The meaning and the software realization of the interrupt vector table relocation is introduced.

Structural study on a kind of directional fracture composite;

The principle and parameter design of directional fracture blast;

A new idea about micro-fracture mechanism is proposed to control blasting by directional fracture in view of acting potential mechanism of molecule microstructure.

Introduced the directional broken blasting technology and application results in Xingtai coal mine.

This paper aims at the characteristic that the IRQ interrupt vector addresses of ARM7 microcontroller are assigned on the interrupt vector registers dynamic,introduces the idea that roots the interrupt vectors into ROM,establishes the IRQ interrupt recovery system.

In this article,the hardware cascade structrue,port address,the system defination of interrupt vector and the system initiation of middle,and supper microcomputer s maskable interrupt system are analyzed,and it gives out the points for attention in application and takes Fangzheng MMX 166 to a concrete example.