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appendix_d.htm
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>MC6809-MC6809E Microprocessor Programming Manual [M6809PM] - Appendix D - Maddes.net</title>
<link rel="stylesheet" type="text/css" media="all" href="css/m6809pm.css">
</head>
<body><div class="text">
<a name="top"></a>
<table border="0"><tr>
<td><a href="index.htm">ToC</a></td>
<td><a href="https://github.com/M6809-Docs/m6809pm" target="_top">Contact</a></td>
</tr></table>
<hr>
<h1>MC6809-MC6809E 8-Bit Microprocessor Programming Manual [M6809PM/AD]<br>© Motorola Inc., 1981</h1>
<h1><a name="appD"></a>APPENDIX D - PROGRAMMING AID</h1>
<p>PDF pages 203-206</p>
<h2><a name="appD_1"></a>D.1 INTRODUCTION</h2>
<p>This appendix contains a compilation of data that will assist you in programming the M6809 processor.
Refer to Table D-1.</p>
<h2><a name="tabD-1"></a>Table D-1. Programming Aid</h2>
<table>
<tr>
<td colspan="2"><span class="underline">Legend:</span> (PDF page 205)</td>
<td></td>
<td><span class="lowsignal">M</span></td>
<td>Complement of M</td>
<td></td>
<td>¦</td>
<td>Test and set if true, cleared otherwise</td>
</tr>
<tr>
<td>OP</td>
<td>Operation Code (Hexadecimal)</td>
<td></td>
<td>→</td>
<td>Transfer Into</td>
<td></td>
<td>•</td>
<td>Not Affected</td>
</tr>
<tr>
<td>~</td>
<td>Number of MPU Cycles</td>
<td></td>
<td>H</td>
<td>Half-carry (from bit 3)</td>
<td></td>
<td>CC</td>
<td>Condition Code Register</td>
</tr>
<tr>
<td>#</td>
<td>Number of Program Bytes</td>
<td></td>
<td>N</td>
<td>Negative (sign bit)</td>
<td></td>
<td>:</td>
<td>Concatenation</td>
</tr>
<tr>
<td>+</td>
<td>Arithmetic Plus</td>
<td></td>
<td>Z</td>
<td>Zero (Reset)</td>
<td></td>
<td>∨</td>
<td>Logical or</td>
</tr>
<tr>
<td>-</td>
<td>Arithmetic Minus</td>
<td></td>
<td>V</td>
<td>Overflow, 2's complement</td>
<td></td>
<td>∧</td>
<td>Logical and</td>
</tr>
<tr>
<td>×</td>
<td>Multiply</td>
<td></td>
<td>C</td>
<td>Carry from ALU</td>
<td></td>
<td>∀</td>
<td>Logical Exclusive or</td>
</tr>
</table>
<p></p>
<table class="tabD-1a">
<caption>Branch Instructions</caption>
<tr>
<th rowspan="3">Instruction</th>
<th rowspan="3">Forms</th>
<th colspan="3">Addressing<br>Mode</th>
<th rowspan="3">Description</th>
<th rowspan="2">5</th>
<th rowspan="2">3</th>
<th rowspan="2">2</th>
<th rowspan="2">1</th>
<th rowspan="2">0</th>
</tr>
<tr>
<th colspan="3">Relative</th>
</tr>
<tr>
<th>OP</th>
<th>~</th>
<th>#</th>
<th>H</th>
<th>N</th>
<th>Z</th>
<th>V</th>
<th>C</th>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BCC</td>
<td>BCC</td>
<td>24</td>
<td>3</td>
<td>2</td>
<td>Branch C = 0</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBCC</td>
<td>10 24</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch C = 0</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BCS</td>
<td>BCS</td>
<td>25</td>
<td>3</td>
<td>2</td>
<td>Branch C = 1</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBCS</td>
<td>10 25</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch C = 1</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BEQ</td>
<td>BEQ</td>
<td>27</td>
<td>3</td>
<td>2</td>
<td>Branch Z = 0</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBEQ</td>
