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XMS API implemented via VXMS.DLL VDD
| Function | Description | Status | Version |
|---|---|---|---|
| 00h | Get XMS Version Number | ||
| 01h | Request High Memory Area | ||
| 02h | Release High Memory Area | ||
| 03h | Global Enable A20 | ||
| 04h | Global Disable A20 | ||
| 05h | Local Enable A20 | ||
| 06h | Local Disable A20 | ||
| 07h | Query A20 | ||
| 08h | Query Free Extended Memory | ||
| 09h | Allocate Extended Memory Block | ||
| 0Ah | Free Extended Memory Block | ||
| 0Bh | Move Extended Memory Block | ||
| 0Ch | Lock Extended Memory Block | ||
| 0Dh | Unlock Extended Memory Block | ||
| 0Eh | Get Handle Information | ||
| 0Fh | Reallocate Extended Memory Block | ||
| 10h | Request Upper Memory Block | ||
| 11h | Release Upper Memory Block | ||
| 12h | Realloc Upper Memory Block | ||
| 88h | Query any Free Extended Memory | ||
| 89h | Allocate any Extended Memory Block | ||
| 8Eh | Get Extended EMB Handle | ||
| 8Fh | Realloc any Extended Memory |