Differences
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en:docs:dos:api:int21:51 [2021/05/02 05:17] – created prokushev | en:docs:dos:api:int21:51 [2024/05/03 02:28] (current) – prokushev | ||
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===== Notes ===== | ===== Notes ===== | ||
- | DOS uses the current PSP address to determine which processes own files | + | DOS uses the current PSP address to determine which processes own files and memory; it corresponds to process identifiers used by other OSs |
- | | + | |
- | under DOS 2.x, this function cannot be invoked inside an INT 28h | + | under DOS 2.x, this function cannot be invoked inside an INT 28h handler without setting the Critical Error flag |
- | | + | |
- | under DOS 3.0+, this function does not use any of the DOS-internal | + | under DOS 3.0+, this function does not use any of the DOS-internal stacks and may thus be called at any time, even during another INT 21h call |
- | | + | |
- | | + | supported by OS/2 compatibility box |
- | supported by OS/2 compatibility box | + | |
- | identical to the documented AH=62h | + | identical to the documented AH=62h |
- | this call was undocumented prior to the release of DOS 5.0 | + | |
+ | this call was undocumented prior to the release of DOS 5.0 | ||
| | ||
===== See also ===== | ===== See also ===== | ||
- | AH=26h, | + | AH=[[en: |
===== Note ===== | ===== Note ===== |