MXV11-B

This document is a configuration guide for the Digital Equipment Corporation's MXV11-B module (M7195).

The MXV11-B is a dual-height, multi-function option module compatible with LSI-11, LSI-11/2, and LSI-11/23 processors, supporting 16-bit, 18-bit, and 22-bit Q-bus systems.

Key features of the MXV11-B include:

• Read/write memory (MOS RAM) with 5V battery backup.
• Read-only memory (ROM) with window map logic.
• Two asynchronous serial line ports (SLU0, SLU1).
• Multiple line time clock frequencies.
• An LED diagnostic display register.

The guide provides a detailed process for configuring the module, including:

1. A configuration checklist to determine desired settings.
2. Jumper location diagrams and flow diagrams to guide the decision-making process.
3. Extensive tables detailing specific jumper settings for various parameters.

Users can configure aspects such as:

• Connecting the system console (SLU1), which affects the availability of other features like halt/reboot on break, console address, and specific ROM addressing.
• Setting addresses and vectors for the serial line units (SLU0 and SLU1).
• Installing and addressing different types and sizes of ROM (MXV11-B2 and user ROMs), including options for page mode addressing.
• Selecting the system bus type (Q-bus or Q-22 bus).
• Determining the source and frequency of the line time clock (LTC), and whether its control is software-driven.
• Configuring baud rates for the serial line ports (hardware or software controlled).
• Enabling battery backup for RAM memory and setting its starting address.

The document emphasizes that certain features are only selectable if the MXV11-B is strapped for console port and bootstrap mode, and provides cautions regarding potential conflicts with other system control registers.