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====== Int 21H, AH=57H, AL=01H ======

===== Version =====

2 and higher

===== Brief =====

SET FILE'S LAST-WRITTEN DATE AND TIME

===== Family API =====


===== Input =====

	AX = 5701h
	BX = file handle
	CX = new time (see #01665)
	DX = new date (see #01666)

===== Return =====

  CF clear if successful
	CF set on error
	    AX = error code (01h,06h) (see #01680)

===== Notes =====

Bitfields for file time:

^ Bit(s) ^ Description ^
| 15-11 | hours (0-23) |
| 10-5 | minutes |
| 4-0 | seconds/2 |

Bitfields for file date:

^ Bit(s) ^ Description ^
| 15-9 | year - 1980 |
| 8-5 | month |
| 4-0 | day |
          
===== See also =====

AX=[[en:docs:dos:api:int21:57:00|5700h]],AX=[[en:docs:dos:api:int21:57:05|5705h]]"Windows95",AX=[[en:docs:dos:api:int21:57:07|5707h]]"Windows95"

===== Note =====

Text based on [[http://www.cs.cmu.edu/~ralf/files.html|Ralf Brown Interrupt List Release 61]]

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