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Motorola MVME187 manual Buffer Overruns, SCSI Interface, SCSI Termination

Models: MVME187

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Buffer Overruns

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Board Level Hardware Description

Buffer Overruns

Because the 82596CA has small internal buffers and the VMEbus has an undefined latency period, buffer overrun may occur if the DMA is programmed to access the VMEbus. Therefore, the 82596CA should not be programmed to access the VMEbus. Support functions for the 82596CA are provided by the PCCchip2.

Refer to the 82596CA user's guide for detailed programming information.

SCSI Interface

The MVME187 provides for mass storage subsystems through the industry-standard SCSI bus. These subsystems may include hard and floppy disk drives, streaming tape drives, and other mass storage devices.

The SCSI interface is implemented using the NCR 53C710 SCSI I/O controller.

Support functions for the 53C710 are provided by the PCCchip2. Refer to the 53C710 user's guide for detailed programming information.

SCSI Termination

Because this board has no provision for SCSI termination, you must ensure that the SCSI bus is terminated properly.

❏If the SCSI bus ends at the P2 Adapter, termination resistors must be installed on the R1, R2, and R3 sockets using three 8- pin SIP resistors. Note: +5V power to the SCSI bus TERM power line and termination resistors is provided through a fuse located on the P2 transition board.

❏If there are additional SCSI mass storage devices in your system, make sure that terminators are installed on the last device in the SCSI chain.

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Motorola MVME187 manual Buffer Overruns, SCSI Interface, SCSI Termination

