16/xw__/mxwp.asm

   1 .387
   2                 PUBLIC  MXWRITEPLANE
   3                 PUBLIC  MXREADPLANE
   4 MX_TEXT         SEGMENT PARA PUBLIC USE16 'CODE'
   5                 ASSUME CS:MX_TEXT, DS:DGROUP, SS:DGROUP
   6 MXWRITEPLANE:
   7         push            bp
   8         mov             bp,sp
   9         sub             sp,0
  10         mov             ah,byte ptr 6[bp]
  11         and             ah,0fH
  12         mov             al,2
  13         mov             dx,3c4H
  14         out             dx,ax
  15         mov             sp,bp
  16         pop             bp
  17         retf            2
  18 MXREADPLANE:
  19         push            bp
  20         mov             bp,sp
  21         sub             sp,0
  22         mov             al,4
  23         mov             ah,byte ptr 6[bp]
  24         and             ah,3
  25         mov             dx,3ceH
  26         out             dx,ax
  27         mov             sp,bp
  28         pop             bp
  29         retf            2
  30 MX_TEXT         ENDS
  31                 END