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/ The CICA Windows Explosion! / The CICA Windows Explosion! - Disc 2.iso / programr / rsxwdk2s.zip / RSXWDK / LIBSRC / DOS / DOS19.C < prev    next >
C/C++ Source or Header  |  1994-12-17  |  251b  |  18 lines
  1. #include <errno.h>
  2. #include <sys/doscalls.h>
  3.  
  4. /*
  5. ** AH = 0x19
  6. ** return: AL this drive (a=0,b=1,c=2)
  7. */
  8. unsigned char dos_getdrive(void)
  9. {
  10.     struct REGPACK r;
  11.  
  12.     r.eax = 0x1900;
  13.  
  14.     _intr(0x21, &r);
  15.  
  16.     return (r.eax & 0xFF);
  17. }
  18.