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Re: 請問ㄧ下,判斷相等的語法該怎麼寫啊?
#3
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判斷相等的方式在PIC16的元件只有先用減法指令再判斷Z旗號再goto。

發表於: 2006/10/25 11:07
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Re: 請問ㄧ下,判斷相等的語法該怎麼寫啊?
#2
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參照:

icestone 寫到:
我之前用8051單晶片有寫過這樣的程式,如今我使用16F873A這一顆單晶片,不知要如何寫?才可寫出這樣的判斷式,是否可請各位大大指導依下~~

之前用8051寫過,程式如下:
TEST1:CJNE A,#00000010B,TEST2
AJMP CASE1
TEST2:CJNE A,#00000100B,TEST3
AJMP CASE2
TEST3:CJNE A,#00001010B,TEST4
AJMP CASE3
TEST4:CJNE A,#00001000B,START
AJMP CASE4


暫存器A,若等於00000010,則作CASE1
若不等於00000010,則跳TEST2





如果是我

btfss   A,1
         
goto   case2 
         做case1 
case2    做case2


或是 把A暫存器加一各數 然後查表 做case選擇

發表於: 2006/10/20 21:21
Twitter Facebook Google Plus Linkedin Del.icio.us Digg Reddit Mr. Wong 頂部


請問ㄧ下,判斷相等的語法該怎麼寫啊?
#1
新會員
新會員


查看用戶資訊
我之前用8051單晶片有寫過這樣的程式,如今我使用16F873A這一顆單晶片,不知要如何寫?才可寫出這樣的判斷式,是否可請各位大大指導依下~~

之前用8051寫過,程式如下:
TEST1:CJNE A,#00000010B,TEST2
AJMP CASE1
TEST2:CJNE A,#00000100B,TEST3
AJMP CASE2
TEST3:CJNE A,#00001010B,TEST4
AJMP CASE3
TEST4:CJNE A,#00001000B,START
AJMP CASE4


暫存器A,若等於00000010,則作CASE1
若不等於00000010,則跳TEST2




發表於: 2006/10/20 21:07
Twitter Facebook Google Plus Linkedin Del.icio.us Digg Reddit Mr. Wong 頂部







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