file but has architecture 
       other than DAS, the error SPICE(BADARCHTYPE) is signaled. 
 
   3)  If the input file is a binary DAS file of type other than 
       DSK, the error SPICE(BADFILETYPE) is signaled. 
 
   4)  If the DSK file cannot be opened or read, the error will 
       be diagnosed by routines called by this routine. 
 
   5)  If the size of the output set argument `srfids' is insufficient 
       to contain the actual number of ID codes of objects covered 
       by the indicated DSK fi