31. Memory and Bus Architecture
The chapter provides an in-depth exploration of bus architectures, focusing on the functionality and design of single and multiple bus systems, particularly the three-bus architecture. It discusses the complexities of instruction execution in these architectures, emphasizing the differences in control signals and timing cycles required for various operations. Special attention is given to how different configurations can impact performance and efficiency in instruction processing.
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What we have learnt
- The memory address register and memory data register play key roles in transferring data between memory and registers.
- The complexities involved in executing instructions in a three-bus architecture can lead to increased control signals and possible changes in timing cycles.
- Different bus architectures have distinct advantages and can either simplify or complicate the execution of program instructions.
Key Concepts
- -- Bus Architecture
- The design structure of data pathways in a computer that connect different components, allowing them to communicate and share data.
- -- Memory Address Register (MAR)
- A register that holds the address of the memory location to be accessed for reading or writing data.
- -- Memory Data Register (MDR)
- A register that stores the data being transferred to or from the memory location addressed by the MAR.
- -- Control Signals
- Signals used to manage the operations of components within the CPU and coordinate the execution of instructions.
- -- ThreeBus Architecture
- A type of bus architecture that allows data to flow between three different pathways, increasing the potential for parallel processing.
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