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	<TD BGCOLOR="#C0FF70">Read Write</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Screen Size</TD>
	<TD BGCOLOR="#000000">&nbsp</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="5">Screen Base Addr</TD>
	<TD BGCOLOR="#C0FF70">Unified Palette</TD>
	<TD BGCOLOR="#C0FF70">Mosiac</TD>
	<TD BGCOLOR="#D0D0D0">0</TD>
	<TD BGCOLOR="#D0D0D0">0</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Tile Base Addr</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Priority</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$00C</TD>
	<TD>BG2_CR</TD>
	<TD BGCOLOR="#C0FF70">Read Write</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Screen Size</TD>
	<TD BGCOLOR="#C0FF70">Overflow Mode</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="5">Screen Base Addr</TD>
	<TD BGCOLOR="#C0FF70">Unified Palette</TD>
	<TD BGCOLOR="#C0FF70">Mosiac</TD>
	<TD BGCOLOR="#D0D0D0">0</TD>
	<TD BGCOLOR="#D0D0D0">0</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Tile Base Addr</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Priority</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$00E</TD>
	<TD>BG3_CR</TD>
	<TD BGCOLOR="#C0FF70">Read Write</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Screen Size</TD>
	<TD BGCOLOR="#C0FF70">Overflow Mode</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="5">Screen Base Addr</TD>
	<TD BGCOLOR="#C0FF70">Unified Palette</TD>
	<TD BGCOLOR="#C0FF70">Mosiac</TD>
	<TD BGCOLOR="#D0D0D0">0</TD>
	<TD BGCOLOR="#D0D0D0">0</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Tile Base Addr</TD>
	<TD BGCOLOR="#C0FF70" COLSPAN="2">Priority</TD>
</TR>
</TABLE>

<H3>Details</H3>
<P>
<UL>
<LI>Each bit in IF indicates that an IRQ enabled with the corresponding bit in IE has occured.</LI>
<LI>The hardware never clears the IF register, this must be done by the user's interrupt handler writing back the bits that it has acknowledged (writing a zero will not alter the bit in IF, a 1 must be written to reset bits in IF).</LI>
</UL>
</P>

<HR><!------------------------------------------------------------------------->

<A NAME="reg10"><A NAME="reg12"><A NAME="reg14"><A NAME="reg16"><A NAME="reg18"><A NAME="reg1A"><A NAME="reg1C"><A NAME="reg1E">
<H2>Text Mode Scroll Registers (<CODE>BG<EM>n</EM>_X</CODE> and <CODE>BG<EM>n</EM>_Y</CODE>)</H2>
<TABLE BORDER="1" SUMMARY="Video Registers">
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>Offset</TD><TD>Name</TD><TD>Type</TD>
	<TD>F</TD><TD>E</TD><TD>D</TD><TD>C</TD><TD>B</TD><TD>A</TD><TD>9</TD><TD>8</TD>
	<TD>7</TD><TD>6</TD><TD>5</TD><TD>4</TD><TD>3</TD><TD>2</TD><TD>1</TD><TD>0</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$010</TD>
	<TD>BG0_X</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="7">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="9">Horizontal Scroll (9 bits)</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$012</TD>
	<TD>BG0_Y</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="7">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="9">Vertical Scroll (9 bits)</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$014</TD>
	<TD>BG1_X</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="7">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="9">Horizontal Scroll (9 bits)</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$016</TD>
	<TD>BG1_Y</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="7">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="9">Vertical Scroll (9 bits)</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$018</TD>
	<TD>BG2_X</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="7">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="9">Horizontal Scroll (9 bits)</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$01A</TD>
	<TD>BG2_Y</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="7">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="9">Vertical Scroll (9 bits)</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$01C</TD>
	<TD>BG3_X</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="7">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="9">Horizontal Scroll (9 bits)</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$01E</TD>
	<TD>BG3_Y</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="7">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="9">Vertical Scroll (9 bits)</TD>
</TR>
</TABLE>


<A NAME="reg20"><A NAME="reg22"><A NAME="reg24"><A NAME="reg26"><A NAME="reg28"><A NAME="reg2A"><A NAME="reg2C"><A NAME="reg2E">
<A NAME="reg30"><A NAME="reg32"><A NAME="reg34"><A NAME="reg36"><A NAME="reg38"><A NAME="reg3A"><A NAME="reg3C"><A NAME="reg3E">
<H2>Rot/Scale Matrix Registers</H2>
<TABLE>
<TR><TD>
<TABLE BORDER="1" SUMMARY="Video Registers">
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>Offset</TD><TD>Name</TD><TD>Type</TD>
	<TD>F</TD><TD>E</TD><TD>D</TD><TD>C</TD><TD>B</TD><TD>A</TD><TD>9</TD><TD>8</TD>
	<TD>7</TD><TD>6</TD><TD>5</TD><TD>4</TD><TD>3</TD><TD>2</TD><TD>1</TD><TD>0</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$020</TD>
	<TD>BG2_HDX</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">8.8 H-Step, X-Dir Texture Delta</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$022</TD>
	<TD>BG2_VDX</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">8.8 V-Step, X-Dir Texture Delta</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$024</TD>
	<TD>BG2_HDY</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">8.8 H-Step, Y-Dir Texture Delta</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$026</TD>
	<TD>BG2_VDY</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">8.8 V-Step, Y-Dir Texture Delta</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$028</TD>
	<TD>BG2_XL</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">Low 16 of 20.8 X Center</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$02A</TD>
	<TD>BG2_XH</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="4">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="12">High 12 of 20.8 X Center</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$02C</TD>
	<TD>BG2_YL</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">Low 16 of 20.8 Y Center</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$02E</TD>
	<TD>BG2_YH</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="4">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="12">High 12 of 20.8 Y Center</TD>
</TR>
</TABLE>

</TD>
<TD>

<TABLE BORDER="1" SUMMARY="Video Registers">
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>Offset</TD><TD>Name</TD><TD>Type</TD>
	<TD>F</TD><TD>E</TD><TD>D</TD><TD>C</TD><TD>B</TD><TD>A</TD><TD>9</TD><TD>8</TD>
	<TD>7</TD><TD>6</TD><TD>5</TD><TD>4</TD><TD>3</TD><TD>2</TD><TD>1</TD><TD>0</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$030</TD>
	<TD>BG3_DX</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">8.8 H-Step, X-Dir Texture Delta</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$032</TD>
	<TD>BG3_VDX</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">8.8 V-Step, X-Dir Texture Delta</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$034</TD>
	<TD>BG3_DY</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">8.8 H-Step, Y-Dir Texture Delta</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$036</TD>
	<TD>BG3_VDY</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">8.8 V-Step, Y-Dir Texture Delta</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$038</TD>
	<TD>BG3_XL</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">Low 16 of 20.8 X Center</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$03A</TD>
	<TD>BG3_XH</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="4">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="12">High 12 of 20.8 X Center</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$03C</TD>
	<TD>BG3_YL</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="16">Low 16 of 20.8 Y Center</TD>
</TR>
<TR ALIGN="CENTER" BGCOLOR="#FFD050">
	<TD>$03E</TD>
	<TD>BG3_YH</TD>
	<TD BGCOLOR="#FFC0C0">Write Only</TD>
	<TD BGCOLOR="#000000" COLSPAN="4">&nbsp</TD>
	<TD BGCOLOR="#FFC0C0" COLSPAN="12">High 12 of 20.8 Y Center</TD>
</TR>
</TABLE>
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