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Quiz 7
ECE 331
April 8, 2009
Question
1. What is the main difference between memory mapped I/O and isolated I/O addressing?
Isolated I/O addressing requires
an extra pin, M/IO’
2. For an external I/O device, what hardware unit (what type of circuit) can be used to determine
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Unformatted text preview: the device address of from the address bus signals. 1) decoder or 2) comparator 3. What controls if a bidirectional data port is an input or an output? data direction register...
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- Spring '08
- M.SHANBLATT
- address bus, Input/output, Memory Mapped I/O, external I/O device
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