内部和外部地址总线
根据我的知识,我知道有外部和内部数据总线,但我想知道是否有内部和外部地址总线,因为我看到一张显示英特尔 8088 微处理器的图表,上面提到了这两件事,有人介意解释一下这两者吗?谢谢
Based on my knowledge,i know there is external and internal data bus,but i wonder if there is internal and external address bus as i saw a diagram showing intel 8088 microprocessor with this two thing mention,anybody mind explain the two of it??thanks
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是的。 8088内部地址总线是20位总线。与外部芯片的接口通过 20 个引脚,其中 8 个与外部数据总线共享。片外硬件使用
ALE
(地址锁存启用
)信号来锁存引脚上存在的 20 位地址。Yes. The 8088 internal address bus was a 20-bit bus. The interface to external chips was via 20 pins, of which 8 are shared with the external data bus. The
ALE
(Address Latch Enable
) signal is used by off-chip hardware to latch the 20-bit address while it is present on the pins.