초록 ▼

A central processing unit (CPU) carries out selected reset interruption processing by using a vector address preset in accordance with an interruption source to generate an address to a data table whose contents are used to initialize selected registers. In this manner, the CPU can be reset without

A central processing unit (CPU) carries out selected reset interruption processing by using a vector address preset in accordance with an interruption source to generate an address to a data table whose contents are used to initialize selected registers. In this manner, the CPU can be reset without having first stored the processing state of the CPU in response to a reset interrupt request, without the need for extensive dedicated reset hardware, and with the ability to select desired reset values that can differ as between different interrupts and can be changed from time to time.

대표청구항 ▼

A central processing unit comprising: means responsive to a reset interrupt signal and independent of dedicated circuitry for fetching arbitrary initialization data from an external data bus connected thereto, said internal registers including a program counter and a data bank register; and means re

A central processing unit comprising: means responsive to a reset interrupt signal and independent of dedicated circuitry for fetching arbitrary initialization data from an external data bus connected thereto, said internal registers including a program counter and a data bank register; and means responsive to said interrupt signal for initializing said internal registers based on the initialization data fetched by said fetching means, said initializing means is configured to independently initialize said internal registers without saving a processing state of said central processing unit.