96769450 &l t::\ CONTI\.
REVISION RECORD REVISION A (l/77) B (10/77) DESCRIPTION Manual released. To reflect ITOS 1.1 chan~es. Publication No, 96769450 REVISION LETTERS I. 0, Q AND X ARE NOT. USED ~ 1977 by Control Data Corporation Printed in the United States of America ii Address comments concerning this manual to: Control Data Corporation Publications and Graphics Division 4455 Eastgate Mall LaJolla, California 92037 or use Comment Sheet in the back or this manual. .
LIST OF EFFECTIVE PAGES New features, as well as changes, deletions, and additions to information in this manual, are indicated by bars in the margins o~ by a dot near the page number if the entire page is affected. A bar by the page number indicates pagination rather than content has changed.
PREFACE iP The manual lists the diagnostic messages for the CDC@ Mass Storage Operating System (MSOS) Version 5 and the major systems operating under it. This manual is directed at the CYBER 18/1700 MSOS Version 5 programmer and assumes a basic knowledge of the system.
CONTENTS ) E!WMMijW'; 1. 2. INTRODUCTION SYSTEM INITIALIZER ERROR CODES System Initializer System Initializer System Initializer System Initializer Error Recovery Codes Loader Errors Disk Error Messages Device Failure Codes GENERAL SYSTEM ERRORS Miscellaneous Loader Error File Manager File Manager 4. General System Errors Codes Codes Request Errors RECOVERY PROCEDURES SYSCOP SCMM Operator-SCMM Interface Error Messages Engineering Log ODEBUG Brea.
1832-5 Cassette Tape Driver and 1861 Magnetic Tape Transport (Module FS2CAS Present) 1833-1/2/3 Storage Module Drive and 1867 Drive Unit 1833-4 Cartridge Disk 1833-5 Flexible Disk Drive and 1865 Disk Drive 1843-1 Communications Line Adapter 1843-2 Communications Line Adapter 1860 LCTT/Formatter I I I 361-1 and 361-4 Communications Adapter (Even Channel) 361-4 Communications Adapter (Odd Channel) 364-4 Communications Multiplexer Pseudo Tape COSY Driver Pseudo Disk Magnetic Tape Simulator 1500 Equipment 15
1 INTRODUCTION ib6tk,·M4W• •L >tWr" This manual lists the diagnostic messages that may be returned to the operator (usually on the comment device) by Mass. Storage Operating System (MSOS) Version 5 and the major systems operating under it.
TABLE 1-1. MANUAL FORMAT (Contd) Section (4 Contd) Ca tegory /System Comments Online debug (ODEBUG) Aids the programmer in checking out his program Breakpoint Aids the programmer in checking out his program Recovery Allows the user to find the system state at the end of an online job execution. Abort dumps Snap dump Section (5 Contd) Category/System TRACE ASSEM FTN Allows the user to save part of all of the main memory following an abort stop.
SYSTEM INITIALIZER ERROR CODES 2 hS This section contains messages encountered when errors occur during initialization. Five subsections are included: • Initializer error codes. These are all errors that are neither loader nor disk hardware related. • Initializer loader error codes. These are related directly to problems the loader encounters. • System disk error messages. These are related to address and test data on disk writing.
Significance Where: nn is the initializer logical unit that has failed. is the failure code. LOADER ERROR 3 Out-of-order input block xx LOADER ERROR 4 Illegal data or common declaration yyyy is the last hardware status of the failed device.
Problem Job processor function partially Problem When certain functions of the job processor are not working, it may be a system problem, or the construction of the system library may not correspond to the order in the *y and *YM statements. No autoload after successful initialization The cause may be an improperly constructed interrupt trap or priority structure or a missing driver. Initializer terminates input or output One of the following: 96769450 A o The requested device is not turned on.
GENERAL SYSTEM ERRORS This section contains messages encountered by the general system operating in foreground or background mode. Diagnostic messages generated only in the background mode are found either in section 4, Recovery Procedures, or in section 5, Job Processor and Utilities (i.e., background, programs). Input/output diagnostics, though they may occur in any mode, are treated separately in section 6. Message .
