| 摘要 |
<p>An unpredictable microprocessor or microcomputer comprises a processor ( 1 ), a first working memory ( 51 ), a main memory ( 6 ) containing an operating system, a main program (P 1 ) and a secondary program (P 2 ), a second working memory ( 52 ), and switching means which, during the performance of the programs, makes it possible to switch from using one of the two working memories ( 51, 52 ) to using the other working memory, while preserving their contents. Switching means comprise at least one first block of registers ( 54 ) for storing the operating context of the programs in the main memory and a switching circuit ( 53 ) for enabling one of the working memories and the access registers (A 1 -a 3 ) (d 1 -d 3 ) associated with each memory ( 51, 52, 6 ) and controlled by said switching circuit ( 53 ).</p> |