Contents

MVME187 RISC Single Board Computer Installation Guide MVME187IG/D4Restricted Rights Legend Preface Use Caution When Exposing or Handling the CRT Safety Summary Safety Depends On YouDo Not Service or Adjust Alone Dangerous Procedure WarningsThis equipment generates, uses, and can radiate electro Page Contents Static RAM Optional SRAM Battery Backup Onboard DRAM Front Panel Switches and LEDs Data Bus StructureLocal Bus Arbitration M88000 MPU EPROM Programmable EPROM Features Battery Backed Up RAM and Clock VMEbus Interface I/O InterfacesCompleting the Installation 3-24 Starting the System Jumper Settings Optional Jumper SettingsInstalling the Hardware Installing the MVME187 in the Chassis Powering Up the System 3-25 Initializing the Real-Time ClockNetwork Boot Sequence 4-8 Restarting the System Reset Abort Break Booting and Restarting 187Bug 4-5 Starting Up 187Bug 4-6 AutobootAutoboot Sequence 4-6 ROMboot ROMboot Sequence 4-7 Network Boot BO Bootstrap Operating System 4-15 BH Bootstrap and HaltThe 187Bug Debugger Command Set 5-15 This Appendix Covers A-1 Multiprocessor Address Register MPAR 4-22 MPCR Powerup Sequence187Bug Diagnostic Test Groups 4-27 This Chapter Covers MPCR Status CodesSignal Adaptations E-4 Sample ConÞgurations E-4 Proper Grounding E-7 Using MVME712A/AM and MVME712B List of FiguresMVME187 General Block Diagram Typical Transition Module Peripheral Port ConnectorsList of Tables This Chapter Covers 1Introduction to the MVME187 Installation GuideAbout this Manual Terminology, Conventions, and Deﬁnitions Used in this Manual Signal Name ConventionsData and Address Parameter Numeric Formats Data and Address Size Deﬁnitions Assertion and Negation ConventionsBig-Endian Byte Ordering Bit Value Descriptions Control and Status Bit DeﬁnitionsTrue/False Bit State Deﬁnitions The bit can be set and cleared under softwareRelated Documentation Document Set for MVME187-0xx BoardOther Applicable Motorola Publications Additional Manuals for this BoardAlso available but not included in the set Non-Motorola Peripheral Controllers Publications Bundle MC68230 Parallel Interface Timer PI/T Data Sheet Introduction to the MVME187 Installation GuideData Sheet Part NumberData, IEC 821 BUS Applicable Non-Motorola PublicationsANSI/IEEE Std Sheet, order numberIntroduction to the MVME187 Installation Guide 1-10General Description Board Level Hardware DescriptionThis Chapter Covers Onboard Memory Mezzanine Module SCSI Mass Storage InterfaceParallel Printer Port Serial PortsEthernet Transceiver Interface Features 187Bug FirmwareFour 32-bit tick timers for periodic interrupts Watchdog timer Conformance to Requirements SpeciﬁcationsTable 2-1. MVME187 General Speciﬁcations Board Level Overview ConnectorsFigure 2-1. MVME187 General Block Diagram AdaptersTransition Modules ASICsTable 2-2. Bus Transfers VMEchip2 ASICPCCchip2 ASIC MEMC040 Memory Controller ASIC Functional DescriptionMCECC Memory Controller ASIC Table 2-3. Front Panel Switches Front Panel Switches and LEDsTable 2-4. Front Panel LEDs M88000 MPU Data Bus StructureLocal Bus Arbitration EPROM Programmable EPROM FeaturesStatic RAM Optional SRAM Battery Backup Onboard DRAM Stacking Mezzanines DRAM Programming ConsiderationsBattery Backed Up RAM and Clock I/O Interfaces VMEbus InterfaceSerial Port Interface Serial Interface Programming Considerations Parallel Port Interface Ethernet Interface SCSI Interface Buffer OverrunsSCSI Termination Local Bus Timeout Programmable Tick TimersWatchdog Timer Local ResourcesLocal Bus Memory Map Memory MapsNormal Address Range Devices Table 2-5. Local Bus Memory Map Table 2-6. Local I/O Devices Memory Map Table 2-6. Local I/O Devices Memory Map Continued VMEbus Memory Map VMEbus Accesses to the Local BusVMEbus Short I/O Memory Map Unpacking the Equipment Hardware Preparation and InstallationThis Chapter Covers Overview of Startup Procedure Table 3-1. Startup OverviewComputer SCSI Software Table 3-1. Startup Overview Continuedobtain the Single Board UserÕs Manualpage Table 3-1. Startup Overview Continuedobtain the Debugging Preparing the Hardware Modifying Conﬁguration before InstallationOption Modiﬁcation Figure 3-1. MVME187 Switches, Headers, Connectors, Fuses, and LEDs MVMEEPROM Location Jumper SettingsChecking the 187Bug EPROMs EPROM OrientationGeneral Purpose Software Readable Header J1 Optional Jumper SettingsReserved/DeÞned Bits GPI0 - GPI3 Table 3-3. Factory Settings for J1 General Purpose Readable JumpersTable 3-2. J1 Bit Descriptions GPI4 - GPI7System Controller Header J2 Table 3-4. Settings for J2 System Controller HeaderSystem Optional SRAM Backup Power Source Select Header J6 Serial Port 4 Clock Conﬁguration Select Headers J7 and J8Table 3-5. Settings for Optional J6 SRAM Backup Power Source Select HeaderSerial Port Table 3-6. Settings for J7 and J8 Serial Port 4 Clock ConﬁgurationSelect Headers clockPreparing the MVME187 for Installation Table 3-7. MVME187 Preparation ProcedureTable 3-8. Chassis Preparation/Slot Selection Procedure Preparing the System ChassisInstalling the MVME187 in the Chassis Installing the HardwareTable 3-9. MVME187 Installation Procedure Installing the Hardware Transition Modules and Adapter Boards Overview3-17 Hardware Preparation and Installation Figure 3-2. Typical Internal SCSI and Serial Port Connections3-18 Some connection diagrams are in the Single Board Computer Equipment ConnectionsTable 3-10. Peripheral Connections External SCSI drivesConnecting Peripherals Installing Transition Modules and Adapter BoardsTable 3-11. Transition Module and Adapter Board Installation Overview baud rate 9600 baud default baud rate of MVME187 ports at Table 3-12. Peripheral Connection Proceduresparity disabled no parity powerupFigure 3-3. Using MVME712A/AM and MVME712B 712A Figure 3-4. Typical Transition Module Peripheral Port ConnectorsMVME To J10 onStarting the System