GTE Omni Si Database Technical Practices Issue 1 Manual
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TL-130500-1001 The input to the INCKS card is frequency-synchronized and can be selected manually by the Advance Sync button on the FB-20922-A card (Figure 4.11). Pushing the button selects the next highest SINX input from the one in which the clock card is currently locked. One of the four SINX channels can also be selected by writing onto the data base. A bad input cannot be selected by programming. The card will always automatically release its frequency synchronization mechanism from a faulty SINX input and lock onto the next available good SINX output. 8187CABLE CONNECTORS r- ,FB-20922-A ADV SYNC FB-20922-A NETWORK CLOCK CARD HANDLEYELLOW INDICATOR LAMPS ADVANCE SYNCHRONIZATION PUSHBUTTON FOR MANUAL MASTER COCK SELECTION /CRYSTAL ADJUSTMENACCESS POINT / Figure 4.11INCKS Card Handle View S-83
TL-130500-1001 Tones and Tone4.7 Table 4.3 defines the digitally generated tones supplied Generationby the OMNI SI. These tones are used in the normal operation of various features. Memory Page Card4.8 The selector switch (Figure 4.12) on the Memory Page card MPG16(FB-17213-BOA) is for manual selection of the memory data page.S-84 8187SVR 5210
TL-130500-1001 Table 4.3Tones and Tone Generation SVR 5210S-85
TL-130500-1001 Table 4.3Tones and Tone Generation (Continued)*Level of tones at the point of departure from the system 8187SVR 5210
SVR 5210TL-130500-1001THUMBWHEEL 0DATAPAGEFB : (7DO2I I; Tf2 :i3101511 12E9 13 1416715D6THUMBWHEEL D7Figure 4.12 Memor; Page Card CAUTION For normal service operations, thumbwheel must be set at 2. Mass Storage4.9 This paragraph describes the mass storage for the system’s software. Disk Subsystem4.9.1 The OMNI SI uses the disk subsystem for system loading, data base back-up, and loading of recent change overlay programs. The hard disk (Figure 4.13) stores program and data images associated with the voice system processor and program and data base images for the data system. 8187S-87
TL-130500-1001 NOTE: See section 6.0 for information on the disk subsystem for a system containing the PD-200 data option. In addition, the hard disk contains the Recent-Change and off-line maintenance programs which are paged into memory for execution. The system uses a 1 O-megabyte, Winchester-type 5-l 14 inch hard disk drive with or without the data option. The floppy disk (Figure 4.13) is a 5-l/4 inch industry standard. The floppy disk has a capacity of one million bytes of unformatted information and will store over 650,000 bytes of formatted information. The floppy disk provides distribution and back-up media for the system, and loads (initialize) the system during startup. The FMSD (File Management System Data) card provides the interface between the voice systems microprocesser system and the DDC (Disk Drive Controller) (Figure 4.13). The FMSD card, located in the Get Started File, slot 7, controls the mass storage device of the system. The FMSD card interfaces the voice switch via the CEC (Common Equipment Complex) processor bus. NOTE: See paragraph 8.2 for description of the PD-200 Data System access to mass storage. S-888187SVR 5210
SW 5210TL-130500-1001 r---------i r---------i I 4 y I I I II NSDC 11 Ir---------------------------I I I IIFILE MANAGEMENT SYSTEM CARD DATA FILE MANAGEMENT SYSTEM CARD DATAMAINTENANCE MAINTENANCEITTY TTYIII ,IIII8085 pptctcROMIr-lCE”IT1 cl-42kbIMkb iiAL---------,L-----;-----,---------- --__ r SASI BUS (See Note)4-b; (IED0.8 ME FLOPPY DISK DISK DHIVE CONIHOLLER , Figure 4.13Simplified Disk System Interface 8187S-89
-TL-130500-1001 VOICE FILESYSTEMr----------- Figure 4.14FMSD and Hard Disk Assembly Interface File Management4.9.2 Random access to files can be supported with disk Systemstorage. The FMS (File Management System) software manages all data storage and transfer on the system disks. Simultaneous access to a single file, along with multiple open files, is possible. Opening a file causes a FID (File Identity) to be associated with that file. FMS calls use the FID to identify the file being accessed. A high-level command set accesses the mass storage disk system. The command set is configured as an FCB (File Control Block). In executing an FMS command, the system processor constructs an FCB in its memory and informs FMS of the location of the FCB. s-90FMS commands are divided into the following categories: . FILE ACCESS - Create - Open (supports 20 files simultaneously) - Close - Seize - Release - Boot o DATA TRANSFER - Read - Write - COPY- Seek a ADMINISTRATION AND MAINTENANCE - Format - Diagnostic - Configuration - Time - Mount - Dismount 8187SVR 5210
