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Emerson MVME147 manual Attach/Detach Packet all devices, Command, Controller, Device, Name, Notes

Models: MVME147

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SCSI Bus Reset Packet Command Table Phase Recover Buffer Data Packet Features TARGET Enable Custom Packet

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Emerson MVME147 manual Attach/Detach Packet all devices, Command, Controller, Device, Name, Notes

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Contents

Introduction FeaturesGENERAL INFORMATION Modes of Operation MVME147 SCSI Firmware Entry Points The SCSI firmware initializes these vectors Equipment Supported CONTROLLE DEVICE Devices Supported Under Common Command Set DOCUMENT TITLE Related DocumentationMOTOROLA PUBLICATION NUMBER Manual Terminology GENERAL INFORMATION CUSTOM SCSI PACKETS Initiator Role Custom Packet CUSTOM SCSI PACKETS Initiator Role Custom Packet Page PHASE CODE Initiator Role Custom Packet +$00 +$68 status Note ASYNC the firmware status xxxxxxxx xxxxxxxx Page CUSTOM SCSI PACKETS Initiator Role Custom Packet CUSTOM SCSI PACKETS TARGET Enable Custom Packet TARGET Enable Custom Packet NOTES Status from SCSI TARGET Enable Custom Packet TARGET Sequence Custom Packet TARGET Sequence Custom Packet CUSTOM SCSI PACKETS TARGET Sequence Custom Packet WORDS $04 and $06 CUSTOM SCSI PACKETS TARGET Sequence Custom Packet CUSTOM SCSI PACKETS RETRY COUNT. Not used by the TARGET role firmware CUSTOM SCSI PACKETS PACKET RETURN STATUS Packet Return StatusControl Flags SCSI The command was retried retry count times Bit 3 FM Filemark Bit 4 COMMAND RETRY1 = Retries were performed Bit 5 COMMAND RE Packet Return Status Bit 2 EOM End of media PACKET RETURN STATUS Codes Table 3-1.Packet Status CodesIntermediate Return MEANING Final Return Codes Table 3-2.Packet Status Codes cont’d SCSI Bus Reset Packet section in Chapter Request-Sense-Data Error-Class7 Codes Table 3-3.Packet Status Codes cont’dController-Dependent SCSI Status Returned in Status Phase Table 3-4.Packet Status Codes cont’d Request-Sense-Data Error-Class0 through 6 Codes Table 3-5.Packet Status Codes cont’dPage PACKET RETURN STATUS SCSI FIRMWARE INTERRUPT STRUCTURE SCSI Firmware Interrupt Structure SCSI FIRMWARE INTERRUPT STRUCTURE SCSI ACTV WRITING A DRIVERSCSI_CMD SCSI_INT Interface Rules for the SCSI Firmware Passing Commands to the SCSI FirmwareBuilding the Packet Figure 5-1.SCSI Disk Driver Interface to VERSAdos Interface Rules for Multiple Callers WRITING A DRIVER Care must be taken not to modify the contents of WRITING A DRIVER Interface Rules for the SCSI Firmware FUNNEL WRITING A DRIVER Interface Rules for the SCSI Firmware WRITING A DRIVER MOVE.W 2A2,D0 THE CODE BELOW HANDLES FINAL RETURN CODES Interface Rules for a Single Caller WRITING A DRIVER TARGET ROLE ROUTINES MVME147 SCSI Firmware Background SCSI Versus SASI Rules Custom Sequence Packet Command Table Script Enabling TARGET Role Enabling TARGET Role Servicing the TARGET Requests Servicing the TARGET Requests TARGET ROLE ROUTINES Servicing the TARGET Requests TARGET ROLE ROUTINES Servicing the TARGET Requests TARGET ROLE ROUTINES FUNCTION CODE SCSI PACKETSTable 7-1.SCSI Functions DESCRIPTION Read/Write Packet TableSCSI Functions cont’d DISK and TAPE Controller logical unit in SG table, if zero Old Packet Supported for Compatibility +$12 in SG table, if zero 1 = link to next entryFor example $5 is DMA Scatter/Gather Table Entry|function code 3 bits DMA MEMORY ADDRESS 32-BIT COMMAND COMMANDAttach/Detach Packet all devices CONTROLLER Attach/Detach Packet all devices SCSI PACKETS +$1E FM encoding, single Controller type refer xxxxxxxx attributes byte offset +$20 Single track density Drive type 0 = Example for floppy 3½, 5¼3½, 5¼, 250K B/S Data +$04 Minimum read QIC-24 if this is set to 0, the +$00 Reserved Interrupt level +$00 +$9E $00 Format Packet Assign Alternate Sector Packet SCSI +$0E Assign Alternate Sector Packet SCSI DEFECT LIST TYPE 0 Note 3, Head Bytes from Index MSW Note SCSI Bus Reset Packet Controller logical unit SCSI Controller Reset Packet Erase Packet +$12 Rewind Packet Device logical unit Read Block Limits Packet SCSI PACKETS where n = number of blocks or filemarks to Space Status from SCSI Write Filemarks Packet Write Filemarks PacketThe table below shows the write filemarks packet Controller logical unit Verify CRC Packet The controller must be in general or read mode Tape Mode Select/Sense Packet Tape Mode Select/Sense Packet Number of tracks on Inquiry Packet +$00 Reserved +$1A Load/Unload Packet +$14 Recover Buffer Data Packet +$0C Request Sense Data Packet Controller logical unit Check Status Packet Open Packet Open Packet SCSI PACKETS COMMON COMMAND SET AND DISK OPERATION BYTE OFFSETBYTE BYTE ENTRY NUMBER COMMON COMMAND SET AND DISK OPERATION Send mode select command COMMON COMMAND SET AND DISK OPERATION DEFECT LIST DEFECT LIST TYPEFORMAT BITS Mode Select Header Block Descriptor COMMON COMMAND SET AND DISK OPERATION BYTE OFFSET Block Descriptor BYTE OFFSETMode Select Header BYTE OFFSET NOTES BYTE OFFSETBYTE OFFSET VALUE VALUE Mode Select Command CDBBYTE OFFSET COMMENTS Mode Select Header COMMON COMMAND SET AND DISK OPERATIONBYTE OFFSET Block Descriptor BYTE OFFSET BYTE OFFSETPage code COMMON COMMAND SET AND DISK OPERATION TYPE ATTRIBUTE FLAGSMEDIA ALL SECTORS MEDIA COMMON COMMAND SET AND DISK OPERATIONATTRIBUTE FLAGS TYPE NOTES Pin 2 and Pin 34 Definition for Low Density PIN 34 CONTROLPin 2 and Pin 34 Definition for High Density PIN 2 CONTROL COMMENTS A-22

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