Local Resources, Programmable Tick Timers | Motorola MVME162

Functional Description	1

Local Resources

The MVME162 includes many resources for the local processor. These include tick timers, software-programmable hardware interrupts, watchdog timer, and local bus timeout.

Programmable Tick Timers

Six 32-bit programmable tick timers with 1 μs resolution are provided, two in the VMEchip2 and four in the MCchip. The tick timers can be programmed to generate periodic interrupts to the processor. Refer to the VMEchip2 and MCchip in the MVME162 Embedded Controller Programmer’s Reference Guide for detailed programming information.

Watchdog Timer

A watchdog timer function is provided in the VMEchip2 and the MCchip. When the watchdog timer is enabled, it must be reset by software within the programmed time or it times out. The watchdog timer can be programmed to generate a SYSRESET signal, local reset signal, or board fail signal if it times out. Refer to the VMEchip2 and the MCchip in the MVME162 Embedded Controller Programmer’s Reference Guide for detailed programming information.

The watchdog timer logic is duplicated in the VMEchip2 and MCchip ASICs. Because the watchdog timer function in the VMEchip2 is a superset of that function in the MCchip (system reset function), the timer in the VMEchip2 is used in all cases except for the version of the MVME162 which does not include the VMEbus interface ("No VMEbus Interface" option).

Software-Programmable Hardware Interrupts

Eight software-programmable hardware interrupts are provided by the

VMEchip2. These interrupts allow software to create a hardware interrupt.

Local Bus Timeout

The MVME162 provides a timeout function in the VMEchip2 and the MCchip for the local bus. When the timer is enabled and a local bus access times out, a Transfer Error Acknowledge (TEA) signal is sent to the local bus master. The timeout value is selectable by software for 8 μsec, 64 μsec, 256 μsec, or infinity. The local bus timer does not operate during VMEbus bound cycles. VMEbus bound cycles are timed by the VMEbus access timer and the VMEbus global timer.

MVME162IG/D2

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Motorola MVME162 Local Resources, Programmable Tick Timers, Watchdog Timer, Software-Programmable Hardware Interrupts

