PS2控制电子琴示例—通过RS232串口，利用PC的键盘作琴键\.xhdl3.xref
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....................................................\F_CODE.bsf
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....................................................\PIANO.bdf
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....................................................\PIANO1.bsf
....................................................\PIANO1.v
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....................................................\PS2.vhd
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....................................................\PS2_PIANO.bsf
....................................................\SOF_FILE\PIANO.sof
....................................................\SPKER.bsf
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PS2控制电子琴示例—通过RS232串口，利用PC的键盘作琴键