Motorola MPMC101 Single-ended, Single-threaded, Synchronous transmission, Target, Wide Scsi, Word

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Glossary

SCSI ID

A unique number (0-15) that identiﬁes each device on the SCSI bus. Also referred to as the host name.

single-ended

Refers to the electrical conﬁguration of the signals used on the SCSI bus. A single conductor with a common ground is used to transfer a signal. This conﬁguration should only be used over short distances up to 6 meters. Longer distances require the use of a differential conﬁguration.

single-threaded

Only one program can be running on the computer at any given time.

synchronous transmission

A data transmission scheme in which ﬁxed time intervals are used to transmit data across the SCSI bus. As opposed to asynchronous transmissions, the acknowledgments are used for error checking only.

target

A SCSI device that performs operations in response to a request from an initiator, usually the host computer.

wide SCSI

A 68-conductor SCSI-2 bus with 16-bit communications that can have up to 16 SCSI devices attached. Narrow (50 conductor) and wide devices can be intermixed on the same bus.

word

A two-byte (16-bit) unit of data.

workstation

A networked computer typically reserved for end-user applications.

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Contents PMC SCSI-2 Adapter User’s Manual MPMC101Restricted Rights Legend Preface Related Documentation Acronyms and Terminology Conventions Safety Summary Safety Depends On You Page Contents List of Figures List of Tables Xii PCI SCSI-2 Adapter Adapter OverviewProduct Features System Requirements Supported Software DriversPCI Overview Single Initiator, Single Target Systems Introduction to SCSI-2Target with Multiple Peripherals Multiple Device Conﬁguration Introduction Tools Required OverviewUnpacking the Adapter Installing the PCI SCSI-2 Adapter Desktop PCI Slot Conﬁguration Single-ended PCI Adapter Jumper Setting PCI SCSI-2 Adapter Jumper SettingsInserting the PCI Adapter Card Adapter Card Installed to Chassis Differential PMC SCSI-2 Adapter Installing the PMC SCSI-2 AdapterInstalling the PMC Adapter Installing the PMC SCSI-2 Adapter JA4 PMC SCSI-2 Adapter Jumper SettingsDifferential Connecting to the Scsi BusConnector and Cable Requirements Single-ended10. Scsi Connector Port AIX Operating Systems Software Driver InstallationWindows NT Operating Systems Windows NT SetupScsi Adapter Setup Setup Message Installed Adapter Listing Restart Message Problem Possible Solution Computer will Start-up ProblemsStart-up Bootup Problems Boot-upPCI and PMC Adapter Application ProblemsPCI and PMC Adapter Problem ApplicationsUser Notes Table A-1. PCI and PMC Adapter Speciﬁcations HardwareSpeciÞcation Table A-2. Environmental Speciﬁcations Connectors and CablesTable A-3. Connector and Cable Requirements EnvironmentScsi P Cable Contact Assignments Connector Cable Signal Contact Conductor Name NumberTable A-4. Single-ended Contact Assignments Table A-5. Differential Contact Assignments Ansi American National Standards Institute Bus Device ResetCCB Command Control Block AdapterCPU Central Processing Unit CCS Command Control SetCDB Command Descriptor Block DMA Direct Memory AccessEncode DriverEIA Electronic Industries Association Eisa Expanded Industry Standard Architecture Interoperability Host name Ieee Institute of Electrical and Electronic Engineers InitiatorLU Logical Unit LocalLocal bus LogPoint-to-point Propagation delayRAM Random Access Memory PCI Peripheral Component InterconnectTarget Single-endedSingle-threaded Synchronous transmissionPage Index PCI IN-11