銆婂井鏈哄師鐞嗕笌鎺ュ彛鎶�鏈�嬬鍏珷浣滀笟
涓�銆?/p>
P207:
1
锛?/p>
3
锛?/p>
5
锛?/p>
10
锛?/p>
14
18
锛?/p>
19
锛?/p>
20
1
銆佷粈涔堝彨涓柇
?
涓柇绯荤粺鐨勪富瑕佸姛鑳芥湁鍝簺锛?/p>
涓柇锛氭槸鎸?/p>
CPU
鍦ㄦ墽琛岀▼搴忕殑杩囩▼涓紝鐢变簬鏌愮澶栭儴鎴栧唴閮ㄤ簨浠剁殑浣滅敤锛屽己杩?/p>
CPU
鍋滄褰撳墠姝ｅ湪鎵ц鐨勭▼搴忥紝杞幓涓鸿浜嬩欢鏈嶅姟锛屽緟浜嬩欢鏈嶅姟缁撴潫鍚庯紝鑳借嚜鍔ㄥ湴杩斿洖鍒拌
涓柇鐨勭▼搴忎腑缁х画鎵ц銆?/p>
涓柇绯荤粺鐨勫姛鑳斤細
1
銆佽缃腑鏂簮
2
銆佷腑鏂簮璇嗗埆
3
銆佷腑鏂簮鍒や紭
4
銆佷腑鏂笌杩斿洖
3
銆?/p>
CPU
鍝嶅簲涓柇鏃剁殑澶勭悊杩囩▼鏄粈涔堬紵鍦ㄥ悇涓鐞嗙幆鑺備富瑕佸畬鎴愬摢浜涙搷浣滐紵
杩囩▼鏄細涓柇璇锋眰銆佷腑鏂搷搴斻�佷腑鏂鐞嗗拰涓柇杩斿洖銆?/p>
锛?/p>
1
锛変腑鏂姹傦細涓柇婧愰渶瑕佽繘琛屼腑鏂湇鍔℃椂锛岀敱纭欢浜х敓涓�涓腑鏂俊鍙?/p>
INTR
鍙戠粰
CPU
涓?/p>
淇濇寔鍒?/p>
CPU
鍝嶅簲銆?/p>
锛?/p>
2
锛変腑鏂搷搴旓細
CPU
鍦ㄥ綋鍓嶆寚浠ゆ墽琛岀粨鏉熷悗閲囨牱鏌ヨ
INTR
锛岃嫢涓柇璇锋眰淇″彿鏈夋晥涓斿厑璁?/p>
鍝嶅簲
INTR
涓柇锛?/p>
IF=1
锛?/p>
锛屽垯鍚戣姹傝澶囬�佸洖浣庣數骞虫湁鏁堢殑涓柇鍝嶅簲淇″彿
INTR
,
鑷绯荤粺鑷?/p>
鍔ㄨ繘鍏ヤ腑鏂搷搴斿懆鏈燂紝骞剁敱纭欢鑷姩瀹屾垚鍐呭鍏ユ爤锛屾竻闄?/p>
TF
鍜?/p>
IF
鏍囧織銆佹柇鐐瑰叆鏍堬紝鍙栦腑
鏂湇鍔＄▼搴忕殑鍏ュ彛鍦板潃绛変竴绯诲垪鎿嶄綔锛岀户鑰岃浆鍘绘墽琛屼腑鏂湇鍔＄▼搴忋�?/p>
锛?/p>
3
锛変腑鏂鐞嗭細鎵ц涓柇鐨勪富浣撻儴鍒嗐�備笉鍚岀殑涓柇璇锋眰婧愶紝鍏朵腑鏂鐞嗙殑鍐呭鏄笉鍚岀殑銆?/p>
闇�瑕佹牴鎹腑鏂姹傛簮鎵�瑕佸畬鎴愮殑鍔熻兘锛?/p>
缂栧啓鐩稿簲鐨勪腑鏂湇鍔＄▼搴忓瓨鍏ュ唴瀛樸�?/p>
绛夊緟涓柇鍝嶅簲鍚?/p>
璋冪敤鎵ц銆?/p>
锛?/p>
4
锛変腑鏂繑鍥烇細鍙堜腑鏂湇鍔＄▼搴忎腑鐨勪腑鏂繑鍥炴寚浠?/p>
IRET
瀹屾垚銆傛墽琛岃鎸囦护鏃讹紝灏嗗帇鍏ュ
鎴樼殑鏂偣鍜屾爣蹇椾綅寮瑰嚭锛屼娇
CPU
杞悜琚腑鏂殑鐜拌绋嬪簭涓户缁墽琛屻�?/p>
5
銆佷腑鏂厑璁告爣蹇?/p>
IF
鐨勪綔鐢ㄦ槸浠�涔?/p>
?
鍙互鐢ㄤ粈涔堟寚浠ゅ瀹冪疆
1
鎴栨竻
0
銆?/p>
IF
鐢ㄦ潵鎺у埗
INTR
鍜屽崟姝ヤ腑鏂�?/p>
IF=1
鍏佽涓柇
IF=0
涓嶅厑璁镐腑鏂?/p>
STI
锛?/p>
IF=1
CLI
锛?/p>
IF=0
10
銆佷腑鏂悜閲忚〃鐢ㄦ潵瀛樻斁浠�涔堝唴瀹癸紵瀹冨崰鐢ㄥ澶х殑瀛樺偍绌洪棿锛熷瓨鏀惧湪鍐呭瓨鐨勫摢涓尯鍩燂紵鍙?/p>
浠ョ敤浠�涔堟柟娉曞啓鍏ユ垨鑰呰鍙栦腑鏂悜閲忚〃鐨勫唴瀹癸紵
涓柇鍚戦噺琛ㄥ瓨鏀句腑鏂悜閲忥紝鍗充腑鏂湇鍔＄▼搴忕殑娈靛熀鍧�
+
鍋忕Щ鍦板潃銆?/p>
涓柇鍚戦噺琛ㄥ崰
1KB
鍐呭瓨
RAM
鍖猴紝鍦板潃鑼冨洿锛?/p>
000H
鈥?/p>
3FFH
銆?/p>
鍐欏叆鏂规硶锛?/p>
1
銆佺敤浼犻�佹寚浠ょ洿鎺ヨ鍏?/p>
2
銆?/p>
DOS
鍔熻兘璋冪敤锛?/p>
INT 21H
锛?/p>
AH
锛?/p>
=25H