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銆�銆�浣跨敤瑭叉(bi膩o)蹇椾綅鐨勬儏娉佹湁锛氬瀛�(瀛楃瘈(ji茅))鏁�(sh霉)鐨勫姞娓涢亱绠�锛岀劇绗﹁櫉鏁�(sh霉)鐨勫ぇ灏忔瘮杓冮亱绠�锛岀Щ浣嶆搷浣�锛屽瓧(瀛楃瘈(ji茅))涔嬮枔绉讳綅锛屽皥闁�鏀硅畩CF鍊肩殑鎸囦护绛�銆�
銆�銆�2銆佸鍋舵(bi膩o)蹇桺F(Parity Flag)
銆�銆�濂囧伓妯�(bi膩o)蹇桺F鐢ㄤ簬鍙嶆槧閬嬬畻绲�(ji茅)鏋滀腑鈥�1鈥濈殑鍊嬫暩(sh霉)鐨勫鍋舵��銆傚鏋溾��1鈥濈殑鍊嬫暩(sh霉)鐐哄伓鏁�(sh霉)锛屽墖PF鐨勫�肩偤1锛屽惁鍓囧叾鍊肩偤0銆�
銆�銆�鍒╃敤PF鍙��(j矛n)琛屽鍋舵牎椹楁鏌ワ紝鎴栫敘(ch菐n)鐢熷鍋舵牎椹椾綅銆傚湪鏁�(sh霉)鎿�(j霉)鍌抽�侀亷绋嬩腑锛岀偤浜嗘彁渚涘偝閫佺殑鍙潬鎬э紝濡傛灉閲囩敤濂囧伓鏍￠鐨勬柟娉�锛屽氨鍙娇鐢ㄨ┎妯�(bi膩o)蹇椾綅銆�
銆�銆�3銆佽紨鍔╅��(j矛n)浣嶆(bi膩o)蹇桝F(Auxiliary Carry Flag)
銆�銆�鍦ㄧ櫦(f膩)鐢熶笅鍒楁儏娉佹檪锛岃紨鍔╅��(j矛n)浣嶆(bi膩o)蹇桝F鐨勫�艰缃偤1锛屽惁鍓囧叾鍊肩偤0锛�
銆�銆�(1)銆佸湪瀛楁搷浣滄檪锛岀櫦(f膩)鐢熶綆瀛楃瘈(ji茅)鍚戦珮瀛楃瘈(ji茅)閫�(j矛n)浣嶆垨鍊熶綅鏅�锛�
銆�銆�(2)銆佸湪瀛楃瘈(ji茅)鎿嶄綔鏅傦紝鐧�(f膩)鐢熶綆4浣嶅悜楂�4浣嶉��(j矛n)浣嶆垨鍊熶綅鏅�銆�
銆�銆�灏嶄互涓�6鍊嬮亱绠楃祼(ji茅)鏋滄(bi膩o)蹇椾綅锛屽湪涓�鑸法绋嬫儏娉佷笅锛屾(bi膩o)蹇椾綅CF銆乑F銆丼F鍜孫F鐨勪娇鐢ㄩ牷鐜囪純楂�锛岃�屾(bi膩o)蹇椾綅PF鍜孉F鐨勪娇鐢ㄩ牷鐜囪純浣庛��
銆�銆�4銆侀浂妯�(bi膩o)蹇梈F(Zero Flag)
銆�銆�闆舵(bi膩o)蹇梈F鐢ㄤ締鍙嶆槧閬嬬畻绲�(ji茅)鏋滄槸鍚︾偤0銆傚鏋滈亱绠楃祼(ji茅)鏋滅偤0锛屽墖鍏跺�肩偤1锛屽惁鍓囧叾鍊肩偤0銆傚湪鍒ゆ柗閬嬬畻绲�(ji茅)鏋滄槸鍚︾偤0鏅傦紝鍙娇鐢ㄦ妯�(bi膩o)蹇椾綅銆�
銆�銆�5銆佺铏熸(bi膩o)蹇桽F(Sign Flag)
銆�銆�绗﹁櫉妯�(bi膩o)蹇桽F鐢ㄤ締鍙嶆槧閬嬬畻绲�(ji茅)鏋滅殑绗﹁櫉浣�锛屽畠鑸囬亱绠楃祼(ji茅)鏋滅殑浣嶇浉鍚�銆傚湪寰(j墨)绯荤当(t菕ng)涓紝鏈夌铏熸暩(sh霉)閲囩敤瑁�(b菙)纰艰〃绀烘硶锛屾墍浠�锛孲F涔熷氨鍙嶆槧閬嬬畻绲�(ji茅)鏋滅殑姝ｈ矤(f霉)铏�銆傞亱绠楃祼(ji茅)鏋滅偤姝ｆ暩(sh霉)鏅�锛孲F鐨勫�肩偤0锛屽惁鍓囧叾鍊肩偤1銆�
