题目内容
The interrupt response of. 8051 MCU to the highest priority is unconditional.
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During interrupt initialization, only bit operation instruction can be used to set the state of interrupt controller, not byte operation instruction.
After the MCS-51 system is reset, the interrupt request flag TCON and scon are all 0.
The function of IE in interrupt permission register of MCS-51 single chip microcomputer is to open or shield the interrupt sources.答案:
When writing interrupt service program, the user can store an unconditional transfer instruction in the interrupt entry vector address to prevent the interrupt service program from being unable to accommodate.
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