Transaction Management eXecutive
Transaction Management eXecutive or TMX was NCR Corporation's 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.
| Developer | NCR Corporation |
|---|---|
| Platforms | Motorola 68000 family |
| License | Proprietary |
Features
Basic features of the TMX operating system are listed below:
- It was a multiuser, multitasking 32-bit operating system.
- It featured a proprietary network called LBN (Local Branch Network).
- Later versions of TMX had Token Ring support which was called LBN Emulation.
- It had device support for financial applications on LBN, e.g. NCR dumb terminals, passbook printers, cash dispensers, magnetic stripe reader and pinpad.
- It contained SNA LU emulations for mainframe connectivity.
- Peripheral device configuration was fixed during boot time. Configuration changes were made using the
SYSGENcommand. - It supported a flat file system; there were no subdirectories. File name format was like this:
diskname:usernumber.catalogname.filename.ext;version - Files had various types, like text files and index sequential data files.
- Main programming language was Whitesmiths C, but the compiler was not ANSI C compliant.
- It had limited memory (several MB) and disk (several hundred MB).
NCR Tower 5000 systems were also capable of running UNIX SVR3 version.
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