{"id":78,"date":"2021-07-10T23:56:38","date_gmt":"2021-07-10T15:56:38","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/hb\/?p=78"},"modified":"2021-07-11T01:29:00","modified_gmt":"2021-07-10T17:29:00","slug":"%e6%b1%87%e7%bc%96-%e4%bd%8d%e8%bf%90%e7%ae%97","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/hb\/post-78.html","title":{"rendered":"\u6c47\u7f16 \u4f4d\u8fd0\u7b97"},"content":{"rendered":"\n<p>\u6c47\u7f16\u53ef\u4ee5\u4f7f\u7528and\u548cor\u7b49\u6307\u4ee4,  \u8fdb\u884c\u4f4d\u8fd0\u7b97<\/p>\n\n\n\n<ul><li>and ==&gt;  \u4f4d\u4e0e<\/li><li>or ==&gt;  \u4f4d\u6216<\/li><li>not ==&gt;  \u6309\u4f4d\u53d6\u53cd<\/li><li>xor ==&gt;  \u6309\u4f4d\u5f02\u6216<\/li><li>shl ==&gt;  \u4f4d\u5de6\u79fb<\/li><li>&#8230;&#8230;<\/li><\/ul>\n\n\n\n<h2>\u4f4d\u8fd0\u7b97\u5b9e\u4f8b<\/h2>\n\n\n\n<p><strong>1.\u4f4d\u4e0e\u8fd0\u7b97\u5b9e\u4f8b<\/strong><\/p>\n\n\n\n<p>\u5c06al\u7684\u7b2c6\u4f4d\u8bbe\u4e3a0:  <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>and al, 10111111B<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u7684\u4f4d\u6570\u4ece0\u5f00\u59cb,  <\/p>\n\n\n\n<p>\u56e0\u4e3a\u4ec5\u67091\u4e0e1\u76f8\u4e0e,  \u7ed3\u679c\u624d\u4e3a1,  \u8fd9\u91cc\u8bbe\u7f6e\u4e3a0,  \u5219\u4e0e\u8fd0\u7b97\u540e\u4e00\u5b9a\u4e3a0<\/p>\n\n\n\n<p><strong>2.\u4f4d\u6216\u8fd0\u7b97\u5b9e\u4f8b<\/strong><\/p>\n\n\n\n<p>\u5c06al\u7684\u7b2c6\u4f4d\u8bbe\u7f6e\u4e3a1:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>or al, 01000000<\/code><\/pre>\n\n\n\n<p>\u7b2c6\u4f4d\u6307\u7684\u662f\u53f3\u8fb9\u4ece0\u5f00\u59cb\u6570\u7684\u7b2c6,  \u628a\u5b83\u8bbe\u7f6e\u4e3a1,  \u5219\u65e0\u8bba\u5b83\u76f8\u6216\u7684\u662f\u4ec0\u4e48\u503c,  \u7ed3\u679c\u90fd\u4e00\u5b9a\u4e3a1<\/p>\n\n\n\n<h2>\u6c47\u7f16\u5b57\u7b26\u8868\u793a<\/h2>\n\n\n\n<p>\u5728\u6c47\u7f16\u4e2d,  \u5b57\u7b26\u7f16\u7801\u652f\u6301\u7684\u662fASCII,  \u800c\u4e0d\u662fgbk,  \u6216\u8005unicode<\/p>\n\n\n\n<p>\u5982\u679c\u60f3\u8868\u793a\u5b57\u7b26a,  \u5219\u5e94\u8be5\u627e\u5230a\u5bf9\u5e94\u7684ASCII\u7f16\u7801\u6570\u503c,  <\/p>\n\n\n\n<p><strong>\u4ee5\u5b57\u7b26\u5f62\u5f0f\u7ed9\u5b9a\u6570\u636e<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>assume ds:data\ndata segment\n    db 'unIX'\n    db 'foRK'\ndata ends\ncode segment\nstart:\n    mov al, 'a'\n    mov ax, 4c00h\n    int 21h\ncode ends\nend start<\/code><\/pre>\n\n\n\n<p>\u5728\u8fd9\u91cc, db\u662f\u5b9a\u4e49\u5b57\u8282\u578b\u6570\u636e,  \u800cASCII\u662f8\u4f4d\u7684,  \u521a\u597d\u5bf9\u5e94\u4e00\u4e2a\u5b57\u8282,  \u4f7f\u7528dw\u4f1a\u6d6a\u8d39<\/p>\n\n\n\n<p>\u5728\u8fd9\u91cc\u7684\u4e00\u4e32\u5b57\u7b26,  \u6bd4\u5982 db &#8216;unIX&#8217;,  \u4f1a\u88ab\u81ea\u52a8\u8f6c\u6362\u4e3a db 75H, 6EH, 49H, 58H,  <\/p>\n\n\n\n<p>\u5728\u7f16\u5199\u4e00\u4e32\u5b57\u7b26\u65f6, \u5e94\u8be5\u4f7f\u7528\u5355\u5f15\u53f7\u62ec\u8d77\u6765, \u82e5\u5199\u7684\u662f16\u8fdb\u5236\u5219\u6ca1\u6709\u8fd9\u4e2a\u5f15\u53f7\u4f46\u6570\u636e\u4e4b\u95f4\u6709\u9017\u53f7<\/p>\n\n\n\n<p><strong>\u5b57\u6bcd\u5927\u5c0f\u5199\u8f6c\u6362<\/strong><\/p>\n\n\n\n<p>\u67e5\u770b\u4e0b\u9762\u7684ASCII\u4e0e\u4e8c\u8fdb\u5236\u6570\u636e\u8868, \u627e\u5230\u5927\u5c0f\u5199\u8f6c\u6362\u89c4\u5f8b<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td>\u5927\u5199<\/td><td>\u4e8c\u8fdb\u5236<\/td><td>\u5c0f\u5199<\/td><td>\u4e8c\u8fdb\u5236<\/td><\/tr><tr><td>A<\/td><td>01<strong>0<\/strong>00001<\/td><td>a<\/td><td>01<strong>1<\/strong>00001<\/td><\/tr><tr><td>B<\/td><td>01<strong>0<\/strong>00010<\/td><td>b<\/td><td>01<strong>1<\/strong>00010<\/td><\/tr><tr><td>&#8230;<\/td><td>&#8230;<\/td><td>&#8230;<\/td><td>&#8230;<\/td><\/tr><tr><td>Z<\/td><td>01<strong>0<\/strong>11010<\/td><td>z<\/td><td>01<strong>1<\/strong>11010<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u8868\u4e2d,  \u53d1\u73b0\u5927\u5199\u4e0e\u5c0f\u5199\u4e4b\u95f4,  \u4ec5\u6709\u7b2c5\u4f4d\u4e0d\u540c,  \u5927\u5199\u4e3a0,  \u5c0f\u5199\u4e3a1<\/p>\n\n\n\n<p>\u6211\u4eec\u5229\u7528and, or\u6307\u4ee4\u5c31\u53ef\u4ee5\u5b8c\u6210\u5bf9\u5927\u5c0f\u5199\u7684\u8f6c\u6362<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>assume cs:code, ds:data\n\ndata segment\n    db 'BaSiC'\n    db 'iNfOrMaTiOn'\n    db '$'\ndata ends\n\ncode segment\nstart:\n    mov ax, data    ; \u628aax\u6307\u5411data\u6bb5\u5730\u5740\n    mov ds, ax\n    mov bx, 0       ; \u6307\u5411\u7b2c\u4e00\u4e2a\u5b57\u7b26\n    mov cx, 5       ; \u56e0\u4e3a\u67095\u4e2a\u5b57\u6bcd, \u5faa\u73af5\u6b21\n    s:\n        mov al, &#91;bx]\n        and al, 11011111b  ; \u628a\u7b2c5\u4f4d\u8f6c\u8bbe\u7f6e\u4e3a0, \u53d8\u4e3a\u5927\u5199\n        mov &#91;bx], al\n        inc bx       ; bx+1, \u6307\u5411\u4e0b\u4e00\u4e2a\u5b57\u7b26\n        loop s\n    mov bx, 5       ; \u6307\u5411\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u4e32\u7684\u7b2c\u4e00\u4e2a\u5b57\u6bcd,\n    mov cx, 11      ; \u56e0\u4e3a\u670911\u4e2a\u5b57\u6bcd\n    s0:\n        mov al, &#91;bx]\n        or al, 00100000b   ; \u53d8\u4e3a\u5c0f\u5199\n        mov &#91;bx], al\n        inc bx\n        loop s0\n    lea dx, ds:&#91;0]\n    mov ax, 0900h\n    int 21h\n    mov ax, 4c00h\n    int 21h\ncode ends\nend start<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8ff0\u4ee3\u7801,  \u5b9e\u73b0\u4e86\u5c06\u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e32\u5168\u90e8\u5927\u5199,  \u7b2c\u4e8c\u4e2a\u5b57\u7b26\u4e32\u5168\u90e8\u5c0f\u5199,  <\/p>\n\n\n\n<p>\u5728\u6b64\u7a0b\u5e8f\u4e2d,  inc bx\u662f\u5c06bx\u7684\u503c\u81ea\u589e1,  \u6b64\u5916, \u8fd9\u4e2a\u7a0b\u5e8f\u9700\u8981\u4e25\u683c\u8ba1\u7b97\u5b57\u7b26\u4e32\u7684\u957f\u5ea6,    \u5728ds\u4e2d\u5b58\u653e\u7684\u5185\u5b58\u5730\u5740,  \u4ece0\u5f00\u59cb,  \u800cdb\u662f\u4e00\u4e2a\u5b57\u8282,  \u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e32\u957f\u5ea6\u4e3a5,  \u6240\u4ee5\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u4e32\u662f\u4ee55\u5f00\u59cb  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6c47\u7f16\u53ef\u4ee5\u4f7f\u7528and\u548cor\u7b49\u6307\u4ee4, \u8fdb\u884c\u4f4d\u8fd0\u7b97 and ==&gt; \u4f4d\u4e0e or ==&gt; \u4f4d\u6216 not =&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/hb\/post-78.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">\u6c47\u7f16 \u4f4d\u8fd0\u7b97<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/posts\/78"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/comments?post=78"}],"version-history":[{"count":1,"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/posts\/78\/revisions"}],"predecessor-version":[{"id":79,"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/posts\/78\/revisions\/79"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/media?parent=78"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/categories?post=78"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/hb\/wp-json\/wp\/v2\/tags?post=78"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}