LOADER ERROR CODES Message E1 Irrecoverable input/output error; terminates load E2 Overflow of entry/external table reservation on mass storage; terminates load E3 Illegal or out-of-order input block; terminates load E4 Incorrect common or data block storage reservation.
Bit Significance • Bit 5 is set for RTVIDX if the record does not exist or the request is repeated after the end of the link is reached. 11 File already defined/not defined as indexed 12 Key length not one for indexed-ordered file • Bit 4 is set for STOIDX if the file has not been defined as linked. 13 Unprotected file request attempt to change a protected file • Bit 2 is set for STOSEQ/STOIDX.
RECOVERY PROCEDURES 4 w The recovery procedures are special programs to aid the user in recovering from a system malfunction or stop and to aid him in checking out programs. • Control messages (C): System checkout gives messages to control the operation of SYSCOP. Control messages appear on the list device unless operator intervention is required. In this case, the control message and its associated input are entered via the comment device.
Message/Significance ~ E ~ Message/Significance . ADDRESS IN aa WAS ffff BUT SHOULD BE iiii is the starting address of a block of allocatable core jjjj is the length of the block plus the two preceding control words (that specify length of block and starting address). If the length does not match the length in a directory entry, XXXX appears on the listing. kkkk is the thread to next empty block or next word iiii Significance: LOCORE communication address error.
Type S iVl essliI?e/Sign ificance ENTRY FOR LVL hhhh INITIALLY iiii CHANGED TO jjjj INDEX hhhh HAS INVALID REQ PRI iiii iiii is the value on autoload image Significance: Request priority error Inesslll~e. This message is printed for allocatable cor~ programs. The only program permitted to have a request priority below 3 is the job processor. Ordinals for these modules arc verified and all other programs mw;t be at a request priority level of 4 or above.
Type S Message/Significance JP LOCKED OUT FOR UBEDT OR RECOVERY. SIGN OFF REQUESTED OF LIBEDT OR RECOVER Y. Significance: This support message gives the job processor lockout switch status. If SWTCH in TRVEC is negative, only the first sentence appears. If positive, only the second sentence appears. This indicates the job processor is ei ther locked out or the LIBEDT or the recovery program has requested a sign off. If SWTCH is 0, the message does not appear.
Message/Significance ~ has INVINT as its response routine, yet an interrupt has occurred. E Where: E ii is the line number tttt is the location specified in the appropria te trap Where: Significance: This error message indicates unpatched interrupt response routines.
Message/Significance read/write capability specified for the primary device. E LU uu IS SHARED BUT UNMATCHED ***MASK TABLE ERROR INITIALLY Significance: Header message indicates that an error was detected in the autoload image mask table. Where: aa is the assigned alternate logical unit for logical unit uu E Message/Significance ~ S Significance: This error message indicates inconsistently shared devices.
Message/Significance NO VALID PHYSTB FOR LU uu Significance: This error message indicates that the particular LOGlA entry does not point to a core location that contains a scheduler request code (52xx16) followed by three cells, none of which is unpatched. The message appears for each error. S S PENDING INPUT REQUEST FOR JP Significance: Manual interrupt handling support message. The MIB flag was set, and input is for the job processor.
Message/Significance Message/Significance iiii E SBI IS NOT A is the last location to call complete request; should be in a driver READl DEVICE {WRITJ E C SELECT OPTION Type option: *Z Checkout package released SBI - o Control transferred to dump routine I Print error messages only. 2 Print error messages and support messages associated with detected errors. Print error messages and all support messages. Significance: This control message indicates operator selection of the message option.
J S SCMM Message/Significance ~ SYSTEM NOT SWAPPED Significance: This support message appears if SWAPON is not set but SPASW is set. The Small Computer Maintenance Monitor (SCMM) provides a method of online hardware error detection for 1700 Computer Systems. SCMM consists of a main program and one test program for each input/output device to be tested. The main program is loaded into the operating system as a system ordinal and the tests are placed in the program library.
Message Significance NOT IN LIBRARY The test required is not in the program library. t PROGRAM NOT SCHEDULED PROGRAM SCHEDULED Message CHNLxxxx VALUE TOO+ Deviation is >+7. The operator requested a control statement (STP, PRM, NPT, or PRT) for a test that had not been set into execution. t CHNLxxxx VALUE TOO- Deviation is <-7. Histogram See SCMM reference manual for use. The program requested by the operator is already in operation.
