銆�銆�CISC锛屽叏绋盋omplex Instruction Set Computer锛屽嵆寰�(f霉)闆滄寚浠ょ郴绲�(t菕ng)瑷堢畻姗熴�傛渶鍒�锛屼汉鍊戦噰鐢ㄧ殑鍎�(y艒u)鍖栨柟娉曟槸閫氶亷瑷�(sh猫)缃竴浜涘姛鑳藉京(f霉)闆滅殑鎸囦护锛屾妸涓�浜涘師渚嗙敱杌熶欢瀵︾従(xi脿n)鐨�銆佸父鐢ㄧ殑鍔熻兘鏀圭敤纭欢鐨勬寚浠ょ郴绲�(t菕ng)瀵︾従(xi脿n)锛屼互姝や締鎻愰珮瑷堢畻姗熺殑鍩�(zh铆)琛岄�熷害锛岄�欑ó瑷堢畻姗熺郴绲�(t菕ng)灏辫绋辩偤寰�(f霉)闆滄寚浠ょ郴绲�(t菕ng)瑷堢畻姗熴��
銆�銆�寰�(f霉)闆滄寚浠ょ郴绲�(t菕ng)瑷堢畻姗燂紙ComplexInstructionSetComputer锛夌啊绋�(CISC),鏄竴绋井铏曠悊鍣ㄦ寚浠ら泦鏋舵(g貌u)锛圛SA锛�锛屽井铏曠悊鍣ㄦ槸鑷哄紡瑷堢畻姗熺郴绲�(t菕ng)鐨勫熀鏈檿鐞嗛儴浠�锛屾瘡鍊嬪井铏曠悊鍣ㄧ殑鏍稿績鏄亱琛屾寚浠ょ殑闆昏矾銆傛寚浠ょ敱瀹屾垚浠诲嫏(w霉)鐨勫鍊嬫椹熸墍绲勬垚锛屾妸鏁�(sh霉)鍊煎偝閫侀�插瘎瀛樺櫒鎴栭�茶鐩稿姞閬嬬畻銆傞�欎簺鎸囦护琚ū鐐哄井鐞嗗櫒鐨勫井浠ｇ⒓(microcode)锛屼笉鍚屽埗閫犲晢鐨勫井铏曠悊鍣ㄦ湁涓嶅悓鐨勫井浠ｇ⒓绯荤当(t菕ng)锛屽埗閫犲晢鍙寜鑷繁鐨勬剰鎰夸娇寰唬纰煎仛寰楃啊鍠垨寰�(f霉)闆溿�傛寚浠ょ郴绲�(t菕ng)瓒婅睈瀵�锛屽井铏曠悊鍣ㄧ法绋嬪氨瓒婄啊鍠�锛岀劧鑰�锛屽煼(zh铆)琛岄�熷害涔熺浉鎳�(y墨ng)瓒婃參銆�
銆�銆�1.鎸囦护鏍煎紡涓嶅浐瀹�,鎸囦护鍙暦鍙煭,鎿嶄綔鏁�(sh霉)鍙鍙皯.
銆�銆�2.灏嬪潃鏂瑰紡寰�(f霉)闆滃妯�锛屾搷浣滄暩(sh霉)鍙締鑷瘎瀛樺櫒,涔熷彲渚嗚嚜瀛樺劜鍣�.
銆�銆�3.浣跨敤寰唬纰�,鎸囦护闆嗗彲浠ョ洿鎺ュ湪寰唬纰艰鎲堕珨(姣斾富瑷樻喍楂旂殑閫熷害蹇緢澶�)閲屽煼(zh铆)琛�.
銆�銆�4.鍏佽ū瑷�(sh猫)瑷堝斧瀵︾従(xi脿n)CISC楂旂郴姗熷櫒鐨勫悜涓婄浉瀹�.鏂扮殑绯荤当(t菕ng)鍙互浣跨敤涓�鍊嬪寘鍚棭鏈熺郴绲�(t菕ng)鐨勬寚浠よ秴闆嗗悎.
銆�銆�5.寰▼寮忔寚浠ょ殑鏍煎紡鑸囬珮闅庤獮瑷�鐩稿尮閰�,鍥犺�岀法璀櫒鐨勮ō(sh猫)瑷堣純绨″柈.
銆�銆�6.CPI>5,鎸囦护瓒婂京(f霉)闆�,CPI瓒婂ぇ.
銆�銆�1.鎸囦护浣跨敤闋诲害涓嶅潎琛�."80~20"鐨勭悊璜�,80%鐨勮▓绠椾换鍕�(w霉)鍙渶瑕佽(di脿o)鐢�20%鐨勬寚浠ゅ氨鑳藉畬鎴�; 鎿村厖鐨勫京(f霉)闆滄寚浠ゅ線寰�鏄綆闋诲害鎸囦护.
