Importance

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Abstract

In a microprocessor, a type information comparator compares type information of an execution result of an instruction with type information of the type information register corresponding to the data register which is requested by said instruction, and generates an exceptional interrupt in the case of disagreement. An input output execution unit simultaneously receives the data of the data register and the type information of the type information register corresponding to said data register and performs an input and output for an external via an external bus. A calculation execution unit simultaneously receives the data of the data register and the type information of the type information register corresponding to the data register, and executes calculation. An instruction controller decodes an instruction word given from the input output execution unit ,sends the instruction to the input and output execution unit and the calculation execution unit and inputs an exceptional interrupt from the type information comparator, and starts a specialized exceptional process.

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First Claim