Motorola 700 Series User Manual

Memory Requirements
3-13
3
❏ self test (if system mode) has completed with error
❏ MPU clock speed calculation failure
After debugger initialization is done and none of the above
situations have occurred, the SYSFAIL∗ line is negated. This
indicates to the user or VMEbus masters the state of the debugger.
In a multi-computer configuration, other VMEbus masters could
view the pertinent control and status registers to determine which
CPU is asserting SYSFAIL∗. SYSFAIL∗ assertion/negation is also
affected by the
ENV command. Refer to Appendix A.
MPU Clock Speed Calculation
The clock speed of the microprocessor is calculated and checked
against a user definable parameter housed in NVRAM (refer to the
CNFG command description in Appendix A). If the check fails, a
warning message is displayed. The calculated clock speed is also
checked against known clock speeds and tolerances.
Memory Requirements
The program portion of 162Bug is approximately 512KB of code,
consisting of download, debugger, and diagnostic packages and
contained entirely in Flash or PROM.
The 162Bug executes from $FF800000 whether in Flash or PROM. If
you remove the jumper at J21 pins 7 and 8, the address spaces of the
Flash and PROM are swapped. For 700/800-series MVME162LX
boards, the factory shipping configuration is with jumper J21 pins
7-8 removed (so that 162Bug operates out of EPROM).
The 162Bug initial stack completely changes 8KB of SRAM memory
at addresses offset $C000 from the SRAM base address, at power-
up or reset.

Motorola 700 Series Specifications

General

Brand	Motorola
Model	700 Series
Category	Controller
Language	English

Summary

Safety Summary

Lithium Battery Caution

Warns about the danger of explosion if the lithium battery is replaced incorrectly.

Board Level Hardware Description

Hardware Preparation and Installation

Unpacking and Hardware Preparation

Jumper Configuration

Lists and explains the function of various jumper headers for board configuration.

MVME162LX Installation

Step-by-step instructions for installing the MVME162LX into a VME chassis.

Debugger General Information

162Bug Overview and Implementation

Installation, Startup, and Booting

Covers 162Bug installation, startup, autoboot, ROMboot, and network boot procedures.

Restarting the System

Disk and Network I/O Support

Using the 162Bug Debugger

Entering and Managing Commands

Explains entering commands, terminal I/O control, command syntax, and parameters.

Debugging Programs and Memory

The 162Bug Debugger Command Set

Summarizes the available 162Bug debugger commands and their syntax.

Configure and Environment Commands

Board Information Configuration

Environment Setup

Troubleshooting CPU Boards

Solving Startup Problems

Provides simple troubleshooting steps for CPU board startup difficulties.