Significance Message READER NOT READY SEQ ERROR STACKER FULL/ JAM TIME OUT 1706 ADDRESS 'ERROR Busy signal not dropped Card out of sequence Stacker full or card jam No interrupt within allotted time Buffer address wrong The following message occurs without the usual preface: TST 405 DATA ERROR COL xxxx ACTUAL yyyy EXPECTED zzzz Card column xxxx failed the verification test Digital I/O, logical level (1553-x/1544-x) SCMLLV TEST aa RUN bb 15 cc CHNL dd STATUS ERROR eeee Test error message Where: aa bb c
Message Significance Disk (1738/853 and 854, 1733-1/853 and 854) TSTDKI COMP ERR TOTAL xxxx TSTDKI SEC ADDR ERROR Hardware error messages have this preamble: Number of errors found after full block of test data is written to disk and verified by rereading to core Operator attempted to test system area of disk or nonexistent disk tracks Preamble and trailer have the same meanings as in the compare message above.
Significance Message The messages are: CHKWRD ERR Significance Message Line printer (1740/501. 1742-1, 1742-30.
Message NOT READY Significance Drive not connected or controller not ready PARITY PE LOST DATA (616) Parity errors PE WARNING (616) WRONG POSTAMBLE (615) Postamble not 1 byte of Is fol lowed by 40 bytes of Os Message Significance Paper tape punch (1713, 1722, 1723, 1778) The messages are the same as the for paper tape reader, except the unit identification is TSTPTP and TAPE SUPPL Y LOW is used instead of MOTION FAILURE and VALIDATION ERROR is used instead of CHECKSUM ERROR.
Message Significance error code as shown in section 6; T is the time, and zzzz is the status word. ENGINEERING FILE INFORMATION LISTING 1. In response to MI, then LOGICAL UNIT xx 2. In response to MI, then EFLU: the failure codes for the logic units specified DATE aa name TIME hhmm:ss F AlLURE CODE bb EF: all failure codes for all logic units 3.
Message Significance B02, hhhh The specified hexadecimal address hhhh cannot be processed by the breakpoint program because it is protected. B03, hhhh The breakpoint limit is exceeded. The specified hexadecimal address is the last breakpoint processed.
JOB PROCESSOR AND UTILITIES The job processor acts as executive for almost all background programs.
SKED Message The skeleton editor (SKED) consists of requests to the installation file builder (LIBILD) that specify the order of the binary programs that will ultimately become one of the MSOS libraries. Message Significance COMMAND NAME NOT UNIQUE Not enough letters are included to uniquely define the command. ERROR IN COMMAND FORMAT A comma, omitted. INVALID CHARACTER IN NUMBER A nondecimal character is specified in the number argument. argument, etc.
Message Significance NO DEFINITIONS WERE SUCCESSFULLY LOADED. TOO MANY DEFINITION SETS. IGNORED. Message Significance L06 The illegal field in the control statement was presented to the library editing program, or and input/output was attempted on a protected device. L07 Errors in loading resulted from a library editing program control statement. LOS A program to be added to the program library has an entry point duplicating one already in the directory.
Message LlBMAC The following error codes are output by the macro library generator (LIBMAC). The format is: Action: Reads revisions and lists them with asterisks in columns 1 through 4 until it reads a DCK/, MRG/, CPY/, or END/ card. LIBMAC ERROR nn ••• Where nn is one of the following codes: Significance/COSY Action 02 Illegal parameters on MRG/control card. COSY aborts. 03 First card from merge input is not a DCK/control card.
Message 13 14 Significance/COSY Action DEL/ or INS/ card contains sequence number beyond the end of the input deck. Message Significance/COSY Action L,lu FAILED ec COSY driver errors are output by the alternate device handler. All errors are catastrophic. Action: Reads revisions and lists them with asterisks in columns 1 through 4 until it reads a DCK/, MRG/, or END/ card. Action: For protected requests, type CU. For unprotected requests, type DU.
?ispatcher, or calls to find addresses to table of presets), but It can recommence at the completion address of a monitor request.
