TBC-11 Specifications

This document provides technical specifications and configuration information for the GRC TBC-11 board, designed for use in Q-bus backplane systems. The board includes several key functions:

• Terminator: Provides 220-ohm impedance termination for the Q-bus.
• Power Sequencing: Manages LSI-11 power-up and power-down, including support for power-fail software routines to save and restore critical system registers.
• PROM Bootstrap: Provides space for 8-bit PROMs with configurable window sizes and starting addresses.
• Console Panel Logic: Interfaces with external switches and LEDs for system control and monitoring.
• Programmable Line Time Clock (LTC): Generates interrupts synchronized with the AC line frequency, configurable via software or external inputs.

The manual also includes detailed instructions on physical placement in the backplane, comprehensive tables for jumper configurations for PROM settings and power options, as well as cable pinout definitions.