Editing Transaction Processing Facility (section)

==History==
TPF evolved from the [[Airline Control Program]] (ACP), a free package developed in the mid-1960s by [[IBM]] in association with major North American and European airlines.  In 1979, IBM introduced TPF as a replacement for ACP&nbsp;&mdash; and as a priced software product. The new name suggests its greater scope and evolution into non-airline related entities.

TPF was traditionally an [[IBM System/370]] [[assembly language]] environment for performance reasons, and many TPF assembler applications persist. However, more recent versions of TPF encourage the use of [[C (programming language)|C]]. Another [[programming language]] called [[SabreTalk]] was born and died on TPF.

IBM announced the delivery of the current release of TPF, dubbed z/TPF V1.1, in September 2005. Most significantly, z/TPF adds 64-bit addressing and mandates use of the 64-bit [[GNU]] development tools.<ref>{{cite news |newspaper=[[Computerworld]]
   |url=https://www.computerworld.com/article/2326123/ibm-bolsters-its-mainframe-platform.html
   |title=IBM bolsters its mainframe platform}}</ref><ref>{{cite news |newspaper=[[Computerworld]]
|url=https://www.computerworld.com/article/2543201/ibm-pumps-up-linux-virtual-machines-on-mainframe-os.html
|author=Jennifer Mears
|title=IBM pumps up Linux virtual machines on mainframe OS}}</ref>

The [[GNU Compiler Collection|GCC compiler]] and the DIGNUS Systems/C++ and Systems/C are the only supported compilers for z/TPF. The Dignus compilers offer reduced source code changes when moving from TPF 4.1 to z/TPF.