Here is a PDF file that will let you easily print the CPU Architecture drawing full size on A4 or 8.5x11 sized paper.
This is slightly modified from the book version to (hopefully) show that the decode logic is not a "Chip" that the student should write, just a collectoin of logic gates in CPU.hdl. It also shows that some of the control signals generated by parts in the CPU are used by the control logic.
CPU-diagram2.pdfFor students who have not yet read chapter 5, the (c) circles represent one or more control signals. For example, the (c) leading ion to the D Register is its 'load' input.