Message Significance **pp There was an error in the previous pass of the compilation assembly. See the output page immediately preceding the first page of the listing for the pass 1 or pass 2 error message. Where: megal relocation, either: **RL • Violation of relocation • Violation of an instruction rule that requires the expression value to be either absolute or have no forward referencing of symbolic operands. Sequence error; tags instructions with sequence numbers that are out of order.
Significance Message Significance 35 This line, which begins a statement, has other than zero or blank in column 6; blank is assumed. 36 Too many labeled common blocks are declared; continuation of the last declared block is assumed. 37 The name in this COMMON statement is either a formal argument or defined in a previous COMMON statement. The name is ignored. 38 The name is specified as two different types. This specification is ignored.
Message Significance 80 Subroutine argument table overflow caused by a large number of declared parameters and unique references to these parameters. 81 This formal argument was previously specified as another formal argument or the subprogram name. 82 Too many formal arguments caused a compiler table overflow. 83 The above name is not a variable or an array element. 84 Two elements of the same array or common block are assigned to the same storage unit.
Message Significance 113 The maximum number of macros overflowed; this macro definition is ignored. 114 This macro was previously defined; the new definition is ignored. 115 Call to an undefined macro. 116 Embedded macros are illegal. Message Significance Where: xx is the decimal unit number of a device used improperly 7 I/O RQST statement no. xx A write was attempted on magnetic tape with no write enable. To continue, press RETURN.
Message Significance/Action/Result • 16 I/O RQST statement n'o. xx The sector address is too large; the starting sector address or ending address exceeds 215 -1. Program terminates. Magnetic tape editing (SETPV 4) provides the capability to build and maintain installation files. The MSOS reference manual describes the SETPV 4 command set. • Disk/tape utility (DSKTAP via DTLP). The DSKTAP program is loaded under the job processor using DTLP.
Message Significance nnnnn MODE DIFFERENT ON MAG TAPE 0 through 32,767; the remainder obtained by dividing the total number of records by 32,768. One or more records on magnetic tape contain the same information as the record being verified against but of a different mode. UT FORMAT INCORRECT The request is not correctly formatted; parameters and/or delimiters are incorrect. UT INVALID REQUEST The mnemonic request code is illegal. DSKTAP/DTLP The DTLP loader function has no diagnostic messages.
Message Significance/Action Action: Carriage return implies do not use. U implies use, ignoring expiration date. 10 ERRORS *CONTINUE: Serious Error Messages Message ****SOOO**** Verify function has located 10 consecutive records that contain errors. Action. Type carriage return to terminate or type one character followed by carriage return to continue. ****S001**** Data buffer linkage has been destroyed. Cause: input/output malfunction, CPU malfunction Action: Reload utility.
Message Significance/ Action Message ****S009**** The labeled file is missing end-of-file trailer labels. xxxW002xxx The end-of-tape is sensed on the output file (unlabeled). xxxW003xxx Action: Close the file with end-of-volume and reopen after mounting the new tape. Re-enter the function to complete processing. ****S011**** A double file mark has been sensed on an input file. Processing is terminated. Action: Close the input file and mount next volume. Re-enter the function to complete processing.
Message Significance Message Significance 0910 One of the hexadecimal parameters of the last read !'equest record is not a hexadecimal digit. 0130 1010 Illegal diskette format; the format (IBM or CDC) of a diskette to be read or written does not agree with the last *F request record (if there is no *F record, CDC format is assumed). This error should only occur if a diskette is inserted to be read or written without first being initialized by the FDDUTY program.
Message Significance Message 7 = Fixed tables contain the incorrect edit phase (SMCEDT) size; fatal error SEQ DIR ERROR Sort-only run. Sequence directory read/write error; run aborted. No operator action. 8 = Fixed tables contain the incorrect sort phase (SMCSRT) size; fatal error SEQUENCE ERROR Latest record should have preceded previous record in key merging. Action: Operator may direct the program to delete the record or to continue with or without operator interaction for this type of error.
