Pinout diagram of the National Semiconductor PACE central processing unit (CPU).
Source: Osborne 16-Bit Microprocessor Handbook, 1981, page 1-10, Figure 1-4.  Archive link: https://archive.org/details/OSBORNE_16-bit_Microprocessor_Handbook/page/n21/mode/2up
Diagram was requested at en.wp's Graphic Lab Illustration Workshop by User:Maury Markowitz
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