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Texas Instruments Professional Computer: Device Service Routines Technical Reference

This document serves as a comprehensive technical reference for the Texas Instruments Professional Computer, focusing on its Device Service Routines (DSRs). It provides in-depth information on the system's architecture, including the structure and usage of System ROM, interrupt vector management, and the detailed operation of various hardware interfaces.

Key areas covered include graphics capabilities, disk subsystems, keyboard and interrupt controller functionality, system timers, parallel and serial communication ports, and the management of optional ROMs. The manual also details system booting procedures, CRT and disk device service routines, keyboard input handling, and Winchester disk controller operations.

This technical guide is essential for understanding the low-level operations and programming interfaces of the Texas Instruments Professional Computer system.

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