鍙紪杈戠増
Word
瀹岀編鏍煎紡
寰満鍘熺悊纭欢瀹為獙鎶ュ憡
瀹為獙涓�
I/O
鍦板潃璇戠爜
涓�銆佸疄楠岀洰鐨?/p>
鎺屾彙
I/O
鍦板潃璇戠爜鐢佃矾鐨勫伐浣滃師鐞嗐�?/p>
浜屻�佸疄楠屽師鐞嗗拰鍐呭
1
銆佸疄楠岀數璺鍥?/p>
1-1
鎵�绀猴紝鍏朵腑
74LS74
涓?/p>
D
瑙﹀彂鍣紝鍙洿鎺ヤ娇鐢ㄥ疄楠屽彴涓婃暟瀛楃數璺?/p>
瀹為獙鍖虹殑
D
瑙﹀彂鍣?/p>
,74LS138
涓哄湴鍧�璇戠爜鍣ㄣ�?/p>
璇戠爜杈撳嚭绔?/p>
Y0
锝?/p>
Y7
鍦ㄥ疄楠屽彴涓?/p>
鈥?/p>
I/O
鍦板潃
鈥滆緭
鍑虹寮曞嚭锛屾瘡涓緭鍑虹鍖呭惈
8
涓湴鍧�锛?/p>
Y0
锛?/p>
280H
锝?/p>
287H
锛?/p>
Y1
锛?/p>
288H
锝?/p>
28FH
锛屸�︹�?/p>
褰?/p>
CPU
鎵ц
I/O
鎸囦护涓斿湴鍧�鍦?/p>
280H
锝?/p>
2BFH
鑼冨洿鍐咃紝璇戠爜鍣ㄩ�変腑锛屽繀鏈変竴鏍硅瘧鐮佺嚎杈撳嚭璐熻剦鍐层�?/p>
渚嬪锛氭墽琛屼笅闈袱鏉℃寚浠?/p>
MOV DX
锛?/p>
2A0H
OUT DX
锛?/p>
AL
锛堟垨
IN AL
锛?/p>
DX
锛?/p>
Y4
杈撳嚭涓�涓礋鑴夊啿锛屾墽琛屼笅闈袱鏉℃寚浠?/p>
MOV DX
锛?/p>
2A8H
OUT DX
锛?/p>
AL
锛堟垨
IN AL
锛?/p>
DX
锛?/p>
Y5
杈撳嚭涓�涓礋鑴夊啿銆?/p>
鍒╃敤杩欎釜璐熻剦鍐叉帶鍒?/p>
L7
闂儊鍙戝厜锛堜寒銆佺伃銆佷寒銆佺伃銆佲�︹�︼級锛屾椂闂撮棿闅旈�氳繃杞欢
寤舵椂瀹炵幇銆?/p>
2
銆佹帴绾匡細
Y4/IO
鍦板潃
鎺?/p>
CLK/D
瑙﹀彂鍣?/p>
Y5/IO
鍦板潃
鎺?/p>
CD/D
瑙﹀彂鍣?/p>
D/D
瑙﹀彂鍣?/p>
鎺?/p>
SD/D
瑙掑彂鍣?/p>
鎺?/p>
+5V