<td>10 27</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch Z = 0</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BGE</td>
<td>BGE</td>
<td>2C</td>
<td>3</td>
<td>2</td>
<td>Branch ≥ Zero</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBGE</td>
<td>10 2C</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch ≥ Zero</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BGT</td>
<td>BGT</td>
<td>2E</td>
<td>3</td>
<td>2</td>
<td>Branch > Zero</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBGT</td>
<td>10 2E</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch > Zero</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BHI</td>
<td>BHI</td>
<td>22</td>
<td>3</td>
<td>2</td>
<td>Branch Higher</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBHI</td>
<td>10 22</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch Higher</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BHS</td>
<td>BHS</td>
<td>24</td>
<td>3</td>
<td>2</td>
<td>Branch Higher or Same</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBHS</td>
<td>10 24</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch Higher or Same</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BLE</td>
<td>BLE</td>
<td>2F</td>
<td>3</td>
<td>2</td>
<td>Branch ≤ Zero</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBLE</td>
<td>10 2F</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch ≤ Zero</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BLO</td>
<td>BLO</td>
<td>25</td>
<td>3</td>
<td>2</td>
<td>Branch Lower</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBLO</td>
<td>10 25</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch Lower</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BLS</td>
<td>BLS</td>
<td>23</td>
<td>3</td>
<td>2</td>
<td>Branch Lower or Same</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBLS</td>
<td>10 23</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch Lower or Same</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BLT</td>
<td>BLT</td>
<td>2D</td>
<td>3</td>
<td>2</td>
<td>Branch < Zero</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBLT</td>
<td>10 2D</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch < Zero</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BMI</td>
<td>BMI</td>
<td>2B</td>
<td>3</td>
<td>2</td>
<td>Branch Minus</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBMI</td>
<td>10 2B</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch Minus</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BNE</td>
<td>BNE</td>
<td>26</td>
<td>3</td>
<td>2</td>
<td>Branch Z ≠ 0</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBNE</td>
<td>10 26</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch Z ≠ 0</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BPL</td>
<td>BPL</td>
<td>2A</td>
<td>3</td>
<td>2</td>
<td>Branch Plus</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBPL</td>
<td>10 2A</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch Plus</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BRA</td>
<td>BRA</td>
<td>20</td>
<td>3</td>
<td>2</td>
<td>Branch Always</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBRA</td>
<td>16</td>
<td>5</td>
<td>3</td>
<td>Long Branch Always</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BRN</td>
<td>BRN</td>
<td>21</td>
<td>3</td>
