有个微机原理和汇编的题，大家帮我看看！有关确定8255的端口地址的问题！ 微机原理8255A的端口地址确定？？

\u4e00\u4e2a\u5173\u4e8e\u5fae\u673a\u539f\u74068255A\u7684\u9898\uff0c\u5728\u7ebf\u7b49\u7b54\u6848\uff01\uff01

;
MOV AL, 1000 0000B ;\u63a7\u5236\u5b57
OUT 0D6H, AL ;\u521d\u59cb\u5316

MOV AL, 00H ;\u5168\u96f6
OUT 0D0H, AL ;\u5f00\u59cb\u65f6\u5168\u706d
CALL DELAY1

MOV AH, 10
LP0:
MOV AL, 01H ;\u6709\u4e00\u4f4d\u662f\u9ad8\u7535\u5e73
MOV CX, 8
LP1:

OUT 0D0H, AL ;\u8f93\u51fa\u5230PA
CALL DELAY1 ;\u5ef6\u65f6
SHL AL ;\u5de6\u79fb\u4e00\u4f4d
LOOP LP1 ;\u5faa\u73af8\u6b21
MOV AL, 00H
OUT 0D0H, AL ;\u5168\u706d
CALL DELAY1

DEC AH
CMP AH, 0
JNE LP0 ;\u4e0d\u523010\u904d\u5219\u5faa\u73af

HLT ;\u505c\u6b62

END

8255A\u6709\u4e24\u4e2a\u5730\u5740\u5f15\u811aA1\u548cA0\u8fdb\u884c\u7247\u5185\u5730\u5740\u8bd1\u7801\uff0cA1A0\u5e94\u8be5\u63a5\u7cfb\u7edf\u5730\u5740\u603b\u7ebf\uff08\u4e5f\u5c31\u662fCPU\u7684\u5730\u5740\u603b\u7ebf\uff09\u7684\u6700\u4f4e\u4e24\u4f4d\u3002
\u4ee58086CPU\u4e3a\u4f8b\uff0c\u5047\u8bbe\u524d\u7ea7\u7cfb\u7edf\u677fA9-A5\u8fd95\u6839\u5730\u5740\u7ebf\u786e\u5b9a\u7684\u7247\u90098255A\u5730\u5740\u8303\u56f4\u662f060H-07FH\uff0c\u5b83\u7684\u542b\u4e49\u662f\u5730\u5740\u603b\u7ebf\u4e0a\u51fa\u73b0\u8fd9\u4e2a\u5730\u5740\u8303\u56f4\u5185\u7684\u5730\u5740\u52198255A\u88ab\u9009\u4e2d\u53ef\u4ee5\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u8fd9\u91cc\u7684\u5730\u5740\u91cd\u53e0\uff08\u6307\u7684\u662f\u591a\u4e2a\u5730\u5740\u53ef\u4ee5\u9009\u4e2d\u540c\u4e00\u82af\u7247\uff09\u662f\u56e0\u4e3aA4-A0\u6ca1\u6709\u63a5\u7ebf\u9020\u6210\u7684\uff0c\u5b9e\u9645\u4e0a8086\u670916\u6839\u5730\u5740\u603b\u7ebf\uff0c\u9ad8\u4f4d\u5730\u5740\u603b\u7ebf\u4f1a\u9020\u6210\u66f4\u591a\u7684\u5730\u5740\u91cd\u53e0\uff0c\u6b64\u5904\u4e0d\u518d\u8003\u8651\u3002
\u5728\u4ee5\u4e0a\u7684\u8fde\u7ebf\u65b9\u5f0f\u4e0a\uff0cA1A0\u8fdb\u884c\u7247\u5185\u8bd1\u7801\uff0c\u5bf9\u5e94\u5173\u7cfb\u5982\u4e0b\uff1a
A1A0\u4e3a11\uff0c\u6b64\u65f6\u5730\u5740\u786e\u5b9a\u4e3a063H\uff0c\u5199\u65b9\u5f0f\u63a7\u5236\u5b57
A1A0\u4e3a00\uff0c\u6b64\u65f6\u5730\u5740\u786e\u5b9a\u4e3a060H\uff0c\u8bfb\u5199A\u53e3
A1A0\u4e3a01\uff0c\u6b64\u65f6\u5730\u5740\u786e\u5b9a\u4e3a061H\uff0c\u8bfb\u5199B\u53e3
A1A0\u4e3a10\uff0c\u6b64\u65f6\u5730\u5740\u786e\u5b9a\u4e3a062H\uff0c\u8bfb\u5199C\u53e3

哎！LS138是一片3-8的译码器，它的输出端Y5接的是左边8255的CS片选脚，Y6是右边的8255片选脚。知道这个就好办了。LS138的选择脚(A/B/C)按顺序输入的是0、0、0的时候，输出Y0有效，同理你这个要想选中左边的8255就要Y5有效，应当输入A=1、B=0、C=1，要选中右边的8255，应当输入A=0、B=1、C=1。

