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Motorola MVME166IG/D2 manual Set Environment to Bug/Operating System, Env D

Models: MVME166IG/D2

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Configure and Environment Commands

Using the I option initializes the unused area of the board information block to zero.

Modification is permitted by using the M option of the command. At the end of the modification session, you are prompted for the update to Non-Volatile RAM (NVRAM). A Y response must be made for the update to occur; any other response terminates the update (disregards all changes). The update also recalculates the checksum.

Be cautious when modifying parameters. Some of these parameters are set up by the factory, and correct board operation relies upon these parameters.

Once modification/update is complete, you can now display the current contents as described earlier.

Set Environment to Bug/Operating System

ENV [;[D]]

The ENV command allows you to interactively view/configure all Bug operational parameters that are kept in Battery Backed Up RAM (BBRAM), also known as Non-Volatile RAM (NVRAM). The operational parameters are saved in NVRAM and used whenever power is lost.

Any time the Bug uses a parameter from NVRAM, the NVRAM contents are first tested by checksum to insure the integrity of the NVRAM contents. In the instance of BBRAM checksum failure, certain default values are assumed as stated below.

The bug operational parameters (which are kept in NVRAM) are not initialized automatically on power up/warm reset. It is up to the Bug user to invoke the ENV command. Once the ENV command is invoked and executed without error, Bug default and/or user parameters are loaded into NVRAM along with checksum data. If any of the operational parameters have been modified, these new parameters will not be in effect until a reset/powerup condition.

If the ENV command is invoked with no options on the command line, you are prompted to configure all operational parameters. If the ENV command is invoked with the option D, ROM defaults will be loaded into NVRAM.

A-2	MVME166 Single Board Computer Installation Guide

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Motorola MVME166IG/D2 manual Set Environment to Bug/Operating System, Env D

Contents

MVME166 MVME166IG/D2Restricted Right Legend Preface Page Ground the Instrument Safety Summary Safety Depends On YouDo Not Service or Adjust Alone Do Not Operate in an Explosive AtmosphereUse Caution When Exposing or Handling the CRT Do Not Substitute Parts or Modify EquipmentContents Hardware Preparation and Installation Using the 166Bug Debugger Appendix a Configure and Environment Commands List of Figures Xii List of Tables Xiv Introduction OverviewRelated Documentation Document Title Motorola Publication NumberIntroduction MVME166 Single Board Computer Installation Guide Features RequirementsMVME166 Specifications SpecificationsManual Terminology MVME166IG/D2 Block Diagram MVME166 Block DiagramFront Panel Switches and Indicators Functional DescriptionMC68040 MPU Data Bus StructureFlash Memory and Download Eprom Sram Onboard Dram VME Subsystem Bus VSB Interface Battery Backed Up RAM and ClockVMEbus Interface InterfacesMC68230 Parallel Interface/Timer Parallel Port Interface Ethernet InterfaceScsi Interface Local ResourcesScsi Termination Watchdog Timer ConnectorsProgrammable Tick Timers Local Bus TimeoutLocal Bus Memory Map Memory MapsNormal Address Range Devices Accessed Port Size Local Bus Memory MapAddress Range Devices Accessed Port Size Local I/O Devices Memory MapMVME166IG/D2 VSB Memory Map VMEbus Accesses to the Local BusVMEbus Memory Map VMEbus Short I/O Memory MapUnpacking Instructions Hardware PreparationScsi Terminator Enable Header J2 MVME166 Switches, Headers, Connectors, Fuses, and LEDs General Purpose Readable Jumpers on Header J3 System Controller Header J6Sram Backup Power Source Select Header J7 MVME166Installation Instructions MVME166 Module InstallationMVME166IG/D2 System Considerations MVME166IG/D2 Hardware Preparation and Installation Overview of M68000 Firmware Description of 166BugMVME166 Single Board Computer Installation Guide Installation and Startup 166Bug ImplementationDebugger General Information Bit J3 Pins Description Make sure XON/XOFF handshaking is enabled OteBootbug 166BBug ImplementationSetup System Parameters Execute User ProgramAutoboot ROMboot Network BootReset Restarting the SystemBreak AbortSYSFAIL* Assertion/Negation Memory Requirements MPU Clock Speed CalculationTerminal Input/Output Control DELDisk I/O Support Blocks Versus SectorsIOI Input/Output Inquiry Disk I/O via 166Bug CommandsDevice Probe Function IOP Physical I/O to DiskDisk I/O via 166Bug System Calls BO Bootstrap Operating SystemBH Bootstrap and Halt IOC I/O ControlDefault 166Bug Controller and Device Parameters Intel 82596 LAN Coprocessor Ethernet Driver Disk I/O Error CodesNetwork I/O Support UDP/IP Protocol ModulesNetwork I/O Error Codes Bootp Protocol ModuleNetwork Boot Control Module RARP/ARP Protocol ModulesMultiprocessor Support Multiprocessor Control Register Mpcr MethodMpar Diagnostic Facilities Gcsr MethodDebugger General Information Entering Debugger Command Lines DebuggerSyntactic Variables Italic stringsExpression as a Parameter ’TEST’Address as a Parameter Address FormatsDebugger Address Parameter Formats Format Example DescriptionOffset Registers Range of the closest offset register166BugMD 1327CDI Port Numbers Calling System Utilities from User Programs Entering and Debugging ProgramsPreserving the Debugger Operating Environment 166Bug Vector Table and Workspace Hardware FunctionsException Vectors Used by 166Bug Exception Vectors Used by 166BugUsing 166Bug Target Vector Table Creating a New Vector Table Buildx MOVEC.L VBR,A0 166Bug Generalized Exception Handler 166BugMD A7&30 Floating Point Support Floating Point Data TypesDouble Precision Real Single Precision RealExtended Precision Real Packed Decimal Real Scientific Notation166Bug Debugger Command Set Debugger CommandsIOC TT Addr Configure and Environment Commands Configure Board Information BlockSet Environment to Bug/Operating System ENV DTable A-1. ENV Command Parameters ENV Parameter and Options Default Meaning of DefaultConfigure and Environment Commands Nvram Memory Requirements section Base address of the local Slave Starting Address #2 Master Ending Address #2 Master Address Translation Address #4 Beginning address of an address VSBC2 Slave Address Offset #1 VSBC2 Requester Control VSBC2 Master Attributes #1 VSBC2 Master Ending Address #3 Table A-1. ENV Command Parameters DISK/TAPE Controller Data Disk/Tape Controller Modules SupportedDisk/Tape Controller Default Configurations Cisc Single Board Computers -- 7 DevicesMVME323 -- 4 Devices MVME328 -- 14 Devices IOT Command Parameters for Supported Floppy Types Disk/Tape Controller Data Network Controller Data Network Controller Modules SupportedNetwork Controller Data Index NumericsMVME166 Sngle Board Computer Installation Guide IN-3 IN-4 IN-5 XON/XOFF