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ⓘ Transaction Management eXecutive or TMX was NCR Corporations proprietary transaction processing system running on NCR Tower 5000-series systems which were based ..




Transaction Management eXecutive
                                     

ⓘ Transaction Management eXecutive

Transaction Management eXecutive or TMX was NCR Corporations proprietary transaction processing system running on NCR Tower 5000-series systems which were based on Motorola 680xx CPUs. This system was used mainly by financial institutions in the 1980s and 1990s.

                                     

1. Features

Basic features of the TMX operating system are listed below:

  • It had limited memory several MB and disk several hundred MB.
  • It contained SNA LU emulations for mainframe connectivity.
  • Files had various types, like text files and index sequential data files.
  • It featured a proprietary network called LBN Local Branch Network.
  • It was a multiuser, multitasking 32-bit operating system.
  • It supported a flat file system; there were no subdirectories. File name format was like this: diskname: usernumber. catalogname. filename. ext ; version
  • Later versions of TMX had Token-Ring support which was called LBN Emulation.
  • Main programming language was Whitesmiths C, but the compiler was not ANSI C compliant.
  • It had device support for financial applications on LBN, e.g. NCR dumb terminals, passbook printers, cash dispensers, magnetic stripe reader and pinpad.
  • Peripheral device configuration was fixed during boot time. Configuration changes were made using the SYSGEN command.

NCR Tower 5000 systems were also capable of running UNIX SVR3 version.

                                     
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