http://yf2xankbjprn7xs2pd67xix7idfqyxbbl2zul3dgwln2wwefqjsa.b32.i2p/doku/doku.php?id=en:docs:dpmi:api:int2f:16:80
All DPMI hosts will hook Int 2FH and so a DPMI client can use this API without any other precautions. Non-DPMI programs that can run on DOS
2.xx or earlier should make sure that the Int 2FH vector is non-zero before executing the Int 2FH. When an application calls this function it will regain control at intervals, so it should continue to re-issue this function call so long as it has nothing to do.
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