Online HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens
INT 21,F - Open a File Using FCB
AH = 0F
DS:DX = pointer to unopened FCB
on return:
AL = 00 if file opened
= FF if unable to open
- opens an existing file using a previously setup FCB
- the FCB fields drive identifier, filename and extension
must be filled in before call
- sets default FCB fields; current block number is set to 0;
record size is set to 80h; file size, date and time are set
to the values from the directory
- does not create file, see INT 21,16
- DOS 2.x allows opening of subdirectories, DOS 3.x does not
[helppc.bosbyte.nl] int 21,f