发明授权
- 专利标题： Method of loading initial program in processor system
- 专利标题（中）： 在处理器系统中加载初始程序的方法
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申请号： US09770308申请日： 2001-01-29
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公开(公告)号： US06839835B2公开(公告)日： 2005-01-04
- 发明人: Takahisa Kawade , Masayoshi Sekine , Gaku Watanabe , Keihiro Kurakata
- 申请人： Takahisa Kawade , Masayoshi Sekine , Gaku Watanabe , Keihiro Kurakata
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2000-025140 20000202
- 主分类号： G06F9/24
- IPC分类号： G06F9/24 ; G06F9/445 ; G06F3/00
摘要：
In a processor system having a CPU, a RAM, and a communication portion for external communication, the operation of the central processing unit is stopped when an IPL operation mode is selected by an operation mode selection switch. An IPL program transferred from the outside through the communication portion is then written to the RAM starting from a predetermined address, and the stoppage of the operation of the CPU is thereafter canceled. The CPU restarting the operation executes the IPL program written to the RAM by first reading the predetermined address to download a system program. Since the IPL program is transferred from the outside, the IPL program to be used can be easily changed.
公开/授权文献
- US20010020269A1 Method of loading initial program in processor system 公开/授权日：2001-09-06
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