<td>2</td>
<td>Branch Never</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBRN</td>
<td>10 21</td>
<td>5</td>
<td>4</td>
<td>Long Branch Never</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BSR</td>
<td>BSR</td>
<td>8D</td>
<td>7</td>
<td>2</td>
<td>Branch to Subroutine</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBSR</td>
<td>17</td>
<td>9</td>
<td>3</td>
<td>Long Branch to Subroutine</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BVC</td>
<td>BVC</td>
<td>28</td>
<td>3</td>
<td>2</td>
<td>Branch V = 0</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBVC</td>
<td>10 28</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch V = 0</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">BVS</td>
<td>BVS</td>
<td>29</td>
<td>3</td>
<td>2</td>
<td>Branch V = 1</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernotop">
<td>LBVS</td>
<td>10 29</td>
<td>5(6)</td>
<td>4</td>
<td>Long Branch V = 1</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
</table>
<p></p>
<table>
<caption><a name="tabD-1b"></a>Simple Branches</caption>
<tr>
<th colspan="2"></th>
<th class="borderbottom">OP</th>
<th class="borderbottom">~</th>
<th class="borderbottom">#</th>
</tr>
<tr>
<td>BRA</td>
<td></td>
<td>20</td>
<td>3</td>
<td>2</td>
</tr>
<tr>
<td>LBRA</td>
<td></td>
<td>16</td>
<td>5</td>
<td>3</td>
</tr>
<tr>
<td>BRN</td>
<td></td>
<td>21</td>
<td>3</td>
<td>2</td>
</tr>
<tr>
<td>LBRN</td>
<td></td>
<td>10 21</td>
<td>5</td>
<td>4</td>
</tr>
<tr>
<td>BSR</td>
<td></td>
<td>8D</td>
<td>7</td>
<td>2</td>
</tr>
<tr>
<td>LBSR</td>
<td></td>
<td>17</td>
<td>9</td>
<td>3</td>
</tr>
</table>
<p></p>
<table>
<caption><a name="tabD-1c"></a>Simple Conditional Branches (<a href="#noteD-1a">Notes 1-4</a>)</caption>
<tr class="borderbottom">
<th>Test</th>
<th></th>
<th>True</th>
<th>OP</th>
<th></th>
<th>False</th>
<th>OP</th>
</tr>
<tr>
<td>N = 1</td>
<td></td>
<td>BMI</td>
<td>2B</td>
<td></td>
<td>BPL</td>
<td>2A</td>
</tr>
<tr>
<td>Z = 1</td>
<td></td>
<td>BEQ</td>
<td>27</td>
<td></td>
<td>BNE</td>
<td>26</td>
</tr>
<tr>
<td>V = 1</td>
<td></td>
<td>BVS</td>
<td>29</td>
<td></td>
<td>BVC</td>
<td>28</td>
</tr>
<tr>
<td>C = 1</td>
<td></td>
<td>BCS</td>
<td>25</td>
<td></td>
<td>BCC</td>
<td>24</td>
</tr>
</table>
<p></p>
<table>
<caption><a name="tabD-1d"></a>Signed Conditional Branches (<a href="#noteD-1a">Notes 1-4</a>)</caption>
<tr class="borderbottom">
<th>Test</th>
<th></th>
<th>True</th>
<th>OP</th>
<th></th>
<th>False</th>
<th>OP</th>
</tr>
<tr>
<td>r > m</td>
<td></td>
<td>BGT</td>
<td>2E</td>
<td>BLE</td>
<td>2F</td>
</tr>
<tr>
<td>r ≥ m</td>
<td></td>
<td>BGE</td>
<td>2C</td>
<td>BLT</td>
<td>2D</td>
</tr>
<tr>
<td>r = m</td>
<td></td>
<td>BEQ</td>
<td>27</td>
<td>BNE</td>
<td>26</td>
</tr>
<tr>
<td>r ≤ m</td>
<td></td>
<td>BLE</td>
<td>2F</td>
<td>BGT</td>
<td>2E</td>
</tr>
<tr>
<td>r < m</td>
<td></td>
<td>BLT</td>
<td>2D</td>
<td>BGE</td>
<td>2C</td>
</tr>
</table>
<p></p>
<table>
<caption><a name="tabD-1e"></a>Unsigned Conditional Branches (<a href="#noteD-1a">Notes 1-4</a>)</caption>
<tr class="borderbottom">
<th>Test</th>
<th></th>
<th>True</th>
<th>OP</th>
<th></th>
<th>False</th>
<th>OP</th>
</tr>
<tr>
<td>r > m</td>
<td></td>
<td>BHI</td>
<td>22</td>
<td>BLS</td>
<td>23</td>
</tr>
<tr>
<td>r ≥ m</td>