Completing the InstallationTable 3-13. Installation Completion Procedure Table 3-14. System Startup OverviewExamining and/or Changing Environmental Parameters Powering Up the SystemInitializing the Real-Time Clock Board ModeSET MMddyyhhmm+/-CALC Table 3-15. RTC Initialization ProcedureProgramming the PCCchip2 and VMEchip2 187-BugSET 0522961037 ReturnSystem Considerations Backplane Power ConnectionsGlobal Bus Timeout Memory Address RangesGCSR Location Monitor Register Multiple Module Cage ConﬁgurationEthernet LAN +12 Vdc Fuse Storage and the Real-Time Clock SCSI Bus Termination187-Bugps Return Hardware Preparation and Installation 3-30Overview of M88000 Firmware Debugger General InformationIntroduction to MVME187Bug This Chapter CoversDescription of 187Bug Command FacilitiesTrap #496 Routines Debugger or Diagnostic Directories Keyboard ControlComparison with M68000-Based Firmware 187Bug ImplementationBooting and Restarting 187Bug Memory RequirementsAutoboot Sequence AutobootStarting Up 187Bug ROMboot ROMboot SequenceNetwork Boot Network Boot SequenceRestarting the System During WARM reset ResetDuring COLD reset AbortAbort Sequence BreakSYSFAIL* Assertion/Negation Break SequenceMPU Clock Speed Calculation Parameter Tables Disk I/O SupportDisk Support Facilities Supported ControllersBlocks Versus Sectors Device Probe FunctionIOI Input/Output Inquiry Disk I/O via 187Bug CommandsBO Bootstrap Operating System IOP Physical I/O to DiskController Command Packets BH Bootstrap and HaltDisk I/O via 187Bug System Calls Default 187Bug Controller and Device Parameters Disk I/O Error Codes sourceIntel 82596 LAN Coprocessor Ethernet Driver Network I/O SupportUDP/IP Protocol Modules RARP/ARP Protocol Modules BOOTP Protocol ModuleNetwork Boot Control Module TFTP Protocol ModuleMultiprocessor Support Network I/O Error CodesMultiprocessor Control Register MPCR Method MPCR Status Codes MPCR Powerup SequenceMultiprocessor Address Register MPAR 3. As the initialization proceeds, the execution path comes to the prompt routine Global Control and Status Register GCSR Method Diagnostic Facilities Table 4-1. Diagnostic Monitor Commands/PreﬁxesCommand Table 4-2. Diagnostic UtilitiesTable 4-1. Diagnostic Monitor Commands/Preﬁxes Command187Bug Diagnostic Test Groups Table 4-3. Diagnostic Test GroupsDebugger General Information 4-28Terminal Input/Output Control Using the 187Bug DebuggerEntering Debugger Command Lines This Chapter CoversUsing the 187Bug Debugger Debugger Command Syntax Syntactic Variables Expression as a ParameterAddress as a Parameter Address Formats Port Numbers Offset RegistersCreating a Program with the Assembler/Disassembler Entering and Debugging ProgramsDownloading an S-Record Object File Calling System Utilities from User Programs Read the Program from DiskPreserving the Debugger Operating Environment 187Bug Vector Table and WorkspaceException Vectors Used by 187Bug Floating Point SupportHardware Functions CPU/MPU Registers1. The sign field is the first field and is a binary field 2 hex digits. Bias = $7F Single Precision RealDouble Precision Real 3 hex digits. Bias = $3FFScientiﬁc Notation AS addr The 187Bug Debugger Command SetTable 5-1. Debugger Commands BC range del addr B H WDMA range del addr del vdir del am del blk Table 5-1. Debugger Commands ContinuedHE command DS addr count del addrdel device LUN del block # Table 5-1. Debugger Commands ContinuedMAW controller LUN MAR controller LUN del device LUNRS reg del exp del addr S D Table 5-1. Debugger Commands ContinuedSYMS symbol-name S SET mmddyyhhmm n CThis Appendix Covers AConﬁgure and Environment CommandsConﬁguring the Board Information Block Page Setting Environment to Bug/Operating System ENV DTable A-1. ENV Command Parameters The parameters to be configured are listed in the following tableTable A-1. ENV Command Parameters Continued FFBFFFFCTable A-1. ENV Command Parameters Continued Table A-1. ENV Command Parameters Continued Table A-1. ENV Command Parameters Continued FFFFCE0FTable A-1. ENV Command Parameters Continued 01FFFFFF01FF Table A-1. ENV Command Parameters ContinuedGuide FFE1FFFFTable A-1. ENV Command Parameters Continued EFFFFFFFTable A-1. ENV Command Parameters Continued Table A-1. ENV Command Parameters Continued Configure and Environment Commands A-14BDisk/Tape Controller Data Disk/Tape Controller Modules SupportedDisk/Tape Controller Default Conﬁgurations $XXXXXXXXMVME327A -- 9 Devices MVME328 -- 14 DevicesIOT Command Parameters for Supported Floppy Types MVME350 -- 1 DeviceFloppy Types and Formats Other CharacteristicsIOT Parameter DSDD5Disk/Tape Controller Data CNetwork Controller Data Table C-1. Network Controller Access DataNetwork Controller Modules Supported Table C-1. Network Controller Access Data Continued DTroubleshooting the MVME187 Solving Startup Problems Table D-1. Troubleshooting StepsTable D-1. Troubleshooting Steps Continued Table D-1. Troubleshooting Steps Continued III. Debug187-Diag Table D-1. Troubleshooting Steps Continued3. When prompted to Update Non-Volatile RAM, type in BREAKTable D-1. Troubleshooting Steps Continued Troubleshooting the MVME187 Solving Startup Problems EEIA-232-D Interconnections IntroductionTable E-1. EIA-232-D Interconnections GroundingLevels of Implementation Table E-1. EIA-232-D Interconnections ContinuedSignal Adaptations Sample ConﬁgurationsFigure E-1. Middle-of-the-Road EIA-232-D Conﬁguration Figure E-2. Minimum EIA-232-D Connection Proper Grounding EIA-232-D Interconnections Index SymbolsNumerics I N D E default configurations B-2 error codessupport via 187Bug commands 4-15 via 187Bug system calls I N D EI N D E local bus local I/O devices 2-26 VMEbus 2-28 VMEbus short I/O I N D EI N D E I N D E see also CD2401 scientific notation 5-14 SCON LEDI N D E in NVRAMedge significant 1-2 level significant see also CD2401 serial port 1 5-8 serial port 2I N D E