DMA transfer is initiated while a HDMA channel
is enabled, nothing will happen.

<P><A NAME="Reg420C"></A><B><FONT FACE="Lucida Console">Register $420C:
Enable H-DMA transfer (1b/W)</FONT></B>
<PRE>76543210&nbsp; Bits indicate which HDMA channel(s) to enable
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1=Enable transfers, 0=Disable transfers)</PRE>
After setting up the HDMA transfer(s), a 1 should be written to all the
bits corresponding to the channels you want enabled.&nbsp; Every scanline,
HDM