Job File Table: Difference between revisions

Revision as of 01:35, 22 September 2004

Revision as of 01:38, 22 September 2004

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The '''Job File Table''' (JFT) is a [[DOS]] data structure in the [[Program Segment Prefix]] (PSP). For each open file handle, [[DOS]] stores the index into the [[System File Table]]. A file handle that is returned by open, _open and other similar functions is simply an index into the JFT where [[DOS]] stored the SFT entry index for the file or device that the program opened.

When a program starts, the first 5 entries in the JFT are preconnected to the standard devices.