9 = Call to intermediate merge (SMCIMG) unjustified since all remaining strings can be merged by final merge (SMCFMG) GETFCB REQIND = $xxxx Status word for GETFCB operation which failed GETS REQIND = $xxxx Status word for GETS operation when GETS failed INTERPHASE RECORD COUNTS DISAGREE Number of output records does not equal number of input sort records INPUT FILE LENGTHS ARE NOT EQUAL Cannot sort files with unequal record length KEY FIELD EXTENDS BEYOND END OF RECORD Key specified is too long fo
TEXT EDITOR Using its own two files (work file and user file), text editor can build files or alter any job processor files. The editor can operate on any file read into its own file sp~ce. The following diagnostic messages can appear durmg those commands shown: Message Significance/Command DISK READ ERROR The work file and scratch file are kept on disk; each line is read as a separate record. A disk read or write error may occur during any read operation.
INPUT/OUTPUT STATEMENTS Three types of input/output equipment diagnostics are provided.
I Device Failure Code and Error 2 Alarm (contd) Device Failure Code and Error Significance/ Action Line printer: paper out, paper tear, fuse alarm, or interlock open. Correct the problem and use the RP option. 4 Checksum 1729-2 Card Reader: interlock open. Correct the problem and take the RP option. Significance/ Action FREAD binary: The sum of the header word and data in a record did not balance to zero when added to the checksum word. Card readers: The holes are not cleanly punched.
Device Failure Code and Error 7 Compare Pre-read Significance Hardware problem: A compare error occurs when a faulty signal is detected in the area of the punch solenoid and echo amplifier circuits during an echo check. Device Failure Code and Error 12 7/9 punch 1728-430 Card Reader: Remove and discard the last card punched. Ready the device and type RP. • Card readers: Attempt recovery as for the card checksum error (see error code 4).
Device Failure Code and Error 18 Address (Contd) Significance advanced beyond the limits of file storage. Device Failure Code and Error 25 Card jam Magnetic tape simulator: an attempted read past end of written data Significance A card transport problem has occurred. It is possible for a card jam to occur in anyone or more of four read stations in the 1728 Card Reader.
Device Failure Code and Error Significance 27 Device message Illegal device message on 1720 Card Punch 28 File No file assigned to this logical unit (pseudo tape driver) 29 Read A read error occurred in reading the resident mass-storage driver. 30 Validation error The frame punched does not compare with the original data, or there was an echo error on the 1720-1 Card Punch. Abort the punch operation.
Device Failure Code and Error Device Failure Code and Error Significance 55 Status Bad status (an indeterminate error occurred on 1752) 56 Mass memory buffer expired No more buffer space is available (software buffer driver). 57 Buffer transfer A mass memory error on the buffer transfer, which is detected in the software buffer driver. 58 Not used 59 PE lost data An error occurred in the phase encode formatter that affected the data transfer.
SPECIAL MESSAGES Error Code The control units for the 1744, 1745, and 1747 equipments produce the following error messages. Error messages are on the comment device unless otherwise specified. Significance A Zero length request; not completed with error and not executed B Software cannot (treated as ghost).
In most cases, the word given may be obtained by a status request (WES code) to the device. In this case, the status word is returned in the A register. However, when the device has multiple status words (see the device hardware maintenance manua!), the status word shown here is the status word with the appropriate director code. If the driver generates a composite status word for ESTAT2, no status request loads the word given here into the A register.
Status Bits 4 Status Description Not used Status Bits 6=1 5=1 Alarm Indicates a paper motion failure, lost data, or reader power turned off 6=1 Lost data Indicates the data is not transferred to the computer before the next frame appears for reading. A lost data signal is generated to indicate a frame has been passed. Tape motion stops after the frame is read.
Status Bits Status Status Bits Description 3=1 Data The card reader is ready to transfer data to the computer. 4=1 End-ofoperation The last card column was read, or a reload memory function was sent. 5=1 Alarm The card reader has one or more of the following alarm conditions: Compare or preread error Stacker full or jammed Input tray empty in Fail to feed The card failed to feed.
Status Bits Status 6=1 Lost data Description Indicates data not transferred out of the holding register before the next column being read appeared. The status drops when a clear (0=1) is sent to the controller. Status Bits 7=1 Protected Data Indicates data transfer may occur. Reader data: The data hold register contains information ready for transfer to the computer.
