Processor chip simulator and power failure test method

Abstract

The invention discloses a processor chip simulator. A simulation chip is provided with a nonvolatile memory controller and a nonvolatile memory, a power supply detection module receives and detects the power supply signal of outside for the processor chip through a power supply signal line, the power supply detection module is connected with the simulation chip through a simulation chip reset signal line, and is connected with the nonvolatile memory controller through a nonvolatile memory reset signal line; if the processor chip stops supplying power, an effect reset signal is output to the nonvolatile memory controller by the power supply detection module; and if the power supply detection module detects that the processor chip supplies power again, the effective reset signal is output tothe simulation chip. The invention also discloses a power failure test method for the processor chip simulator. By use of the processor chip simulator and the power failure test method, the power failure characteristics of the nonvolatile memory can be simulated.

Description

technical field [0001] The invention relates to the field of processor chip debugging, in particular to a processor chip emulator supporting power-down testing. The invention also relates to a method for power-down testing of a processor chip emulator. Background technique [0002] There is a user program developed by the user in the processor chip. In the writing and debugging of the user program, the tool used is generally an emulator. The emulator uses an emulation chip containing various functions of the product processor chip to simulate the working behavior of the product processor chip, and the emulation chip and other parts of the emulator (program memory for storing user programs, data memory for storing data, and user The integrated development environment on the computer, etc.) cooperates to realize the simulation operation of the user program and various debugging functions. [0003] Many processor chips have non-volatile memory, such as Flash (flash memory), E...

AI Technical Summary

Problems solved by technology

However, after the processor chip on the emulator is powered off, it is necessary for the emulation chip to continue to execute the monitoring program and export various states, memory, register data, etc. of the processor chip. Generate a global reset of the processor chip to replace the power-off equivalently, but due to the occurrence of the global reset, the chip state when the power-off occurs is destroyed, and the user cannot view and export the chip state when the power-off occurs during debugging.

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