Parallel Port Interface, Status Pins | Motorola MVME187 guide

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Board Level Hardware Description

Parallel Port Interface

The PCCchip2 provides an 8-bit bidirectional parallel port. This port may be used as a Centronics-compatible parallel printer port or as a general parallel I/O port.

All eight bits of the port must be either inputs or outputs (no individual bit selection).

In addition to the 8 bits of data, there are two control pins and five status pins.

When used as a parallel printer port, these pins function as follows:

Status Pins	Printer Acknowledge (ACK*)

	Printer Fault (FAULT*)

	Printer Busy (BSY)

	Printer Select (SELECT)

	Printer Paper Error (PE)

Control Pins	Printer Strobe (STROBE*)

	Input Prime (INP*)

Each of the status pins can generate an interrupt to the MPU in any of the following programmable conditions:

❏High level

❏Low level

❏High-to-low transition

❏Low-to-high transition

2-20

Image 44

Motorola MVME187 manual Parallel Port Interface, Status Pins, Control Pins

Contents

Risc Single Board Computer Installation Guide MVME187 Restricted Rights Legend Assembly Item Board Description Preface Safety Summary Safety Depends On You Copyright Motorola All Rights Reserved March Page Contents Page Page Page Page Page List of Figures List of Tables This Chapter Covers About this Manual Signal Name Conventions Data and Address Parameter Numeric Formats Big-Endian Byte Ordering Assertion and Negation ConventionsData and Address Size Deﬁnitions Bit Value Descriptions Control and Status Bit DeﬁnitionsTrue/False Bit State Deﬁnitions Motorola Description Publication Number Related DocumentationDocument Set for MVME187-0xxBoard Additional Manuals for this Board Other Applicable Motorola PublicationsSingle Board Computers Scsi Software UserÕs Manual Motorola Description Non-Motorola Peripheral Controllers Publications Bundle Part Number Description SBCCOMPS/L Applicable Non-Motorola Publications Document Title Source Introduction to the MVME187 Installation Guide Board Level Hardware Description General Description Onboard Memory Mezzanine Module Scsi Mass Storage Interface Serial Function Synchronous Signals Bit Rates Serial PortsParallel Printer Port Ethernet Transceiver Interface Features 187Bug Firmware Features Characteristics SpeciÞcations SpeciﬁcationsConformance to Requirements MVME187 General Speciﬁcations Adapters ConnectorsBoard Level Overview Transition Modules ASICs VMEchip2 Asic Bus TransfersPCCchip2 Asic Transfer type Can be Mcecc Memory Controller Asic Functional DescriptionMEMC040 Memory Controller Asic Front Panel Switches and LEDs Front Panel SwitchesSwitch Description Front Panel LEDs Local Bus Arbitration Data Bus StructureM88000 MPU Programmable Eprom Features Static RAM Optional Sram Battery Backup See Optional Sram Backup Power Source Select Header J6 on Onboard Dram Stacking Mezzanines Dram Programming Considerations Battery Backed Up RAM and Clock Serial Port Interface VMEbus InterfaceInterfaces Serial Interface Programming Considerations Parallel Port Interface Status PinsControl Pins Ethernet Interface Buffer Overruns Scsi Interface Programmable Tick Timers Watchdog TimerLocal Bus Timeout Local Resources Normal Address Range Devices Memory MapsLocal Bus Memory Map Address Software Devices Accessed Port Size Local Bus Memory MapRange Inhibit Address Range Devices Accessed Port Size Local I/O Devices Memory Map $FFFE000B Iack Level VMEbus Short I/O Memory Map VMEbus Accesses to the Local BusVMEbus Memory Map Hardware Preparation and Installation Unpacking the Equipment Overview of Startup Procedure Install your MVME187 in the chassisStartup Overview Stage What you will need to do Refer to Prepare the MVME187 Connect peripherals Complete the installationStage What you will need to do Refer to Package for Motorola 88K Option Modiﬁcation Modifying Conﬁguration before InstallationPreparing the Hardware MVME187 Switches, Headers, Connectors, Fuses, and LEDs Jumper Settings Checking the 187Bug EPROMsEprom Location Eprom Orientation Optional Jumper Settings General Purpose Software Readable Header J1 Factory Settings for J1 General Purpose Readable Jumpers Bit J1 Pins DescriptionJ1 Bit Descriptions Header ConÞguration Jumpers Number Description Settings for J2 System Controller Header System Controller Header J2 Optional Sram Backup Power Source Select Header J6 Serial Port 4 Clock Conﬁguration Select Headers J7 and J8 Primary source VMEbus Number Description Action Preparing the MVME187 for InstallationMVME187 Preparation Procedure Step Action Chassis Preparation/Slot Selection ProcedurePreparing the System Chassis MVME187 Installation Procedure Installing the HardwareInstalling the MVME187 in the Chassis Transition Modules and Adapter Boards Overview Typical Internal Scsi and Serial Port Connections Equipment Type Connect Through Equipment Connections10. Peripheral Connections Installing Transition Modules and Adapter