銆�銆�2.澶ч噺寰�(f霉)闆滄寚浠ょ殑鎺у埗閭忚集涓嶈(gu墨)鏁�.涓嶉仼浜嶸LSI闆嗘垚,寰▼搴忕殑浣跨敤鍙嶈�屽埗绱勪簡閫熷害鎻愰珮.
銆�銆�3.CISC鎸囦护鐨勬牸寮忛暦鐭笉涓�锛岄渶瑕佷笉鍚岀殑鏅傞悩鍛ㄦ湡渚嗗畬鎴�.鍩�(zh铆)琛岃純鎱㈢殑鎸囦护灏囧奖闊挎暣鑷烘鍣ㄧ殑鍩�(zh铆)琛屾晥鐜�.涓嶅埄浜庨噰鐢ㄥ厛閫叉寚浠ょ礆骞惰鎶�琛�(sh霉).
銆�銆�4.杌熺‖鍔熻兘鍒嗛厤锛庡京(f霉)闆滄寚浠ゅ鍔犵‖浠剁殑寰�(f霉)闆滃害锛屼娇鎸囦护鍩�(zh铆)琛屽懆鏈熷ぇ澶у姞闀�锛岀洿鎺ヨí瀛樻鏁�(sh霉)澧炲锛屾暩(sh霉)鎿�(j霉)閲嶅京(f霉)鍒╃敤鐜囦綆
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銆�銆�CISC鏄寚寰�(f霉)闆滄寚浠ょ郴绲�(t菕ng)瑷堢畻姗�(ComplexInstructionSetComputer)銆傞�欓噷鐨勮▓绠楁鎸囦护绯荤当(t菕ng)鎸囩殑鏄▓绠楁鐨勫堡鐨勬鍣ㄦ寚浠�锛屼篃灏辨槸CPU鑳藉鐩存帴璀樺垾鐨勬寚浠�銆傞毃钁楄▓绠楁绯荤当(t菕ng)鐨勫京(f霉)闆�锛岃姹傝▓绠楁鎸囦护绯荤当(t菕ng)鐨勬(g貌u)閫犺兘浣胯▓绠楁鐨勬暣楂旀�ц兘鏇村揩鏇寸┅(w臎n)瀹�銆傛渶鍒�锛屼汉鍊戦噰鐢ㄧ殑鍎�(y艒u)鍖栨柟娉曟槸閫氶亷瑷�(sh猫)缃竴浜涘姛鑳藉京(f霉)闆滅殑鎸囦护锛屾妸涓�浜涘師渚嗙敱杌熶欢瀵︾従(xi脿n)鐨�銆佸父鐢ㄧ殑鍔熻兘鏀圭敤纭欢鐨勬寚浠ょ郴绲�(t菕ng)瀵︾従(xi脿n)锛屼互姝や締鎻愰珮瑷堢畻姗熺殑鍩�(zh铆)琛岄�熷害锛岄�欑ó瑷堢畻姗熺郴绲�(t菕ng)灏辫绋辩偤寰�(f霉)闆滄寚浠ょ郴绲�(t菕ng)瑷堢畻姗�锛屽嵆ComplexInstructionSetComputer锛岀啊绋盋ISC銆傚彟涓�绋劒(y艒u)鍖栨柟娉曟槸鍦�20涓栫磤80骞翠唬鎵嶇櫦(f膩)灞曡捣渚嗙殑锛屽叾鍩烘湰鎬濇兂鏄洝閲忕啊鍖栬▓绠楁鎸囦护鍔熻兘锛屽彧淇濈暀閭ｄ簺鍔熻兘绨″柈銆佽兘鍦ㄤ竴鍊嬬瘈(ji茅)鎷嶅収(n猫i)鍩�(zh铆)琛屽畬鎴愮殑鎸囦护锛岃�屾妸杓冨京(f霉)闆滅殑鍔熻兘鐢ㄤ竴娈靛瓙绋嬪簭渚嗗鐝�(xi脿n)锛岄�欑ó瑷堢畻姗熺郴绲�(t菕ng)灏辫绋辩偤绮剧啊鎸囦护绯荤当(t菕ng)瑷堢畻姗燂紟鍗砇educedInstructionSetComputer锛岀啊绋盧ISC銆俁ISC鎶�琛�(sh霉)鐨勭簿鑿氨鏄�氶亷绨″寲瑷堢畻姗熸寚浠ゅ姛鑳�锛屼娇鎸囦护鐨勫钩鍧囧煼(zh铆)琛屽懆鏈熸笡灏�锛屽緸鑰屾彁楂樿▓绠楁鐨勫伐浣滀富闋伙紝鍚屾檪澶ч噺浣跨敤閫氱敤瀵勫瓨鍣ㄤ締鎻愰珮瀛愮▼搴忓煼(zh铆)琛岀殑閫熷害銆�
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