than main memory. In some architectures, port-mappedI/O operates via a dedicated I/O bus, alleviating the problem. One merit of memory-mappedI/O is that
traditional computer architectures, the CPU and main memory tend to be tightly coupled, with the internal bus connecting the two being known as the system bus. In
control store The memory that stores the microcode of a CPU. Conventional Peripheral Component Interconnect (Conventional PCI) A computerbus for attaching