BCD counter vhdl code

I told the reason for load not working in my previous post. Read it again. Or follow the above suggestion, but the waveform would be slightly different from the reference.

Also the led output is coming one cycle too soon, and with wrong polarity compared to the reference waveform. I also told a suggestion for this point.

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But you have twice "count_sig <= count_sig + 1;" in the code. But i don't think thats gonna affect the process.

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Right, only the last assignment in a process wins, this property is also utilized for the load case. But the double assignment should be removed for clarity.