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绛旓細BX瀵勫瓨鍣ㄧ殑楂樹笁浣嶇疆1锛屽叾浣欎笉鍙 OR BX,1110000000000000B ;鎴栨寚浠わ紝缃1鏂规硶锛氬拰1鐩告垨瀹氫负1锛屽拰0鐩告垨瀵瑰簲浣嶄笉鍙 灏咲I瀵勫瓨鍣ㄧ殑楂樺湴鍏綅浜掓崲 MOV CL,8 ROL DL,CL 鎴栬咃細MOV AX,DI XCHG AH,AL MOV DI,AX 灏嗙珛鍗虫暟5浼犻佸埌DS锛1000H鍗曞厓涓 MOV BYTE PTR DS:[1000H],5 灏咥X娓呴浂锛堜袱绉...

寰満鍘熺悊涓庢眹缂璇█涔犻:
绛旓細[X]琛ョ爜锛滱BH锛孾Y]琛ョ爜锛滳DH锛孾X+Y]琛ョ爜锛漑X]琛ョ爜锛媅Y]琛ョ爜 锛滱B + CD = (1) 78H 鍗筹細[X+Y]琛ョ爜锛滱B + CD = 78H锛孋F=1銆傚彟澶栵細婧㈠嚭鏍囧織OF锛1锛沍F锛0锛汼F锛0锛涜緟鍔╄繘浣嶆爣蹇桝F锛1銆

寰満鍘熺悊姹囩紪璇█缂栫▼棰 鍦ㄦ暟鎹涓畾涔変簡涓涓猅AB鍙橀噺鏉ュ瓨鏀惧瓧鑺傚瀷鏁...
绛旓細MOV DX,0;DX鐢ㄦ潵瀛樻斁缁撴灉锛屽垵濮嬩负0 LOP1:銆 MOV AL,[BX]銆 銆;鎶夿X瀵瑰簲鐨勫兼斁鍏L瀵勫瓨鍣 CMP AL,0 銆;姣旇緝AL涓0锛岃繖閲屼富瑕佺湅ZF鏍囧織浣嶇殑鍊 JNE NEXT1 銆;濡俍F=0(鎰廇L涓嶄负0)锛岃烦鍒癗EXT1鏍囧彿澶 INC DX 銆 銆;璁℃暟鍣―X鍔1锛(鍙戠幇涓涓0)NEXT1:銆INC BX 銆 銆;BX鍔1锛...

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绛旓細姝ｇ‘銆傝鐪嬩笅鍥撅細

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绛旓細MOV BX,05;鍒濆bx锛岃緭鍑轰簲涓瓧绗 CALL DISPL;璋冪敤displ杈撳嚭data2 CRLF;鍥炶溅鎹㈣ MOV SI,OFFSET DATA1;鎶奷ata1鐨勫亸绉婚噺缁檚i MOV BX,05;鍒濆bx锛岃緭鍑轰簲涓瓧绗 CALL DISPL;璋冪敤displ杈撳嚭data1 CRLF;鍥炶溅鎹㈣ MOV DI,OFFSET DATA2;鎶奷ata2鐨勫亸绉婚噺缁檇i CALL ADDA;璋冪敤鍔犳硶瀛...

寰満鍘熺悊 姹囩紪璇█ 绠绛旈 鍦ㄦ暟鎹鏈夊涓嬭鍙
绛旓細BUF瀹氫箟鐨勬槸瀛楄妭鍙橀噺锛屽叡12涓厓绱狅紙鍖呮嫭瀛楃涓殑绌烘牸锛夛紝鍗12涓瓧鑺 ABUF 瀹氫箟鐨勬槸瀛楀彉閲忥紝鍏3*锛1+5*锛1+1锛夛級=33涓厓绱狅紝 鍗66涓瓧鑺 N=$-BUF 鍋囪BUF璧峰鍦板潃涓篈 N=12+66+A-A=78

鍏充簬寰満鍘熺悊鐨涓浜涢棶棰,鎬ユ眰瑙ｇ瓟,鑻ョ瓟妗堝叏,浼氳拷鍔犳偓璧
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寰満鍘熺悊姹囩紪璇█,鍝綅澶х鑳藉府鍚楃粰杩欐绋嬪簭鍔犱釜娉ㄩ噴,鍒濆鑰呬笉澶噦
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寰満鍘熺悊涓殑姹囩紪璇█棰:缂栫▼姹1鍒100鐨鍜,姹傝В缁撴灉鏀惧叆result涓,鍏朵腑r...
绛旓細;sum 1-100data segment result dw 0 msg db 'sum (1-100) is:$' lf db 0dh, 0ah, '$'data endscode segment assume cs:code, ds:datastart: mov ax, data mov ds, ax mov cx, 100 xor ax, axL1: add ax, cx loop L1 mov result, ax lea dx,...

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