提交 d37fa752 创建 作者: 李川's avatar 李川

Merge branch 'simplified-8259' into 'master'

简化8259芯片原理图 See merge request engintime/Dream-Logic/Intel-classic-chips/8259A!6
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...@@ -2,35 +2,15 @@ ...@@ -2,35 +2,15 @@
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......
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="371" y="1846">IRR5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="818" y="1786">D0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="754" y="1785">10</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="818" y="1817">D1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="754" y="1815">11</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="818" y="1847">D2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="754" y="1845">12</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="818" y="1877">D3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="754" y="1875">13</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="819" y="1907">D4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="740" y="1904">1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="819" y="1939">D5</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="740" y="1934">2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="818" y="1968">D6</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="831" y="2026">^EI</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1936">EO</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1906">GS</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="938" y="1906">14</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1846">A2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1816">A1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1786">A0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="951" y="1785">9</text>
<circle cx="765" cy="1786" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="765" cy="1816" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="836" y="1748">U15</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="774" y="2105">74LS148D</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="811" x2="771" y1="836" y2="836"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="836">D0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="804" y="835">10</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="867">D1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="804" y="865">11</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="897">D2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="804" y="895">12</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="927">D3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="804" y="925">13</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="869" y="957">D4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="954">1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="869" y="989">D5</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="984">2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="1018">D6</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="1014">3</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="1049">D7</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="1044">4</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="881" y="1076">^EI</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="1074">5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="986">EO</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="988" y="986">15</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="971" x2="1021" y1="956" y2="956"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="956">GS</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="988" y="956">14</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="896">A2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1001" y="895">6</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="866">A1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1001" y="865">7</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="836">A0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1001" y="835">9</text>
<circle cx="815" cy="836" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="815" cy="866" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="886" y="798">U7</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="824" y="1155">74LS148D</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1930">U18</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="2062">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="1010">U19</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1142">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="661" x2="721" y1="1786" y2="1786"/>
<circle cx="657" cy="1786" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<polygon fill="#ffffff" fill-opacity="0.5" points="581 1736, 581 1836, 651 1786, 581 1736" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1750">U21</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1882">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="581" x2="521" y1="1816" y2="1816"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="661" x2="721" y1="1816" y2="1816"/>
<circle cx="657" cy="1816" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<polygon fill="#ffffff" fill-opacity="0.5" points="581 1766, 581 1866, 651 1816, 581 1766" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1780">U22</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1912">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="581" x2="521" y1="1846" y2="1846"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="661" x2="721" y1="1846" y2="1846"/>
<circle cx="657" cy="1846" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1810">U23</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1942">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="581" x2="521" y1="1876" y2="1876"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="661" x2="721" y1="1876" y2="1876"/>
<circle cx="657" cy="1876" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1840">U24</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1972">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="581" x2="521" y1="1906" y2="1906"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="661" x2="721" y1="1906" y2="1906"/>
<circle cx="657" cy="1906" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<polygon fill="#ffffff" fill-opacity="0.5" points="581 1856, 581 1956, 651 1906, 581 1856" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="836">D0</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="896">A2</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1142">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1882">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1912">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1942">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1840">U24</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1972">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1870">U25</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="2002">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1900">U26</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="2032">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" transform="rotate(-90 1217 1476)" x="1217" y="1476">NOT</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="661" y="2176">GS=0表示有外部中断请求</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="微软雅黑" font-size="250" font-weight="700" text-anchor="start" x="991" y="296">PR2</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="461" y="666">U1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="381" y="696">CONSTANT1</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="571" y="796">H</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1381" y="1736">NBUFFER</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1381" y="1896">NBUFFER</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1381" y="2096">NBUFFER</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="833">D0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="804" y="832">10</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="864">D1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="894">D2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="869" y="986">D5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="1015">D6</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="1046">D7</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="881" y="1073">^EI</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1139">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1747">U21</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1879">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1777">U22</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1969">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="917">U25</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1049">NOT</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="818" y="1783">D0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="754" y="1782">10</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="818" y="1814">D1</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="754" y="1842">12</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="819" y="1904">D4</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="819" y="1936">D5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1903">GS</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="938" y="1903">14</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1843">A2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1813">A1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="888" y="1783">A0</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="836" y="1745">U15</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="774" y="2102">74LS148D</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="833">D0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="804" y="832">10</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="864">D1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="804" y="862">11</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="894">D2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="804" y="892">12</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="869" y="954">D4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="951">1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="869" y="986">D5</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="981">2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="1015">D6</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="1011">3</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="868" y="1046">D7</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="1041">4</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="881" y="1073">^EI</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="790" y="1071">5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="983">EO</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="988" y="983">15</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="953">GS</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