Emulator High-level Language Application Program Interface (EHLLAPI) is an enhanced version of HLLAPI. It was introduced in 1986 by IBM in association with the

IBM 3270 PC The IBM 3270 PC (IBM System Unit 5271), released in October 1983, is an IBM PC XT containing additional hardware that, in combination with software, can emulate the behaviour of an IBM 3270 terminal. It can therefore be used both as a standalon ...

to provide access from a DOS PC environment to data on an IBM mainframe. EHLLAPI can be used to determine screen characters, track and send keystrokes, check the host status and perform file transfers. Typically this API was employed for communication with existing mainframe applications without the need to modify the application code."EHLLAPI Functions"
IBM.COM EHLLAPI could map a screen between different

IBM 3270 The IBM 3270 is a family of block oriented display and printer computer terminals introduced by IBM in 1971 and normally used to communicate with IBM mainframes. The 3270 was the successor to the IBM 2260 display terminal. Due to the text ...

legacy applications, allowing information to be transferred between the two. It was often used for automated control of applications via keystroke input and

screen scraping Data scraping is a technique where a computer program extracts data from human-readable output coming from another program. Description Normally, data transfer between programs is accomplished using data structures suited for automated pro ...

. This IBM standard is supported by most terminal emulators.

References

IBM software Application programming interfaces {{emulation-stub

See also

References