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 |