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Z8C-Homebrew-Computer/OperatingSystem/.unused/cmon/sdcc/share/doc/ucsim/stm8/test.div.html
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<title>DIV tests - available ST docs simply say '2-17 cycles'</title>
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<h1>DIV tests - available ST docs simply say '2-17 cycles'</h1>
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<p>The stated cycle count would seem to imply binary long division and
this is how the STM8 emulator in ucsim currently treats div for.
cycle counting. However the cycles measured on actual hardware
suggest this is not correct.
</p>
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<tr><td /><td class="Flushed" /></tr>
<tr><td>0x08198</td><td class="instr">ldw X,#0x0010</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x0819b</td><td class="instr">ld A,#0x80</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x0819d</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th>
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<tr><td /><td class="Flushed" /></tr>
<tr><td>0x081a0</td><td class="instr">ldw X,#0x0008</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081a3</td><td class="instr">ld A,#0x80</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081a5</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th>
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<tr><td>0x081a8</td><td class="instr">ldw X,#0x0004</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081ab</td><td class="instr">ld A,#0x80</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081ad</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th>
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<tr><td /><td class="Flushed" /></tr>
<tr><td>0x081b0</td><td class="instr">ldw X,#0x0002</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081b3</td><td class="instr">ld A,#0x80</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081b5</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th>
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<tr><td>0x081b8</td><td class="instr">ldw X,#0x0001</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081bb</td><td class="instr">ld A,#0x80</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081bd</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th>
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</a>
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<table class="pipetrace" onclick="toggle('pipetrace_legend')">
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<tr><td /><td class="Flushed" /></tr>
<tr><td>0x081c0</td><td class="instr">ldw X,#0x0000</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081c3</td><td class="instr">ld A,#0x80</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081c5</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th>
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</a>
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<table class="pipetrace" onclick="toggle('pipetrace_legend')">
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<tr><td /><td class="Flushed" /></tr>
<tr><td>0x081c8</td><td class="instr">ldw X,#0x003f</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081cb</td><td class="instr">ld A,#0x08</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081cd</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E"></td><td class=" E"></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th><th class="n">8</th><th class="n">9</th>
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</a>
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<table class="pipetrace" onclick="toggle('pipetrace_legend')">
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<tr><td /><td class="Flushed" /></tr>
<tr><td>0x081d0</td><td class="instr">ldw X,#0x0040</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081d3</td><td class="instr">ld A,#0x08</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081d5</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E"></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th><th class="n">8</th>
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</a>
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<table class="pipetrace" onclick="toggle('pipetrace_legend')">
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<tr><td /><td class="Flushed" /></tr>
<tr><td>0x081d8</td><td class="instr">ldw X,#0x0041</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081db</td><td class="instr">ld A,#0x08</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081dd</td><td class="instr">div X,A</td><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"></td><td class=" E"></td><td class=" E"></td><td class=" E" /></tr>
</tbody>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th><th class="n">8</th>
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</a>
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<table class="pipetrace" onclick="toggle('pipetrace_legend')">
<tbody>
<tr><td /><td class="Flushed" /></tr>
<tr><td>0x081e0</td><td class="instr">ldw X,#0x8000</td><td class=""><span class="F" /></td><td class=" D"><span class="F" /></td><td class=" E"><span class="F" /></td><td class=" E" /></tr>
<tr><td>0x081e3</td><td class="instr">ldw Y,#0x0001</td><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E"></td><td class=" E" /></tr>
<tr><td>0x081e7</td><td class="instr">divw X,Y</td><td class="" /><td class="" /><td class="" /><td class="" /><td class="" /><td class=" D"><span class="F" /></td><td class=" E" /></tr>
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<tr><th>Address</th><th>Instruction</th><th class="n">1</th><th class="n">2</th><th class="n">3</th><th class="n">4</th><th class="n">5</th><th class="n">6</th><th class="n">7</th>
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