KSCOM Microprocessor Commands and Messages Mar79

This document, "KSCOM Microprocessor Commands and Messages," is a 1979 specification from Digital Equipment Corporation for the TOPS-10 monitor (version 6.03A LIR) on a DECSYSTEM-2020 system.

It outlines the Microprocessor Console Program, which manages the Console Terminal (CTY). The CTY operates in either console mode (for booting, diagnostics, and error recovery) or user mode (for TOPS-10 operations), with instructions provided on how to switch between these modes and format rules for console input.

A substantial glossary details numerous microprocessor commands, categorized by function (e.g., Boot, Enable/Disable, Examine, Mark/Unmark Microcode, Miscellaneous, Read CRAM, Select Device, Set and Deposit, Start/Stop Clock, Start/Stop Microcode, and Start/Stop Program commands).

The document also covers common error messages for troubleshooting, the KLINIK remote diagnosis link (including its operational states and usage for remote support by Digital personnel), descriptions of console status registers, and KS10 halt status codes, which explain the reasons for system halts.