Motorola MVME197LE manual Restarting the System, Reset

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Debugger General Information

automatically scans for controllers and devices in a specified sequence until a valid bootable device containing a boot media is found or the list is exhausted. If a valid bootable device is found, a boot from that device is started. The controller scanning sequence goes from the lowest controller Logical Unit

3Number (LUN) detected to the highest LUN detected. (Refer to Appendix C for default LUNs).

At power-up, Network Boot is enabled, and providing the drive and controller numbers encountered are valid, the following message is displayed upon the system console:

“Network Boot in progress... To abort hit <BREAK>”

Following this message there is approximately a thirty-second delay while the debug firmware waits for the various controllers and drives to come up to speed. Then the actual I/O is begun: the program pointed to within the volume ID of the media specified is loaded into RAM and control passed to it. If, however, during this time you want to gain control without Network Boot, you can press the <BREAK> key or the software ABORT or RESET switches.

Network Auto Boot is controlled by parameters contained in the NIOT and ENV commands. These parameters allow the selection of specific boot devices, systems, and files, and allow programming of the Boot delay. Refer to the ENV command in Appendix A for more details.

Restarting the System

The user can initialize the system to a known state in three different ways: reset, abort, and break. Each has characteristics which make it more appropriate than the others in certain situations.

The debugger has a special feature upon a reset condition. This feature is activated by depressing the RESET and ABORT switches at the same time. This feature instructs the debugger to use the default setup/operation parameters in ROM versus the user’s setup/operation parameters in NVRAM. This feature can be used in the event the user’s setup/operation parameters are corrupted or do not meet a sanity check. Refer to the ENV command (Appendix A) for the ROM defaults.

Reset

Pressing and releasing the MVME197LE front panel RESET switch initiates a system reset. COLD and WARM reset modes are available and are selected by using the RESET command. By default, 197Bug is in COLD mode. During COLD reset, a total system initialization takes place, as if the MVME197LE had

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Installation Guide

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Contents MVME197LE Restricted Rights Legend Preface Document TerminologyBIT Related Documentation Document Title Motorola Publication NumberPage Page Safety Summary Safety Depends on YOU Contents Hardware Preparation and Installation Using the 197Bug Debugger Appendix a Configure and Environment Commands List of Figures Xiv List of Tables Xvi Introduction OverviewRequirements Features Specifications Block DiagramMVME197LE Specifications Block Diagram Bus Data Bus 256 BusSwitch MC88110 Address Data MUX AddressMezzanine Address Bus Memory ArrayFront Panel Switches and Indicators Functional DescriptionData Bus Structure MC88110 MPUFlash Memory Onboard DramBattery Backup RAM and Clock VMEbus InterfaceInterfaces Serial Port InterfacePrinter Interface Ethernet InterfaceScsi Interface Scsi TerminationPeripheral Resources Connectors Memory MapsInterrupt Sources Processor Bus Memory MapProcessor Bus Memory Map DramsizeAddress Range Devices Accessed Port Size Local Devices Memory MapVMEbus Accesses to the Local Peripheral Bus VMEbus Memory MapVMEbus Short I/O Memory Map Unpacking Instructions Hardware PreparationHardware Preparation and Installation VMEbus Connector P1 Configuration Switches Switch S1Configuration Switch S1 General Information S1-1 to S1-8 OFF -- All Ones Factory Configuration Installation Instructions Switch S6MVME197LE Module Installation System Considerations MVME197LEIG/D1 Hardware Preparation and Installation Overview of M88000 Firmware Description of 197BugInstallation and Start-up Comparison With M68000-Based Firmware197Bug Implementation Terminal to make sure XON/XOFF handshaking is enabled OteAutoboot ROMboot Network BootReset Restarting the SystemAbort BreakMemory Requirements SYSFAIL* Assertion/NegationMPU Clock Speed Calculation Terminal Input/Output Control DELDisk I/O Support Blocks Versus SectorsDevice Probe Function Disk I/O via 197Bug Commands Disk I/O via 197Bug System Calls DskcfigDefault 197Bug Controller and Device Parameters Disk I/O Error CodesNetwork I/O Support Bootp Protocol Module Physical Layer Manager Ethernet DriverUDP/IP Protocol Modules RARP/ARP Protocol ModulesNetwork Boot Control Module Network I/O Error CodesMultiprocessor Support Multiprocessor Control Register Mpcr MethodMpar Diagnostic Facilities Gcsr MethodDebugger General Information Entering Debugger Command Lines DebuggerSyntactic Variables Expression as a ParameterData Type Base Identifier Examples Address as a Parameter Address FormatsOffset Registers Entering and Debugging Programs Port NumbersCalling System Utilities From User Programs Preserving The Debugger Operating Environment197Bug Vector Table and Workspace Hardware FunctionsFloating Point Support CPU/MPU RegistersSingle Precision Real Double Precision RealScientific Notation 197Bug Debugger Command Set Debugger CommandsNocm Noma Name Nioc RL Addrbhw Using the 197Bug Debugger Configure Board Information Block Cnfg MISet Environment to Bug/Operating System ENV DTable A-1. ENV Command Parameters ENV Parameter and Options Default Meaning of DefaultConfigure and Environment Commands Ffbffffc Table A-1. ENV Command Parameters Memory Requirement s 01FFFFFF Table A-1. ENV Command Parameters Efffffff FF7FFFFF Table A-1. ENV Command Parameters Table A-1. ENV Command Parameters Table A-1. ENV Command Parameters DISK/TAPE Controller Data Disk/Tape Controller Modules SupportedDisk/Tape Controller Default Configurations Single Board Computers 7 DevicesMVME320 4 Devices MVME323 4 DevicesMVME327A 9 Devices MVME328 14 DevicesMVME350 1 Device IOT Command Parameters for Supported Floppy Types IOT ParameterDisk/Tape Controller Data Network Controller Data Network Controller Modules SupportedNetwork Controller Data Symbols NumericsIN-2 IN-3 Nvram A-2 XON/XOFF Index
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