Method, device and intelligent card for accessing data
A technology for accessing data and data, which is applied in the field of smart cards, can solve problems such as no MMU, low versatility, and narrow promotion range, and achieve the effects of reducing the difficulty of data access, expanding memory space, and improving versatility
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[0025] Aiming at the above-mentioned technical problems existing in the prior art, the embodiment of the present invention provides a method, device and smart card for accessing data, so as to implement data access to the virtual memory space of the smart card without MMU, reducing the need for virtual memory space of the smart card. Difficulty for data access, and it can be used for smart cards that do not have MMU functions, thereby improving versatility. The method for accessing data includes: receiving a data access instruction, and determining the instruction type and the target address to be accessed according to the data access instruction; after determining that the target address is a virtual address and the virtual address is within the set virtual address range When it is inside, determine the offset of the target address in the page index of the non-volatile memory; perform a corresponding data access operation in the storage space corresponding to the offset, and t...
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