Platform SDK: Win32 API |
Converts MS-DOS date and time values to 64-bit file time.
mov ax, 71A7h ; date and time format conversion mov bl, 1 ; Dos Time To File Time mov bh, MilliSeconds ; see below mov cx, DOSTime ; see below mov dx, DOSDate ; see below mov di, seg lpft ; see below mov es, di mov di, offset lpft int 21h jc error
Bits | Contents |
0–4 | Second divided by 2 |
5–10 | Minute (0–59) |
11–15 | Hour (0–23 on a 24-hour clock) |
Bits | Contents |
0–4 | Day of the month (1–31) |
5–8 | Month (1 = January, 2 = February, and so on) |
9–15 | Year offset from 1980 (that is, add 1980 to get the actual year) |
Clears the carry flag and returns the 64-bit file time in the specified structure if successful. Otherwise, the function sets the carry flag and sets the AX register to an error value.
The time in FILETIME must be Coordinated Universal Time (UTC). The MS-DOS time is local time.