当预取队列中只剩下 1 个字节时,8086 是否启动 1 个字节的代码获取?

Does 8086 initiate a 1-byte code fetch when there's only 1 byte left in the prefetch queue?

我知道8086架构有一个6字节的预取队列。

我的问题是,一旦一条指令移至执行单元并且 space 在队列中空闲,总线接口单元是否会获取另一条字节大小的指令?还是在再次开始获取之前等待释放特定数量的字节?

The BIU is programmed to fetch a new instruction whenever the queue has room for one (with the 8088) or two (with the 8086) additional bytes.

来源:http://ee.sharif.edu/~sakhtar3/articles/8086/8086%20Architecture.htm