KC10 FunctionalDescr Apr83

This document, published by Digital Equipment Corporation, provides a detailed functional description of the KC10 processor. It serves as a technical reference, outlining various instruction sets including general processing (APR0, APR1, APR2), external I/O, data movement, special debugging, and queue manipulation instructions.

A major focus is on the functional changes and enhancements implemented in the KC10 compared to previous Digital machines (like the KL10), especially in areas of virtual addressing, paging, and extended memory addressing capabilities. Further sections detail process context variables, system timers, and the mechanisms for handling traps, Unimplemented User Operations (UUOs), and interrupts. The document also specifies the layout and usage of special system pages such as the Executive Process Table (EPT), User Process Table (UPT), and I/O Page (IOP).