89C51IO interrupt experimental procedure, there are C language and assembler, as I write, please reference.

example\example.lst
.......\example.obj
.......\ExtDll.iex
.......\Last Loaded 外部中断实验-演示实验.DBK
.......\Last Loaded 外部中断实验_实验内容1.DBK
.......\shiyanli.hex
.......\STARTUP.A51
.......\STARTUP.LST
.......\STARTUP.OBJ
.......\test.lst
.......\test.obj
.......\testli
.......\testli.asm
.......\testli.hex
.......\testli.lnp
.......\testli.LST
.......\testli.M51
.......\testli.OBJ
.......\testli.plg
.......\testli.uvopt
.......\testli.uvproj
.......\testli_uvopt.bak
.......\testli_uvproj.bak
.......\外部中断实验-演示实验.DSN
.......\外部中断实验-演示实验.PWI
.......\外部中断实验_实验内容1.PWI
test\ExtDll.iex
....\Last Loaded 外部中断实验_实验内容1.DBK
....\STARTUP.A51
....\STARTUP.LST
....\STARTUP.OBJ
....\test
....\test.asm
....\test.c
....\test.hex
....\test.lnp
....\test.LST
....\test.M51
....\test.OBJ
....\test.plg
....\test.uvopt
....\test.uvproj
....\test._ia
....\test1.lst
....\test1.obj
....\testli.obj
....\testli._ia
....\test_uvopt.bak
....\test_uvproj.bak
....\外部中断实验_实验内容1.DSN
....\外部中断实验_实验内容1.PWI
example
test

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