r out&nbsp; (0=in,</TT>
<BR><TT>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b: Enable Window 1&nbsp;
a: Clip Window 1 in or out&nbsp;&nbsp; 1=out)</TT>

<P>These registers determine which Windows to apply to which BGs, and whether
clipping should be performed inside or outside the window.&nbsp; To enable
windowing, the appropriate bits in <A HREF="#Reg212E">registers $212E and
$212F</A> must be set in addition to the bits in these registers.

<P><A NAME="Reg2125"></A><B><FONT FACE="Lucida Console">Register $