Cosc 2150: Computer Organization. Chapter 4: CPU. CPU Basics. The computer’s CPU fetches, decodes, and executes program instructions. The two principal parts of the CPU are the datapath and the control unit.
Chapter 4: CPU
These are point-to-point buses:
We will return to this important equation in later chapters.
We study I/O in detail in chapter 7.
The next slide illustrates these two ideas.
The next slide shows a flowchart of this process.
A block diagram of a hardwired control unit is shown on the following slide.
This is how a generic microprogrammed control unit might look.
We delve into the “RISC versus CISC” argument in Chapter 9.
What was the largest memory that the 8086 could address?
How does this design affect performance?