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Line 23: The parts of the execution units, and the execution units themselves are interconnected by a bundle of wires called a [[Computer bus\|bus]]. Programmers develop microprograms. The basic tools are software: A [[microassembler]] allows a ~~programmmer~~programmer to define the table of bits symbolically. A [[simulator]] program executes the bits in the same way as the electronics (hopefully), and allows much more freedom to debug the microprogram. A typical micromachine's control word has a field, a range of bits, to control each piece of electronics in the CPU. For example, one simple arrangement might be:

Microcode: Difference between revisions