GN_Dir, Create a directory path

Register parameters

RST 20H, DEFW $8809
IN:     BHL = pointer to null-terminated directory path name

out, if successful:
        Fc = 0, directory successfully created

out, if failed:
        Fc = 1, unable to create directory
        A = error code:
             RC_IVF, Invalid directory path name
             RC_USE, Directory in use
             RC_EXIS, Directory already exists

   registers changed after return:
        A.BCDEHL/IXIY  same
        .F....../....  different


  • API call implemented in OZ 5.0
  • Several sub-directories are accepted (eg. :RAM.0/dir1/dir2/dir3 ) up to 205 characters
  • Only accept explicit filenames (wildcard are not allowed)
  • However, if a RAM device is not specified, it will automatically be included (the current) into the directory name.
  • The buffer of the directory name must have space enough to get itself expanded with a device name (additional 6 bytes).
  • The filename must be terminated by a control character, eg. null (0) or CR (13).

Related calls

GN_Cl, close file 
GN_Del, delete a file from memory
GN_Opf, open file/resource (wildcard search)
GN_Ren, rename file 
OS_Cl, internal close (OZ usage) 
OS_Del, file delete (internal OZ usage) 
OS_Frm, file read miscellaneous 
OS_Fwm, file write miscellaneous 
OS_Gb, get byte from file (or device) 
OS_Gbt, get byte from file (or device) with timeout 
OS_Mv, move bytes between stream and memory 
OS_Op, internal open (OZ usage) 
OS_Pb, write byte to file, device 
OS_Pbt, write byte to file, device with timeout 
OS_Ren, file rename (internal OZ usage)

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