3题:
ORG 0000H
AJMP MAIN
ORG 000BH
AJMP T0INT
ORG 0100H
MAIN:MOV TMOD,#01H
MOV TH0,#0FCH
MOV TL0,#18H
SETB ET0
SETB EA
SETB TR0
SJMP $
T0INT:MOV TH0,#0FCH
MOV TL0,#18H
CPL P1.0
RETI
END
4题:
ORG 0000H
MOV R7,#10
MOV R0,#20H
MOV DPTR,#0C000H
LOOP1:MOVX A,@DPTR
MOV @R0,A
INC DPTR
INC R0
DJNZ R7,LOOP1
MOV R7,#10
MOV R0,#20H
MOV DPTR,#0A000H
LOOP2:MOV A,@R0
MOVX @DPTR,A
INC DPTR
INC R0
DJNZ R7,LOOP2
SJMP $
END
追问下面那题为什么是从0000H开始的?
不是说不能从那里开始写主程序的么