| 摘要 |
<p>The present invention provides for a secured data processing device comprising a processing unit, an instruction memory to hold instructions, a plurality of addressable modules in a memory address space and an address monitor, at least one of said instructions comprising at least an operation code, said memory address space being divided into regions, said plurality of addressable modules being connected to a databus, said secured data processing device being characterised in that :
- said operation code comprises information indicating that said instruction is exclusively applicable to at least one of said regions in the memory address space;
- said secured data processing device comprises information defining a range of valid addresses for each of said regions;
- said secured data processing device comprises means to enable access only to the at least one region in the memory address space to which said instruction is exclusively applicable.</p> |
