Source: Wikipedia. Pages: 122. Chapters: MVS, Extended Binary Coded Decimal Interchange Code, Z/OS, OS/390, Direct access storage device, VSE, Transaction Processing Facility, Multiprogramming with a Variable number of Tasks, Abnormal end, BOS/360, Conversational Monitor System, Michigan Terminal System, TOS/360, MTS system architecture, History of IBM mainframe operating systems, History of CP/CMS, OS/360 and successors, REXX, CICS, IBM mainframe utility programs, Job Control Language, Linux on zSeries, IBM CP-40, WebSphere Optimized Local Adapters, VM, Input/Output Control System, System Generation, IBM Information Management System, ORVYL and WYLBUR, OS/VS2, Unit Control Block, DOS/360 and successors, IEFBR14, MUSIC/SP, Virtual Storage Access Method, IUCV, Workload Manager, Job Entry Subsystem 2/3, ISPF, Data set, Input/Output Configuration Program, TSS/360, OpenSolaris for System z, BatchPipes, WebSphere Application Server for z/OS, IBM System Management Facilities, Time Sharing Option, Virtual Telecommunications Access Method, SMF 120.9, OS/VS1, STXIT, University of Michigan Executive System, IBM Airline Control Program, Houston Automatic Spooling Priority, Dynamic Logical Partitioning, HiperDispatch, Volume table of contents, Supervisor Call instruction, IBM Advanced Function Printing, Resource Measurement Facility, SDSF, CLIST, Global Resource Serialization, UNIX System Services, GM-NAA I/O, ZFS, Basic direct access method, Basic partitioned access method, Basic telecommunications access method, Z/VM, Resource Access Control Facility, Data Control Block, ALCS transaction monitor, Queued sequential access method, Group Control System(VM), SMP/E, Intelligent Resource Director, Queued Telecommunications Access Method, IBM Power, Basic sequential access method, IBM Software Configuration and Library Manager, Mainframe sort merge, Storage block, Terminal Productivity Executive, IBM XCF, CMS EXEC, EXEC 2, IBM OMEGAMON, Prefixed Save Area, IBM Cross System Product, Object access method, CP-67, Job entry control language, VM-CP, CP-370, IBM Cross System Coupling Facility, IBM Aggregate Backup And Recovery System, Access register, Table Producing Language, Job stream, IBM Multiple console support, ISRLEMX. Excerpt: MTS System Architecture describes the software organization of the Michigan Terminal System, a time-sharing computer operating system in use from 1967 to 1999 on IBM S/360-67, IBM System/370, and compatible computers. UMMPS, the supervisor, has complete control of the hardware and manages a collection of job programs. One of the job programs is MTS, the job program with which most users interact. MTS operates as a collection of command language subsystems (CLSs). One of the CLSs allows for the execution of user programs. MTS provides a collection of system subroutines that are available to CLSs, user programs, and MTS itself. Among other things these system subroutines provide standard access to Device Support Routines (DSRs), the components that perform device dependent input/output. The system is organized as a set of independent components with well-defined interfaces between them. This idea is, of course, neither new nor unique; but MTS components are generally larger, interfaces between components more rigid, and a component communicates with fewer other components than in many systems. As a result, components are more independent of each other and it is easier to replace one component without affecting others. The interfa...