Port mapped or mapped input output, Assembly Language

Port Mapped I/O or I/O Mapped I/O

I/O devices are mapped into a separate address space. This is generally accomplished by having a different set of signal lines to denote a memory access versus a port access.

The profit to this system is that less logic is required to decode a discrete address and therefore fewer prices to add hardware devices to a machine.

 

Posted Date: 10/10/2012 6:41:37 AM | Location : United States







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