home *** CD-ROM | disk | FTP | other *** search
/ Games of Daze / Infomagic - Games of Daze (Summer 1995) (Disc 1 of 2).iso / x2ftp / msdos / source / siv / ret.inc < prev    next >
Encoding:
Text File  |  1994-04-10  |  376 b   |  18 lines
  1. waitretrace:
  2.         push    ax
  3.         push    dx
  4.         mov     dx,3dah
  5. VRT:
  6.         in      al,dx
  7.         test    al,8
  8.         jnz     VRT             ;wait until Verticle Retrace starts
  9.  
  10. NoVRT:
  11.         in      al,dx
  12.         test    al,8
  13.         jz      NoVRT           ;wait until Verticle Retrace Ends
  14.         pop     dx
  15.         pop     ax
  16.         ret
  17.  
  18.