s).
<BR>&nbsp;
<CENTER><A NAME="RegCounter"></A><FONT SIZE=+2>Counter/IRQ/NMI Registers</FONT></CENTER>

<CENTER>&nbsp;</CENTER>


<P><A NAME="Reg2137"></A><B><FONT FACE="Lucida Console">Register $2137:
Software latch for h/v counter (1b/R)</FONT></B>

<P>This register does not return a useful value.&nbsp; Apparently, though,
you have to read from this register before attempting to read $213C or
$213D.

<P><A NAME="Reg213C"></A><B><FONT FACE="Lucida Console">Register $213C
&amp; $213D: Horizontal/Vertical s