en:docs:dos:api:int21:49

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en:docs:dos:api:int21:49 [2021/05/01 16:03] – created prokusheven:docs:dos:api:int21:49 [2024/05/03 02:09] (current) prokushev
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 ===== Notes ===== ===== Notes =====
  
-  apparently never returns an error 07h, despite official docs; DOS 2.1+ +apparently never returns an error 07h, despite official docs; DOS 2.1+ code contains only an error 09h exit 
-   code contains only an error 09h exit + 
- DOS 2.1-6.0 does not coalesce adjacent free blocks when a block is +DOS 2.1-6.0 does not coalesce adjacent free blocks when a block is freed, only when a block is allocated or resized 
-   freed, only when a block is allocated or resized + 
- the code for this function is identical in DOS 2.1-6.0 except for +the code for this function is identical in DOS 2.1-6.0 except for calls to start/end a critical section in DOS 3.0+
-   calls to start/end a critical section in DOS 3.0++
                      
 ===== See also ===== ===== See also =====
  
- AH=48h,AH=4Ah+AH=[[en:docs:dos:api:int21:48|48h]],AH=[[en:docs:dos:api:int21:4a|4Ah]]
  
 ===== Note ===== ===== Note =====