1729-3 Card Reader/Controller Status Bits Status 1725-1 Card Punch Description 0=1 Ready The card reader is operational. 1=1 Busy The card reader is busy. 2=1 Interrupt Indicates interrupt response generated by card reader. Other status bits must be monitored to determine the cause of the interrupt. 3=1 Data Indicates data transfer may occur. Reader data: The data hold register contains information ready for transfer to the computer.
Status Bits Status Status Bits Description Status Description 5=1 Alarm 12=1 556 bpi The tape is set to 556 bpi. 6=1 Lost data 13=1 800 bpi The tape is set to 800 bpi. 7=1 Protected Indicates PROTECT PROGRAM switch is on 14=1 7-track 15=1 Write enable 8=1 Parity error A parity error is detected. 9=1 End-of-tape The end-of-tape sensed. 10=1 Loadpoint The load point is sensed. 11=1 File mark The file mark is sensed. 12=1 Controller active The controller is active.
1733-1/853/854 Disk Drive Contro lIer Status Bits 0=1 Description Status Ready • • • 2=1 3=1 4=1 6-14 Interrupt On cylinder End-ofoperation Alarm Description Indicates that one of the following abnormal conditions occurred: Not ready Check word error Lost data Seek error Address error Defective track Storage parity error Protect fault The disk pack is not in the drive unit The disk drive motor is not up to opera ting speed (2400 rpm). The read/write heads are not in the operating position.
Status Bits 10=1 11=1 12=1 13=1 14=1 15=1 Status Seek Error (Contd) Address error Defective track Storage parity error Protect fault Reserve Description The controller has been unable to obtain the sector record address selected during a write, read, compare, and checkword check operation. The bit is cleared by any function that sets the busy status bit. Status Bits 0=1 Status Ready (Contd) This computer has the controller reserved.
Status Bits 5=1 Status Alarm Description The alarm status bit indicates that one of the following abnormal conditions occurred: Not ready Check word error Lost data Seek error Address error Storage parity error Protect fault Any output function clears the bit. The not ready condition can be changed by manual intervention.
; Status Bits Status 14=1 Protect fault Description An unprotected controller operation attempts to read or write in a protected computer storage area. If the error is detected while receiving control information from storage, the operation ends immediately. If the error is detected while transferring data to or from storage, the operation ends at the end of sector being operated in.
Status Bits 7=1 Status Protected Description A selected drive unit is protected and may only be accessed by protected computer instructions. When bit 7 is set, it can be cleared by a protected director function that has the release bit set in A. 8=1 Check word error The controller logic has detected an incorrect checkword in data read from file storage during a read, compare, or checkword check operation. This bit is cleared by any output function.
Status Bits Status Description The busy status bit is cleared when the controller and/or drive unit has completed its operation or an abnormal condition is detected that aborts the operation. Once initiated, the computer cannot clear the busy condition. 4=1 Interrupt Status Bits Status 6=1 No compare (Contd) The bit is cleared by any output function.
Status Bits 11=1 12 13=1 Status Controller seek error (Contd) Description corrected by doing a status of the drive cylinder and comparing this with the cylinder register (to find out how many tracks and in what direction the positioning error is from the selected file address). The first load address function following a controller seek error moves the cartridge disk drive positioner without changing the cylinder register and can therefore correct the positioning error. The printer is operational.
Status Bits Status Description 1=1 Busy (Contd) motion also activates the printer. However, transfer of data to memory is allowed. 2=1 Interrupt The printer indicates an interrupt response. The other status bits determine the cause of the interrupt. 3=1 4=1 Data EOP The printer is ready to receive data. If an interrupt on data has been selected, the data status also indicates the interrupt has occurred. The printer has completed an operation. If the bit is 1, no operation is in progress.
Status Bits 1747 Data Set Controller Status Bits 0=1 Status Ready Description 1=1 Busy The busy status indicates that the data set controller is selected for a transmit or receive operation or is transmitting a response code. 2=1 Interrupt The interrupt status indicates an interrupt from the data set controller is active. It clears upon receipt of a clear interrupt or clear controller function code.