銆�銆�6銆佹孩鍑烘(bi膩o)蹇桹F(Overflow Flag)
銆�銆�婧㈠嚭妯�(bi膩o)蹇桹F鐢ㄤ簬鍙嶆槧鏈夌铏熸暩(sh霉)鍔犳笡閬嬬畻鎵�寰楃祼(ji茅)鏋滄槸鍚︽孩鍑�銆傚鏋滈亱绠楃祼(ji茅)鏋滆秴閬庣暥(d膩ng)鍓嶉亱绠椾綅鏁�(sh霉)鎵�鑳借〃绀虹殑鑼冨湇锛屽墖绋辩偤婧㈠嚭锛孫F鐨勫�艰缃偤1锛屽惁鍓囷紝OF鐨勫�艰娓呯偤0銆�
銆�銆�鈥滄孩鍑衡�濆拰鈥滈��(j矛n)浣嶁�濇槸鍏╁�嬩笉鍚屽惈缇╃殑姒傚康锛屼笉瑕佹贩娣�銆傚鏋滀笉澶竻妤氱殑瑭�锛岃珛鏌ラ柋銆婅▓绠楁(j墨)绲勬垚鍘熺悊銆嬭绋嬩腑鐨勬湁闂�(gu膩n)绔犵瘈(ji茅)銆�
銆�銆�浜�銆佺媭鎱�(t脿i)鎺у埗妯�(bi膩o)蹇椾綅
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銆�銆�1銆佽拷韫ゆ(bi膩o)蹇桾F(Trap Flag)
銆�銆�鐣�(d膩ng)杩借工妯�(bi膩o)蹇桾F琚疆鐐�1鏅�锛孋PU閫�(j矛n)鍏ュ柈姝ュ煼(zh铆)琛屾柟寮�锛屽嵆姣忓煼(zh铆)琛屼竴姊濇寚浠�锛岀敘(ch菐n)鐢熶竴鍊嬪柈姝ヤ腑鏂疯珛姹傘�傞�欑ó鏂瑰紡涓昏鐢ㄤ簬绋嬪簭鐨勮(di脿o)瑭�銆�
銆�銆�鎸囦护绯荤当(t菕ng)涓矑鏈夊皥闁�鐨勬寚浠や締鏀硅畩妯�(bi膩o)蹇椾綅TF鐨勫��锛屼絾绋嬪簭鍝″彲鐢ㄥ叾瀹冭睛娉曚締鏀硅畩鍏跺�笺��
銆�銆�2銆佷腑鏂峰厑瑷辨(bi膩o)蹇桰F(Interrupt-enable Flag)
銆�銆�涓柗鍏佽ū妯�(bi膩o)蹇桰F鏄敤渚嗘焙瀹欳PU鏄惁闊挎噳(y墨ng)CPU澶栭儴鐨勫彲灞忚斀涓柗鐧�(f膩)鍑虹殑涓柗璜嬫眰銆備絾涓嶇瑭叉(bi膩o)蹇楃偤浣曞��锛孋PU閮藉繀闋堥熆鎳�(y墨ng)CPU澶栭儴鐨勪笉鍙睆钄戒腑鏂锋墍鐧�(f膩)鍑虹殑涓柗璜嬫眰锛屼互鍙奀PU鍏�(n猫i)閮ㄧ敘(ch菐n)鐢熺殑涓柗璜嬫眰銆傚叿楂旇(gu墨)瀹氬涓嬶細
銆�銆�(1)銆佺暥(d膩ng)IF=1鏅�锛孋PU鍙互闊挎噳(y墨ng)CPU澶栭儴鐨勫彲灞忚斀涓柗鐧�(f膩)鍑虹殑涓柗璜嬫眰锛�
銆�銆�(2)銆佺暥(d膩ng)IF=0鏅�锛孋PU涓嶉熆鎳�(y墨ng)CPU澶栭儴鐨勫彲灞忚斀涓柗鐧�(f膩)鍑虹殑涓柗璜嬫眰銆�
銆�銆�CPU鐨勬寚浠ょ郴绲�(t菕ng)涓篃鏈夊皥闁�鐨勬寚浠や締鏀硅畩妯�(bi膩o)蹇椾綅IF鐨勫��銆�
銆�銆�3銆佹柟鍚戞(bi膩o)蹇桪F(Direction Flag)