<td></td>
<td>BHS</td>
<td>24</td>
<td>BLO</td>
<td>25</td>
</tr>
<tr>
<td>r = m</td>
<td></td>
<td>BEQ</td>
<td>27</td>
<td>BNE</td>
<td>26</td>
</tr>
<tr>
<td>r ≤ m</td>
<td></td>
<td>BLS</td>
<td>23</td>
<td>BHI</td>
<td>22</td>
</tr>
<tr>
<td>r < m</td>
<td></td>
<td>BLO</td>
<td>25</td>
<td>BHS</td>
<td>24</td>
</tr>
</table>
<p><a name="noteD-1a"></a>Notes:</p>
<ol>
<li>All conditional branches have both short and long variations.</li>
<li>All short branches are 2 bytes and require 3 cycles.</li>
<li>All conditional long branches are formed by prefixing the short branch opcode with $10 and using a 16-bit destination offset.</li>
<li>All conditional long branches require 4 bytes and 6 cycles if the branch is taken or 5 cycles if the branch is not taken.</li>
<li><span class="correction">5(6) means: 5 cycles if branch not taken, 6 cycles if taken.</span></li>
</ol>
<p> </p>
</div>
<div>
<a name="tabD-1f"></a>
<table class="tabD-1f">
<tr>
<th rowspan="3">Instruction</th>
<th rowspan="3">Forms</th>
<th colspan="15">Addressing Modes</th>
<th rowspan="3">Description</th>
<th rowspan="2">5</th>
<th rowspan="2">3</th>
<th rowspan="2">2</th>
<th rowspan="2">1</th>
<th rowspan="2">0</th>
</tr>
<tr>
<th colspan="3">Immediate</th>
<th colspan="3">Direct</th>
<th colspan="3">Indexed<sup><a href="#noteD-1f1">1</a></sup></th>
<th colspan="3">Extended</th>
<th colspan="3">Inherent</th>
</tr>
<tr>
<th>Op</th>
<th>~</th>
<th>#</th>
<th>Op</th>
<th>~</th>
<th>#</th>
<th>Op</th>
<th>~</th>
<th>#</th>
<th>Op</th>
<th>~</th>
<th>#</th>
<th>Op</th>
<th>~</th>
<th>#</th>
<th>H</th>
<th>N</th>
<th>Z</th>
<th>V</th>
<th>C</th>
</tr>
<tr class="borders">
<td>ABX</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td>3A</td>
<td>3</td>
<td>1</td>
<td>B + X → X (Unsigned)</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
<td>•</td>
</tr>
<tr class="bordernobottom">
<td rowspan="2" class="borders">ADC</td>
<td>ADCA</td>
<td>89</td>
<td>2</td>
<td>2</td>
<td>99</td>
<td>4</td>
<td>2</td>
<td>A9</td>
<td>4+</td>
<td>2+</td>
<td>B9</td>
<td>5</td>
<td>3</td>
<td></td>
<td></td>
<td></td>
<td>A + M + C → A</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
</tr>
<tr class="bordernotop">
<td>ADCB</td>
<td>C9</td>
<td>2</td>
<td>2</td>
<td>D9</td>
<td>4</td>
<td>2</td>
<td>E9</td>
<td>4+</td>
<td>2+</td>
<td>F9</td>
<td>5</td>
<td>3</td>
<td></td>
<td></td>
<td></td>
<td>B + M + C → B</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
</tr>
<tr class="bordernobottom">
<td rowspan="3">ADD</td>
<td>ADDA</td>
<td>8B</td>
<td>2</td>
<td>2</td>
<td>9B</td>
<td>4</td>
<td>2</td>
<td>AB</td>
<td>4+</td>
<td>2+</td>
<td>BB</td>
<td>5</td>
<td>3</td>
<td></td>
<td></td>
<td></td>
<td>A + M → A</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
</tr>
<tr>
<td>ADDB</td>
<td>CB</td>
<td>2</td>
<td>2</td>
<td>DB</td>
<td>4</td>
<td>2</td>
<td>EB</td>
<td>4+</td>
<td>2+</td>
<td>FB</td>
<td>5</td>
<td>3</td>
<td></td>
<td></td>
<td></td>
<td>B + M → B</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
<td>¦</td>
</tr>
<tr class="bordernotop">
<td>ADDD</td>
<td>C3</td>
<td>4</td>
<td>3</td>
<td>D3</td>
<td>6</td>
<td>2</td>
<td>E3</td>
<td>6+</td>
<td>2+</td>
<td>F3</td>
<td>7</td>
<td>3</td>
<td></td>
<td></td>
<td></td>
<td>D + M:M+1 → D</td>