Contents

MVME162IG/D2 MVME162 Restricted Rights Legend Preface Page Safety Summary Safety Depends On You Page Overview Introduction Document Title Motorola Publication Number Related Documentation Introduction MVME162 Embedded Controller Installation Guide Requirements Features MVME162 Specifications SpecificationsCharacteristics Specifications Special Considerations for Elevated Temperature Operation Manual Terminology MVME162 Block Diagram Block Diagram Functional Description Front Panel Switches and Indicators MC68040 or MC68LC040 MPU Data Bus StructureNo-VMEbus-Interface Option MC68xx040 Cache Dram Options Memory OptionsSram Options About the Battery Eprom and Flash Battery Backed Up RAM and Clock Interfaces VMEbus Interface and VMEchip2Serial Communications Interface MVME162 Serial Port MVME162 Serial Port Optional LAN Ethernet Interface IndustryPack IP Interfaces Scsi Termination Optional Scsi Interface Watchdog Timer Programmable Tick TimersLocal Bus Timeout Local Resources Memory Maps ConnectorsLocal Bus Arbiter Local Bus Arbitration Priority Normal Address Range Local Bus Memory MapLocal Bus Memory Map MVME162 Embedded Controller Installation Guide Address Range Device Port Width Size Local Bus I/O Devices Memory Map MVME162 Embedded Controller Installation Guide VMEbus Memory Map VMEbus Accesses to the Local BusVMEbus Short I/O Memory Map Board Level Hardware Description Hardware Preparation Unpacking Instructions SIM Selection Hardware Preparation Serial Interface Module Part Numbers Configuration Part Number Model Standard System Controller Select Header J1 Installation of New SIM J12 Clock Select Header J12 for Serial Port Eprom Size Select Header J21 Sram Battery Backup Source Select Header J20 J22 General Purpose Readable Jumpers Header J22 IP Installation on the MVME162 Installation Instructions MVME162 Module Installation System Considerations MVME162 Embedded Controller Installation Guide MVME162 EIA-232-D Connection Diagram, MVME712M Sheet 1 MVME162 EIA-232-D Connection Diagram, MVME712M Sheet 2 MVME162 EIA-232-D Connection Diagram, MVME712M Sheet 3 MVME162 EIA-232-D Connection Diagram, MVME712M Sheet 4 MVME162 EIA-232-D Connection Diagram, MVME712M Sheet 5 MVME162 EIA-232-D Connection Diagram, MVME712M Sheet 6 SIM07 MVME162 EIA-530 Connection Diagram Sheet 1 Hardware Preparation and Installation MVME162 EIA-530 Connection Diagram Sheet 2 MVME162 EIA-232-D Connection Diagram, MVME712A/AM/-12/-13 Sheet 1 MVME162 EIA-23-D Connection Diagram, MVME712A/AM/-12/-13 Sheet 2 MVME162 EIA-232-D Connection Diagram, MVME712A/AM/-12/-13 Sheet 3 MVME162 EIA-232-D Connection Diagram, MVME712A/AM/-12/-13 Sheet 4 Hardware Preparation and Installation Description of 162Bug Overview of M68000 Firmware MVME162 Embedded Controller Installation Guide 162Bug Implementation Installation and Startup Debugger General Information Bit J22 Pins Description Ote Autoboot ROMboot Restarting the System Network Boot Abort ResetBreak SYSFAIL* Assertion/Negation Memory RequirementsMPU Clock Speed Calculation Terminal Input/Output Control DEL Blocks Versus Sectors Disk I/O Support Device Probe Function Disk I/O via 162Bug CommandsIOI Input/Output Inquiry IOP Physical I/O to Disk BH Bootstrap and Halt BO Bootstrap Operating SystemDisk I/O via 162Bug System Calls IOC I/O Control Default 162Bug Controller and Device Parameters Network I/O Support Disk I/O Error CodesIntel 82596 LAN Coprocessor Ethernet Driver UDP/IP Protocol Modules Network Boot Control Module Bootp Protocol ModuleNetwork I/O Error Codes RARP/ARP Protocol Modules Multiprocessor Control Register Mpcr Method Multiprocessor Support Mpar Gcsr Method Diagnostic Facilities Manufacturing Test Process Debugger Entering Debugger Command Lines Italic strings Syntactic Variables Data Type Base Identifier Examples Expression as a ParameterString Numeric Value Literal Hexadecimal Address Formats Address as a ParameterExpression Result In Hex Format Example Description Debugger Address Parameter Formats Relative addresses are limited to 1MB 5 digits, regardless Offset RegistersRange of the closest offset register 162BugMD 1327CDI Port Numbers Calling System Utilities from User Programs Entering and Debugging ProgramsPreserving the Debugger Operating Environment Hardware Functions 162Bug Vector Table and Workspace Exception Vectors Used by 162Bug Exception Vectors Used by 162BugVector Exception 162Bug Facility Offset Using 162Bug Target Vector Table Creating a New Vector Table Buildx MOVEC.L VBR,A0 162Bug Generalized Exception Handler 162BugMD A7&30 Integer Data Types Floating Point SupportFloating Point Data Types Double Precision Real Single Precision RealExtended Precision Real Scientific Notation Packed Decimal Real Debugger Commands 162Bug Debugger Command Set 162Bug Debugger Command Set Norb Cnfg IM Configure Board Information Block Configure and Environment Commands ENV D Set Environment to Bug/Operating System ENV Parameter and Options Default Meaning of Default Table A-1. ENV Command Parameters Ffdffffc Nvram Memory Requirements section Base Address of Dynamic Memory Slave Ending Address #1 Master Starting Address #1 Master Starting Address #3 Table A-1. ENV Command Parameters Bits Register Address Configuring the IndustryPacks FFFBC016 First Second Controller Type Disk/Tape Controller Modules SupportedAddress Cisc Embedded Controllers -- 7 Devices Disk/Tape Controller Default ConfigurationsMVME320 -- 4 Devices Controller LUN Address Device LUN Device Type MVME327A -- 9 Devices MVME323 -- 4 Devices MVME350 -- 1 Device MVME328 -- 14 Devices IOT Command Parameters for Supported Floppy Types Disk/Tape Controller Data Controller Interface Type Network Controller Modules SupportedAddress Type Network Controller Data Numerics Symbols IN-2 IN-3 IN-4 IN-5 IN-6 Scsi LED Sysfail