ermined is that the scroll register seems to cause
pixel-based scrolling: that is, increasing this register by one will make
the screen scroll a slight amount right or down.&nbsp; (256/224 would be
one screenful.)

<P>Since there is only one BG in Mode 7, the 'm' bits apply only to registers
$210D and $210E.

<P><A NAME="Reg212C"></A><B><FONT FACE="Lucida Console">Register $212C
&amp; $212D: Main/Sub Screen Designation (2*1b/W)</FONT></B>
<PRE>210D: Main Screen Designation
210F: Sub Screen Designation

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