编写子程序将片内RAM40H单元开始的15个字节的数据传送到片外RAM2000H开始的单元中去。
R7计数, R0用作地址指针,程序如下:
CHUANS:MOV R7,#0FH
MOV R0,#30H
MOV DPTR,#2000H
LOOP: MOV A, @R0
MOVX @DPTR,A
INC DPTR
INC R0
DJNZ R7,LOOP
RET
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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