177Bug Vector Table and Workspace | Motorola MVME177 instruction

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Debugger General Information

Calling System Utilities from User Programs

A convenient way of doing character input/output and many other useful operations has been provided so that you do not have to write these routines into the target code. You can access various 177Bug routines via one of the MC68060 TRAP instructions, using vector #15. Refer to the Debugging Package for Motorola 68K CISC CPUs User's Manual for details on the various TRAP #15 utilities available and how to invoke them from within a user program.

Preserving the Debugger Operating Environment

This section explains how to avoid contaminating the operating environment of the debugger. 177Bug uses certain of the MVME177 onboard resources and also offboard system memory to contain temporary variables, exception vectors, etc. If you disturb resources upon which 177Bug depends, then the debugger may function unreliably or not at all.

If your application enables translation through the Memory Management Units (MMUs), and if your application utilizes resources of the debugger (e.g., system calls), your application must create the necessary translation tables for the debugger to have access to its various resources.The debugger honors the enabling of the MMUs; it does not disable translation.

177Bug Vector Table and Workspace

As described in the Memory Requirements section in Chapter 3, 177Bug needs 64KB of read/write memory to operate. The 177Bug reserves a 1024-byte area for a user program vector table area and then allocates another 1024-byte area and builds an exception vector table for the debugger itself to use. Next, 177Bug:

❏Reserves space for static variables

❏Initializes these static variables to predefined default values

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Motorola MVME177 manual 177Bug Vector Table and Workspace