Status Bits Status 6=1 Lost data 7=1 Protected 8=1 Parity error Status Bits Description The controller PROTECT switch is on. Not used 10=1 Guarded address An attempt was made to write on a guarded address. 11=1 Timing track error Loss of drum timing pulses 1752 Drum Controller Status Bits Status 8=1 Checkword error A check word error occurred during drum read. 9=1 Protect fault An unprotected input/output instruction has attempted to access protected core.
Status Bits Status Description Status Bits Description Status 5=1 Alarm A lost data or parity error condition has occurred. 4=1 End-ofoperation (EOP) 6=1 Lost data The holding register contained data for transfer to the computer, and the teletypewriter/conversational display terminal began to send a new character. The read cycle is completed (81st column time). Bits 2 and 4 are cleared automatically by the start of the next read cycle.
Status Bits 5=1 Status Alarm Lost data 7=1 Not used 8=1 Pari ty error Description One of the following errors occurred: end-of-tape found, tape mark found, data error, inoperative during execution, .overload, program error, or read command after write without an intervening backspace command. Timeout or overload. On overload, the tape moves to the gap. Timeout includes the runaway tape error, written data not under the read head yet, and attempting to backspace at the beginning of tape.
Status Bits Status Description 13=1 Unit 0/1 1 = Unit 1 selected, o = Unit 0 selected 14=1 Data available Data available from read or echo operation ADT mode Auto data selected 15=1 transfer Status Bits Status 8=1 Protected The protect jumper is installed; the disk system is operating in the protected mode. 9=1 Lost data on DMA The transfer rate of communications adapter and drive exceeded the direct memory access ability to handle the data. The read or write operation was terminated.
TABLE 6-1.
Status Bits Status Status Bits Description • Director functions: Read. write. compare. check-word check, wri te address, sense-verify. • Wait for seek change. • Seek to device. Busy status is cleared upon completion of the command which caused the controller to become busy. Master clear or clear controller will also clear busy. 2=1 3=1 Interrupt Alarm EOP or alarm or alternate bus reg interrupt response is active. The bi t is reset by clear interrupts. master clear. or clear controller.
1833-5 'Flexible Disk Drive and 1865 Disk Drive Status Bits 0=1 1=1 2=1 3=1 4=1 5=1 Status Unit ready Unit busy Head loaded Seeking Description Status Bits Status 11=1 Seek error The disk is at running speed. The initial seek is to track O. The unit is busy with data transfer on the seek operation. The bit cleared bv the end-ofoperation, seek "error. operation aborted, or master clear. Reading/ writing The unit is transferring data or initializing.
Status Bits Status 1860 LCTT/Formatter Description 8=1 Carrier The carrier signal is detected on the link lines. 9=1 Clear-to-send The request-to-send is received; the modem sets the clear-tosend flag. 10=1 Ring indicator The ring signal is received from the modem. 11=1 Data set ready Data set modem 12=1 13=1 14=1 15=1 ready signal from Data not available The data request from the transmitter is not serviced in time; the fill character was sent instead of the data.
Status Bits 11=1 15=1 Status Character ready Terminal connected Description The character ready status sets when the holding register in the receive section contains a valid data character ready for transfer to the communication multiplexer. The input/output terminal is connected to the communications adapter (set by the driver). Status Bits 7=1 Status PROTECT switch status Description Indicates the PROTECT switch is in the protected position.
1500 EQUIPMENT 1501 High Level Analog Input Status Bits Status 0-3 Address code 4 Mode enabled 5 - 14 15 The present channel address is being used. 1 =sequential channel address channel address o = random o 1- 3 6-32 Busy Address code Address code of first mUltiplexer module with analog signal lost (if A bit 15=1) Signal lost The analog signal is lost. 15 The input occurred while incrementing.
COMMENT SHEET MANUAL TrrLE CDC® MSOS Version 5 Diagnostic Handbook PUBLICATION NO. _...::9:..:;:6;..:.7~6~9..:.;45=:.;O:::.-_ _ _ _ _ _ _ _ REVISION _ _B _ _ _ _ _ _ _ _ _ _ _ __ FROM NAME: ______________________________________________________________________ BUSINESS ADDRESS: ______________________________________________________________------ COMMENTS: This form is not intended to be used as an order blank. Your evaluation of this manual will be welcomed by Control Data Corporation.
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