部分保持反转标志,指定所述转换目标地址的一部分是否被反转。 匹配检测部分检测一方面的输入地址中的至少一位的预定部分与由所述区域地址保持部分保持的所述区域地址之间的匹配。 如果所述匹配检测部分检测到匹配,并且如果由所述反相标志保持部分保持的所述反相标志指定所述转换目标地址的那部分将被反转,则位转换部分在输出之前将所述输入地址中的预定位部分反相 位反转地址。