GeneveOS XOP Definitions

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MDOS makes frequent use of XOPs and offers them for user programs. An XOP (extended operation) is a special command of the TMS processor family which causes a context switch, transferring control to a location that is specified in a table.

Compared to common architecture concepts, the XOP is TI's way of implementing a system call.


XOP number Category
5 Geneve keyboard control
6 Video
7 Memory Management Functions
8 Device operation
9 Utility functions
10 Mathematical functions