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BEXT - Revision history
2026-05-14T16:40:32Z
Revision history for this page on the wiki
MediaWiki 1.30.0
http://wiki.intellivision.us/index.php?title=BEXT&diff=14750&oldid=prev
Mr z: Protected "BEXT" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite))
2010-12-04T07:57:54Z
<p>Protected "<a href="/index.php/BEXT" title="BEXT">BEXT</a>" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite))</p>
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<td colspan="1" style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan="1" style="background-color: white; color:black; text-align: center;">Revision as of 07:57, 4 December 2010</td>
</tr><tr><td colspan="2" style="text-align: center;" lang="en"><div class="mw-diff-empty">(No difference)</div>
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Mr z
http://wiki.intellivision.us/index.php?title=BEXT&diff=1406&oldid=prev
Mr z: /* EBCA0-3 are outputs. Also, all 16 bits signficant in branch disp. */
2005-01-12T18:53:39Z
<p><span dir="auto"><span class="autocomment">EBCA0-3 are outputs. Also, all 16 bits signficant in branch disp.</span></span></p>
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<td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 18:53, 12 January 2005</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l10" >Line 10:</td>
<td colspan="2" class="diff-lineno">Line 10:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>The Branch on External opcode (BEXT) is a two-decle opcode that is a part of the [[Branch]] family of opcodes.  This instruction causes the [[CP1610]] to branch if the external pins EBCA0-EBCA3 match the specified value.  If this condition is true, the CP1610 branches to the address specified by the following parameters.<br/></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>The Branch on External opcode (BEXT) is a two-decle opcode that is a part of the [[Branch]] family of opcodes.  This instruction causes the [[CP1610]] to branch if the external pins EBCA0-EBCA3 match the specified value.  If this condition is true, the CP1610 branches to the address specified by the following parameters.<br/></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>     Format - Decle #1    Format - Word #2 (<del class="diffchange diffchange-inline">Unknown if all </del>16 bits are significant)</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>     Format - Decle #1    Format - Word #2 (<ins class="diffchange diffchange-inline">All </ins>16 bits are significant)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>     0000:0010:00d1:cccc  aaaa:aaaa:aaaa:aaaa<br/></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>     0000:0010:00d1:cccc  aaaa:aaaa:aaaa:aaaa<br/></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>     where:<br/></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>     where:<br/></div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l17" >Line 17:</td>
<td colspan="2" class="diff-lineno">Line 17:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>                   d == 0    indicates to branch in the forward direction</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>                   d == 0    indicates to branch in the forward direction</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>                   d == 1    indicates to branch in the reverse direction<br/></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>                   d == 1    indicates to branch in the reverse direction<br/></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>         cccc  <del class="diffchange diffchange-inline">the </del>value to <del class="diffchange diffchange-inline">match to </del>external pins EBCA0-<del class="diffchange diffchange-inline">EBCA4</del><br/></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>         cccc  <ins class="diffchange diffchange-inline">The </ins>value to <ins class="diffchange diffchange-inline">assert on </ins>external pins EBCA0-<ins class="diffchange diffchange-inline">EBCA3.  </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">              The input EBCI determines whether the branch gets taken.</ins><br/></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>         aaaaaaaaaaaaaaaa    indicates the amount of offset</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>         aaaaaaaaaaaaaaaa    indicates the amount of offset</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>See the [[Branch]] opcode family documentation for more information.</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>See the [[Branch]] opcode family documentation for more information.</div></td></tr>
</table>
Mr z
http://wiki.intellivision.us/index.php?title=BEXT&diff=298&oldid=prev
Pingaso at 17:38, 12 January 2005
2005-01-12T17:38:07Z
<p></p>
<p><b>New page</b></p><div>[[Category:CP1610]]<br />
<table border><br />
<tr><td>Instruction Name</td><td>Branch on External</td></tr><br />
<tr><td>Mnemonics</td><td>BEXT</td></tr><br />
<tr><td>CP1610 Clock Cycles</td><td>7 or 9</td></tr><br />
<tr><td>Interruptible</td><td>Yes</td></tr><br />
<tr><td>Opcode Range</td><td>$0210-$21F, $0230-$23F</td></tr><br />
</table><br/><br />
<br />
The Branch on External opcode (BEXT) is a two-decle opcode that is a part of the [[Branch]] family of opcodes. This instruction causes the [[CP1610]] to branch if the external pins EBCA0-EBCA3 match the specified value. If this condition is true, the CP1610 branches to the address specified by the following parameters.<br/><br />
<br />
Format - Decle #1 Format - Word #2 (Unknown if all 16 bits are significant)<br />
0000:0010:00d1:cccc aaaa:aaaa:aaaa:aaaa<br/><br />
where:<br/><br />
d indicates the direction of the branch<br />
such that:<br />
d == 0 indicates to branch in the forward direction<br />
d == 1 indicates to branch in the reverse direction<br/><br />
cccc the value to match to external pins EBCA0-EBCA4<br/><br />
aaaaaaaaaaaaaaaa indicates the amount of offset<br />
<br />
See the [[Branch]] opcode family documentation for more information.</div>
Pingaso