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    • 20. 发明申请
    • FLASH MEMORY ACCESS CIRCUIT
    • 闪存存取电路
    • US20100169546A1
    • 2010-07-01
    • US12377675
    • 2007-08-13
    • Victor Martinus Gerardus Van AchtNicolaas Lambert
    • Victor Martinus Gerardus Van AchtNicolaas Lambert
    • G06F12/00G06F12/02G06F13/28G06F13/24
    • G06F9/4812
    • A system comprises an instruction processor (10), a flash memory device (14a), a flash control circuit (14) and a working memory (16). Instructions of an interrupt program are kept stored in the flash memory device (14a). When the instruction processor (10) receives an interrupt signal, the instruction processor (10) executes loading instructions, to cause the flash control circuit (14) to load said instructions of the interrupt program from the flash memory device (14a) into the working memory (16). The instructions of the interrupt program are subsequently executed with the instruction processor (10) from the working memory (16). Preferably it is tested whether a copy of said instructions of the interrupt program is stored in the working memory (16) at the time of the interrupt. If the copy is found stored, execution of said instructions from the copy is started before completing execution of of access instructions that were in progress at the time of the interrupt. If the copy is not found stored, execution of the access instructions is first completed and subsequently the instruction processor (10) executes the loading instructions, followed by execution of the instructions of the copy of interrupt program from the working memory (16).
    • 系统包括指令处理器(10),闪存设备(14a),闪存控制电路(14)和工作存储器(16)。 中断程序的指令被保存在闪速存储器件(14a)中。 当指令处理器(10)接收到中断信号时,指令处理器(10)执行加载指令,使闪存控制电路(14)将来自闪存设备(14a)的中断程序指令加载到工作 记忆(16)。 随后使用来自工作存储器(16)的指令处理器(10)执行中断程序的指令。 优选地,在中断时测试中断程序的所述指令的副本是否存储在工作存储器(16)中。 如果找到存储的副本,则在中断之前完成正在进行的访问指令的执行之前,开始从副本执行所述指令。 如果没有存储副本,则首先完成访问指令的执行,随后指令处理器(10)执行加载指令,随后从工作存储器(16)执行中断程序副本的指令。