{{page>en:templates:dosint}} ====== Int 21H, AH=5BH ====== ===== Version ===== 3 and higher ===== Brief ===== CREATE NEW FILE ===== Family API ===== ===== Input ===== AH = 5Bh CX = file attribute (see #01420 at AX=4301h) DS:DX -> ASCIZ filename ===== Return ===== CF clear if successful AX = file handle opened for read/write in compatibility mode CF set on error AX = error code (03h,04h,05h,50h) (see #01680) ===== Notes ===== unlike AH=3Ch, this function will fail if the specified file exists rather than truncating it; this permits its use in creating semaphore files because it is an atomic "test and set" operation under the FlashTek X-32 DOS extender, the filename pointer is in DS:EDX ===== See also ===== AH=[[en:docs:dos:api:int21:3c|3Ch]],AH=[[en:docs:dos:api:int21:5a|5Ah]] ===== Note ===== Text based on [[http://www.cs.cmu.edu/~ralf/files.html|Ralf Brown Interrupt List Release 61]] {{page>en:templates:int}} {{page>en:templates:fapi}}