Description: Interrupt service s key is: 1. the protection enters when the interrupt condition, and when the withdrawal interrupt before regains enters the condition. 2. must in the interrupt routine establish whether to permit the interrupt re-entry, namely establishes the EX0 position. in this example has used the INT0 interrupt, generally the interrupt routine enters when should protect PSW, ACC as well as the interrupt routine use but non-its special-purpose register. This example INT0 program protection PSW, ACC,2 and so on three registers, and restored these three registers before the withdrawal. Moreover in the interrupt routine involves to when the essential data establishment should close the interrupt, namely when establishment does not permit the re-entry. In this example has not involved this kind of situation. the experiment starts when K8 should when H (high level) the end, must have the interrupt allocate first to L (low level) the end dials the H end again.
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- [Alpha] - This is a mixed about Alpha and test a p
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jijiucheshiyanchengxu.ASM
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