Boards Connecting Peripherals 12. Peripheral Connection Procedures Action Refer to Using MVME712A/AM and MVME712B Typical Transition Module Peripheral Port Connectors Completing the Installation 13. Installation Completion ProcedureStarting the System 14. System Startup Overview Powering Up the System If 187Bug is Board ModeSystem Mode Initializing the Real-Time Clock Programming the PCCchip2 and VMEchip2 15. RTC Initialization ProcedureStep Action Board Mode System Mode Backplane Power Connections Global Bus TimeoutSystem Considerations Memory Address Ranges Ethernet LAN +12 Vdc Fuse Multiple Module Cage ConﬁgurationGcsr Location Monitor Register Scsi Bus Termination Storage and the Real-Time Clock Hardware Preparation and Installation Introduction to MVME187Bug Overview of M88000 Firmware Trap #496 Routines Command FacilitiesDescription of 187Bug Debugger or Diagnostic Directories Keyboard Control Comparison with M68000-Based Firmware 187Bug Implementation Booting and Restarting 187Bug Memory Requirements Starting Up 187Bug AutobootAutoboot Sequence ROMboot ROMboot Sequence Requirement Optionally, with the ENV command Network BootNetwork Boot Sequence Restarting the System Reset Abort Abort Sequence Break SYSFAIL* Assertion/Negation MPU Clock Speed Calculation Disk I/O Support Disk Support FacilitiesParameter Tables Supported Controllers Blocks Versus Sectors Device Probe Function Disk I/O via 187Bug Commands Disk I/O via 187Bug System Calls BH Bootstrap and HaltController Command Packets Default 187Bug Controller and Device Parameters Disk I/O Error Codes Using When you invoke one ChangeThese commands Status is Command BO or BH UDP/IP Protocol Modules Network I/O SupportIntel 82596 LAN Coprocessor Ethernet Driver Bootp Protocol Module Network Boot Control ModuleRARP/ARP Protocol Modules Tftp Protocol Module Multiprocessor Control Register Mpcr Method Network I/O Error CodesMultiprocessor Support Multiprocessor Address Register Mpar Mpcr Powerup SequenceMpcr Status Codes Multiprocessor Support Global Control and Status Register Gcsr Method Command Description PreÞx Diagnostic FacilitiesDiagnostic Monitor Commands/Preﬁxes Diagnostic Utilities Command Description Write loop enable Read loop enable 187Bug Diagnostic Test Groups Diagnostic Test Groups Debugger General Information Entering Debugger Command Lines Terminal Input/Output Control More characters to it. You can edit the line by Debugger Command Syntax Base IdentiÞer Examples Syntactic VariablesExpression as a Parameter Expression Result In Hex Address as a ParameterString Numeric Value Literal Address Formats Port Numbers Offset Registers Downloading an S-Record Object File Entering and Debugging ProgramsCreating a Program with the Assembler/Disassembler Calling System Utilities from User Programs Read the Program from Disk Preserving the Debugger Operating Environment 187Bug Vector Table and Workspace Floating Point Support Hardware FunctionsException Vectors Used by 187Bug CPU/MPU Registers Integer Data Types Floating Point Data Types Single Precision Real Double Precision Real Scientiﬁc Notation 187Bug Debugger Command Set Debugger Commands Cnfg I M CS range B H WENV D IOI C L Niot HA Zn aNopa port Nopf port RL addr B H W SYM addrTime C L O VER E Cnfg IM This Appendix CoversConﬁguring the Board Information Block Configure and Environment Commands Setting Environment to Bug/Operating System Table A-1. ENV Command Parameters ENV Parameter and Options Default Meaning of Default First location tested when the Bug LUN Network Auto Boot ConÞguration Memory Search Ending Address Slave address decoders setup Guide Base address of the VMEbus resource This will be the local bus address Table A-1. ENV Command Parameters Configure and Environment Commands Address Disk/Tape Controller Modules SupportedController Type First Second Disk/Tape Controller Default Conﬁgurations $XXXXXXXX MVME327A -- 9 Devices Controller LUN Address Device LUN Device Type IOT Command Parameters for Supported Floppy Types IOT Parameter Floppy Types and Formats Other Characteristics Disk/Tape Controller Data Table C-1. Network Controller Access Data Debugger Commands Debugger System CallsNetwork Controller Modules Supported Address Interface $FFFFA400 Table D-1. Troubleshooting Steps Condition Possible Try This Problem Troubleshooting the MVME187 Solving Startup Problems Table D-1. Troubleshooting Steps Return Set mmddyyhhmm ReturnEnvd Return De Return Env ReturnSt Return Troubleshooting the MVME187 Solving Startup Problems EEIA-232-D Interconnections Introduction Signal Name and Description Table E-1. EIA-232-D InterconnectionsPin Number Mnemonic Signal Name and Description Number Mnemonic Levels of Implementation Signal Adaptations Sample Conﬁgurations Figure 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 Bootp Default configurations B-2 IN-12 Local bus Local I/O devices 2-26VMEbus 2-28VMEbus short I/O IN-14 See also CD2401 scientific notation 5-14 Scon LED Nvram XON/XOFF