发明授权
US07107407B2 Arithmetic unit with reduced startup time and method of loading data
有权
减少启动时间的算术单元和加载数据的方法
- 专利标题： Arithmetic unit with reduced startup time and method of loading data
- 专利标题（中）： 减少启动时间的算术单元和加载数据的方法
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申请号： US10680128申请日： 2003-10-08
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公开(公告)号： US07107407B2公开(公告)日： 2006-09-12
- 发明人: Shinsuke Kato , Kiyoshi Owada
- 申请人： Shinsuke Kato , Kiyoshi Owada
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2002-296229 20021009
- 主分类号： G06F12/08
- IPC分类号： G06F12/08
摘要：
An arithmetic unit includes a switching device 16 and a cache controller 19. The switching device 16 determines whether desired data to be read by the CPU 11 is in a RAM 14, and allows, depending on a result of the determination, the CPU 11 to directly read the desired data from a ROM 13. The cache controller 19 controls a cache 12 so that the RAM 14 is initialized based on cache data corresponding to the desired data stored in the cache 12. In an arithmetic unit having a CPU, a cache, RAM, and ROM configured in the above manner, the time required for a startup process is reduced.