[net.micro.pc] Game adapter support

DIEGERT@SANDIA.ARPA (06/20/84)

From:  Carl Diegert <DIEGERT@SANDIA.ARPA>


Can someone point me to assembler routines to read (x,y) coordinates from
the game adapter port (201 hex)?

Looks like, with my KoalaPad, one could resolve about 280x280 points with
  mov cx,ffff
  mov dx,201
  out dx,al
  top: in al,dx
  and  al,1 ; for "x" coordinate
  loopnz top
  ...

Thanks.
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