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Memory and I/O Subsystems. Memory Subsystems. Memory hierarchy Memory types RAM Static Dynamic ROM Size designations: “ A x B ” A words of memory log 2 A address connections B bits per word B data connections. Input/ Output. CPU. Memory. 32. Data Bus. System Bus. 32.
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Memory Subsystems • Memory hierarchy • Memory types • RAM • Static • Dynamic • ROM • Size designations: “A x B” • A words of memory log2A address connections • B bits per word B data connections
Input/Output CPU Memory 32 Data Bus System Bus 32 Address Bus Control Bus
RAM Subsystem RAM Cells Address Decoder Memory,I/O Data Bus System Bus Address Bus Control Bus
I/O Interface Control I/O Device Status Data Address Decoder Data Bus System Bus Address Bus Control Bus