="988" y="953">14</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="893">A2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1001" y="892">6</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="863">A1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1001" y="862">7</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="938" y="833">A0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1001" y="832">9</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="886" y="795">U7</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="824" y="1152">74LS148D</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="977">U18</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1109">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="711" x2="771" y1="1043" y2="1043"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="1007">U19</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1139">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="661" x2="721" y1="1783" y2="1783"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1747">U21</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1879">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="711" x2="771" y1="863" y2="863"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="827">U22</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="959">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="711" x2="771" y1="893" y2="893"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="857">U23</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="989">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="711" x2="771" y1="923" y2="923"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="887">U24</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1019">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="631" x2="571" y1="953" y2="953"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="711" x2="771" y1="953" y2="953"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="917">U25</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1049">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="631" x2="571" y1="983" y2="983"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="711" x2="771" y1="983" y2="983"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="651" y="947">U26</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="631" y="1079">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1121" x2="1121" y1="1473" y2="1533"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1121" x2="1121" y1="1393" y2="1333"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" transform="rotate(-90 1217 1473)" x="1217" y="1473">NOT</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="661" y="2173">GS=0表示有外部中断请求</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="微软雅黑" font-size="250" font-weight="700" text-anchor="start" x="991" y="293">PR7</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="60" font-weight="700" text-anchor="start" x="971" y="423">7级中断优先级最高</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1751" y="1786">2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1887" y="1476">OALTB</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1887" y="1446">OAEQB</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2431" y="748">U9</text>
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<polyline fill="none" points="2785 949, 2843 949" stroke="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2835" y="849">U10</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2823" y="1000">OR</text>
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<polyline fill="none" points="2580 1006, 2730 1006, 2730 936" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="2980 906, 3230 906" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
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<text alignment-baseline="central" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="3480" y="936">INT</text>
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<circle cx="666" cy="1416" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1380">U11</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1512">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="670" x2="730" y1="1446" y2="1446"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1410">U12</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1542">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="670" x2="730" y1="1476" y2="1476"/>
<circle cx="666" cy="1476" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1440">U13</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1572">NOT</text>
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<circle cx="666" cy="1506" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1470">U14</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1602">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1632">NOT</text>
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<circle cx="666" cy="1566" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1530">U17</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1662">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="670" x2="730" y1="1596" y2="1596"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1560">U18</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1692">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="670" x2="730" y1="1626" y2="1626"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1590">U19</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1722">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="670" x2="730" y1="1816" y2="1816"/>
<circle cx="666" cy="1816" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1780">U21</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1912">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="670" x2="730" y1="1846" y2="1846"/>
<circle cx="666" cy="1846" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1810">U22</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="1942">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="670" x2="730" y1="1876" y2="1876"/>
<circle cx="666" cy="1876" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1840">U23</text>
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<circle cx="666" cy="1906" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1870">U24</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="2002">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="670" x2="730" y1="1936" y2="1936"/>
<circle cx="666" cy="1936" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="610" y="1900">U25</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="2032">NOT</text>
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<circle cx="666" cy="1966" fill="none" r="5" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="2062">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="590" y="2092">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="3290" x2="3230" y1="966" y2="966"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="3420" x2="3480" y1="936" y2="936"/>
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<polyline fill="none" points="3369 978, 3290 978, 3290 884, 3369 884" stroke="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="3331" y="878">U2</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1190" y="2472">NOT</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="990" y="1926">GS=0表示有外部中断请求</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="微软雅黑" font-size="250" font-weight="700" text-anchor="start" x="0" y="316">PR-普通EOI方式优先级判别器</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="2130" y="1676">AGTB AEQB ALTB OAGTB OAEQB OALTB</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2090" y="1572">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="2330" x2="2330" y1="1186" y2="1126"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" transform="rotate(-90 2418 1292)" x="2418" y="1292">AND</text>
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<polyline fill="none" points="1980 1416, 2300 1416, 2300 1376" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="2340" y="1166">A&gt;B,全嵌套方式下有更高优先级的中断请求</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="2130" y="1626">A=B时输入输出逻辑关系</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="1710" y="826">A&gt;=B,特殊全嵌套有更高优先级中断请求</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="60" font-weight="700" text-anchor="start" x="520" y="476">适用于全嵌套或特殊全嵌套方式,固定优先级,0级中断优先级最高</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="1248" y="1889">GS=0表示有外部中断请求</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1085" y="1215">D0</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1085" y="1276">D2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1021" y="1274">12</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1085" y="1306">D3</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1086" y="1336">D4</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1086" y="1368">D5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1085" y="1397">D6</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1085" y="1428">D7</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1155" y="1365">EO</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1155" y="1335">GS</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2081" y="1215">A3</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2081" y="1245">B3</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2081" y="1275">A2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2081" y="1305">B2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2081" y="1365">A1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2081" y="1395">B1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2081" y="1425">A0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2023" y="1425">10</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2081" y="1455">B0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="2009" y="1456">9</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="928" x2="988" y1="1615" y2="1615"/>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="928" x2="988" y1="1675" y2="1675"/>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="2388" y="1475">AGTB AEQB ALTB OAGTB OAEQB OALTB</text>
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# 说明 # 说明
Intel 8259A 可编程中断控制器 Intel 8259A 简化版可编程中断控制器
# Datasheet \ No newline at end of file
[8259A.pdf](8259A.pdf)
# 原理图
![raw svg](8259A.dlsche.svg)
\ No newline at end of file
没有这种文件类型的预览
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没有这种文件类型的预览
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="309" y="635">自动中断结束方式不支持中断嵌套,也就是说,任何时刻中断服务寄存器中只有一位为1</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="421" y="435">8259A设置为全嵌套或者特殊全嵌套方式,0级中断优先级最高,7级中断优先级最低</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1417" y="1764">G1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1398" y="1725">C</text>
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没有这种文件类型的预览
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没有这种文件类型的预览
这个 源代码变更 因为 太大 而不能显示。 你可以 浏览blob
没有这种文件类型的预览
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