在事件触发模式(event-only trigger modes)下,8位数据存于FIFO。这时FIFO 的高字节(DBGFH)没有被使用(总是保存和读取0s),数据只是简单的通过DBGFL 从FIFO 中取出。
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不过,此模式支持与事件引擎的同步交互,并可能接收到响应,指示最近的事件已触发了一个复杂事件。
However this pattern supports a synchronous interaction with the event engine and may receive a response which indicates that the latest event has triggered a complex event.
“管道(pipe)”模式:单个事件触发一系列的处理步骤,每个步骤执行特定的功能。
The "pipe" pattern: a single event triggers a sequence of processing steps, each performing a specific function.
要查看init和destroy事件触发,输入grails interactive以交互模式启动grails。
To see both the init and destroy events fire, start up grails in interactive mode by typing grails interactive.
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