SVR 5210TL-130500-1001 . DIRECTORY MAINTENANCE- Delete - Rename - Security (supports two levels - read and write) File AccessThis paragraph provides a description of the various system Commandcommands. Descriptionsl Create Command. The Create command can add a new file to the disk with the attributes and name given in the command. With completion of the command, the file opens for the access method specified in the FCB. l Open Command. The Open command can open a disk file for read, write, or update access. Once opened, the user can access records in the file. The file remains accessible until the Close command is used. l Close Command. The Close command can terminate access to a disk file. Optionally, the FID associated with the file can be freed for use by other requests. If the user wants guaranteed access to another file after closing this file, the FID should be kept and used in the next open file. If released, the FID is free for another task . l Seize Command. The Seize command can reserve a specified number of FlDs required for a task. This command helps avoid deadlock by allowing a task to allocate all the FlDsrequired to complete a task. 0 Release Command. The Release command can free up FlDswhich were previously seized. This command makes the FlDsavailable for use in other tasks. * Boot Command. The Boot command can open the file “FMS$BOOTR” for reading. This command, used by the system ROM program, loads the Smart Loader Program. The Smart Loader Program then loads the system generic program. Data TransferThis paragraph provides a description of the various system Commanddata transfer commands. Descriptions 0 Read Command. The Read command requests a specified number of records to be transferred from an open file to the user’s buffer area. o Write Command. The Write command requests transfer of a specified number of data records from the user’s buffer area into a file starting at the current record. * Copy Command. The Copy command allows record transfer between two open files. The records are moved only within FMSD. 8187s-91
TL-130500-10018 Seek Command. The Seek command allows the CRP (Current Record Pointer) of an open file to be repositioned at the requested record. DirectoryThis paragraph provides a description of the various system Maintenancemaintenance commands. Command DescriptionsQ Delete Command. The Delete command deletes a file from the disk by removing its entry in the Disk File Directory and deallocating the storage used by the file. * Rename Command. The Rename command can change the name of a disk file. 0 Security Command. The Security command can change the read/write security levels of a file. NOTE: FMS commands that concern the PD-200 Data System are described in paragraph 8.2.3. Disk Files4.9.3 Files make up the contents of the disk. Disk files are subdivided into records.Sectors are used to hold the file’s data and are called file data blocks. Depending upon the record size, many records may be stored in one sector, or one record may use two sectors. Sectors on the disk are identified by a DBA (Disk Block Address). DBAs range from 0 to N, where N is the number of sectors on the disk drive-l. The DBA can be calculated by using a formula dependent on the physical characteristics of the drive. Usually, FMSD will only deal with the logical DBA and leave the composition of the DBA to the DDC (Disk Drive Controller). (Refer to Figure 4.15 to calculate the DBA.) The disk file structure shown in Figure 4.16 is typical. The maximum amount of files is 320. (A summary of the disk file organization operating under FMS is shown in Figure 4.17). ___--= (cyl-addr head-per-cyl head-addr) * set-per-trk + set-addr I LDBA mnemonics = cyl-addr = cylinder address head-per-cyl = heads per cylinder head-addr = head address set-per-trk = sectors per track set-addr = sector address Figure 4.15 DBA Calculation 8187SVR 5210 s-92