銆�銆�鏂瑰悜妯�(bi膩o)蹇桪F鐢ㄤ締姹哄畾鍦ㄤ覆鎿嶄綔鎸囦护鍩�(zh铆)琛屾檪鏈夐棞(gu膩n)鎸囬嚌瀵勫瓨鍣ㄧ櫦(f膩)鐢熻(di脿o)鏁寸殑鏂瑰悜銆傚叿楂旇(gu墨)瀹氬湪绗�5.2.11绡�(ji茅)鈥斺�斿瓧绗︿覆鎿嶄綔鎸囦护鈥斺�斾腑绲﹀嚭銆傚湪寰(j墨)鐨勬寚浠ょ郴绲�(t菕ng)涓�锛岄倓鎻愪緵浜嗗皥闁�鐨勬寚浠や締鏀硅畩妯�(bi膩o)蹇椾綅DF鐨勫�笺��
銆�銆�涓�銆�32浣嶆(bi膩o)蹇楀瘎瀛樺櫒澧炲姞鐨勬(bi膩o)蹇椾綅
銆�銆�1銆両/O鐗规瑠(qu谩n)妯�(bi膩o)蹇桰OPL(I/O Privilege Level)
銆�銆�I/O鐗规瑠(qu谩n)妯�(bi膩o)蹇楃敤鍏╀綅浜岄��(j矛n)鍒朵綅渚嗚〃绀�锛屼篃绋辩偤I/O鐗规瑠(qu谩n)绱氬瓧娈点�傝┎瀛楁鎸囧畾浜嗚姹傚煼(zh铆)琛孖/O鎸囦护鐨勭壒娆�(qu谩n)绱�銆傚鏋滅暥(d膩ng)鍓嶇殑鐗规瑠(qu谩n)绱氬垾鍦ㄦ暩(sh霉)鍊间笂灏忎簬绛変簬IOPL鐨勫�硷紝閭ｄ箞锛岃┎I/O鎸囦护鍙煼(zh铆)琛岋紝鍚﹀墖灏囩櫦(f膩)鐢熶竴鍊嬩繚璀�(h霉)鐣板父銆�
銆�銆�2銆佸祵濂椾换鍕�(w霉)妯�(bi膩o)蹇桸T(Nested Task)
銆�銆�宓屽浠诲嫏(w霉)妯�(bi膩o)蹇桸T鐢ㄤ締鎺у埗涓柗杩斿洖鎸囦护I(l菒ng)RET鐨勫煼(zh铆)琛屻�傚叿楂旇(gu墨)瀹氬涓嬶細
銆�銆�(1)銆佺暥(d膩ng)NT=0锛岀敤鍫嗘＇涓繚瀛樼殑鍊兼仮寰�(f霉)EFLAGS銆丆S鍜孍IP锛屽煼(zh铆)琛屽父瑕�(gu墨)鐨勪腑鏂疯繑鍥炴搷浣�锛�
銆�銆�(2)銆佺暥(d膩ng)NT=1锛岄�氶亷浠诲嫏(w霉)杞�(zhu菐n)鎻涘鐝�(xi脿n)涓柗杩斿洖銆�
銆�銆�3銆侀噸鍟熷嫊妯�(bi膩o)蹇桼F(Restart Flag)
銆�銆�閲嶅暉鍕曟(bi膩o)蹇桼F鐢ㄤ締鎺у埗鏄惁鎺ュ彈瑾�(di脿o)瑭︽晠闅�銆傝(gu墨)瀹氾細RF=0鏅�锛岃〃绀衡�滄帴鍙椻�濊(di脿o)瑭︽晠闅�锛屽惁鍓囨嫆绲曚箣銆傚湪鎴愬姛鍩�(zh铆)琛屽畬涓�姊濇寚浠ゅ悗锛岃檿鐞嗘(j墨)鎶奟F缃偤0锛岀暥(d膩ng)鎺ュ彈鍒颁竴鍊嬮潪瑾�(di脿o)瑭︽晠闅滄檪锛岃檿鐞嗘(j墨)灏辨妸瀹冪疆鐐�1銆�
銆�銆�4銆佽櫅鎿�8086鏂瑰紡妯�(bi膩o)蹇梀M(Virtual 8086 Mode)
銆�銆�濡傛灉瑭叉(bi膩o)蹇楃殑鍊肩偤1锛屽墖琛ㄧず铏曠悊姗�(j墨)铏曚簬铏涙摤鐨�8086鏂瑰紡涓嬬殑宸ヤ綔鐙�鎱�(t脿i)锛屽惁鍓�锛岃檿鐞嗘(j墨)铏曚簬涓�鑸繚璀�(h霉)鏂瑰紡涓嬬殑宸ヤ綔鐙�鎱�(t脿i)銆�

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