Description: With 51 controls, 82C55 extended keyboard test, assembly language development, 82C55 chip is dedicated to the parallel expansion interface.
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Demo
....\8255.ASM
....\8255.LST
....\8255.OBJ
....\Demo
....\Demo.build_log.htm
....\Demo.hex
....\Demo.lnp
....\Demo.M51
....\Demo.uvgui.YANMY
....\Demo.uvopt
....\Demo.uvproj
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