Contents

Single Board Computer Installation and Use Manual MVME177 Restricted Rights Legend Preface Page This equipment. Use extreme caution when handling, testing AdjustingPage Contents Page Page Flash Fill Test B-48Flash Patterns Test B-49 List of Figures List of Tables Introduction Model DesignationsMVME177 Model Designations Model Number Speed Major Differences Feature Description FeaturesMVME177 Features Speciﬁcations Cooling Requirements Characteristics SpeciÞcations MVME177 Speciﬁcations General Description FCC Compliance MVME712AM Bbram Equipment Required MVME712M MVME712A MVME712AM MVME712B Related Documentation System V/68 Motorola Document Title Number Support Information Manual Terminology Hardware Preparation and Installation Unpacking Instructions What you will need to do Refer to Overview of Start-up ProcedureStart-up Overview Appears You may also wish to obtainInitialize the clock Examine and/or change Hardware Preparation MVME177 Switches, Headers, Connectors, Polyswitches LEDs Conﬁguring MVME177 Headers Header Number Description ConÞguration Jumpers 1MB Eprom Header Number Description ConÞguration MVME177 Header Notes Do not remove all jumpers from J2. This may Disable the Sram Setup Instructions Bit J1 Pins Description MVME177 Module Installation Instructions MVME177 Module Installation Instructions Hardware Preparation and Installation System Considerations Hardware Preparation and Installation MVME177 Module Installation Instructions Hardware Preparation and Installation Controls and Indicators Abort Switch S1 Reset Switch S2 Front Panel Indicators DS1 DS4 Normal Address Range Memory MapsLocal Bus Memory Map Software Address Range Devices Accessed Port Size InhibitLocal Bus Memory Map Address Range Devices Accessed Port Size Local I/O Devices Memory Map $FFF77000 $FFF77FFF Reserved Multi-MPU Programming Considerations Local Reset OperationSoftware Initialization Sysreset Operating Instructions Data Bus Structure Functional Description IntroductionMVME177 Functional Description MPU Block Scsi Flash Memory MC68060 MPUFlash Memory and Eprom Eprom and Flash Control and Conﬁguration Jumper or Control Bit Control Condition Memory ConÞguration Eprom Sram Do not short circuit Onboard Dram Battery Backed Up RAM and Clock VMEbus Interface Interfaces Serial Port Interface RXD CTS DCD TXD RTS DTR TXD RTS DTR Parallel Port Interface Ethernet Interface Scsi Termination Local ResourcesScsi Interface Software-Programmable Hardware Interrupts Programmable Tick TimersWatchdog Timer Module Identiﬁcation Timing PerformanceLocal Bus Time-out Local Bus to Dram Cycle Times ROM Cycle Times Scsi Transfers Remote Status and Control LAN DMA Transfers AEIA-232-D Interconnections Pin Signal Number Mnemonic Signal Name and Description Table A-1. EIA-232-D Interconnections Pin Number Mnemonic Signal Name and DescriptionLevels of Implementation Signal Adaptations Sample Conﬁgurations Figure A-1. Middle-of-the-Road EIA-232-D Conﬁguration Figure A-2. Minimum EIA-232-D Connection Proper Grounding EIA-232-D Interconnections Overview of M68000 Firmware Description of 177Bug Debugger General Information Autoboot 177Bug Implementation Autoboot in progress... To abort hit Break ROMboot Network Boot Restarting the System Reset Abort Break SYSFAIL* Assertion/Negation MPU Clock Speed Calculation Memory Requirements Terminal Input/Output Control Disk I/O Support Blocks Versus Sectors Debugger General Information Device Probe Function IOC IOP IOT MAR MAW Disk I/O via 177Bug Commands IOI Input/Output Inquiry IOP Physical I/O to Disk BO Bootstrap Operating System BH Bootstrap and HaltIOT I/O Teach IOC I/O Control Dskcfig Network I/O Support Default 177Bug Controller and Device ParametersDisk I/O Error Codes Intel 82596 LAN Coprocessor Ethernet Driver UDP/IP Protocol Modules Tftp Protocol Module Bootp Protocol ModuleRARP/ARP Protocol Modules Network Boot Control Module Network I/O Error CodesMultiprocessor Support Multiprocessor Control Register Mpcr Method Status codes that may be set by the bus master are Gcsr Method Diagnostic Facilities Table B-1. Diagnostic Test Groups Test Group Description Using the 177Bug Debugger Entering Debugger Command Lines Syntactic Variables Boldface strings Expression as a Parameter Data Type Base IdentiÞer Examples String Numeric Value Literal Expression Result In Hex Table B-2. Debugger Address Parameter Formats Address as a ParameterAddress Formats Offset Registers 177BugMD 1327CDI Port Numbers Entering and Debugging Programs IOP 177Bug Vector Table and Workspace Hardware Functions Exception Vectors Used by 177Bug Table B-3. Exception Vectors Used by 177Bug Vector Offset Exception 177Bug Facility Using 177Bug Target Vector Table Creating a New Vector Table Except SUBQ.L 177Bug Generalized Exception Handler 177BugMD A7&30 Floating Point Data Types Floating Point SupportInteger Data Types Single Precision Real This format would appear in memory as Packed Decimal Real Double Precision RealExtended Precision Real Additions to Flash Commands Scientiﬁc Notation Flash Test Conﬁguration Acceptable Entries Erase TestFlash Fill Test Diagflash erase Flash Patterns Test Diagflash fill Default Flash Test Conﬁguration Figure B-1. Three Possible Mapping Options Sflash Command Sflashl Pflash ff800000 ff9fffff ffa00000 177Bug Debugger Command Set Table B-4. Debugger Commands Command Command Line Mnemonic Title SyntaxBI Range B W L Cnfg I M ENV D IOI CL Niot H a R n aPA n Nopa n Or SET nC VER E Debugger General Information Disk/Tape Controller Modules Supported First Second Controller Type Disk/Tape Controller Default Conﬁgurations Controller Address DeviceDevice Type Controller Device MVME323 -- Four Devices Controller MVME328 -- Fourteen Devices Controller LUN Address Device LUN Device Type IOT Command Parameters for Supported Floppy Types Floppy Types and Formats IOT Parameter Other Commands Conﬁgure Board Information Block Configure and Environment Commands Set Environment to Bug/Operating System ENV D = EFFFFFFF? Master Starting Address #2 = 00000000? Table D-1. ENV Command Parameters ENV Parameter and Options Default Meaning of Default LUN Network Auto Boot Memory Search Starting Address $02 refer to the Memory Requirements Accessible by the VMEbus. Default is Slave Ending Address #2 Master Ending Address #3 Short I/O VMEbus A16 Control ENetwork Controller Data Network Controller Modules Supported Controller Interface Type Clun Dlun Table F-1. Basic Troubleshooting Steps Condition Possible Problem Try This CTRL-Q Set mmddyyhhmm CR Envd CR De CR Env CRSt CR Index Index IN-7 IN-8 IN-9 IN-10 XON/XOFF