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Altera_Forum
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8 years ago

FPGA Development Board - strange shift operation behavior

My development board based on: Cyclone IV EP4CE10E22C8N Quartus: 17.0.0 Lite Edition top-level entity code: module led4_reg(clk, led); parameter BASE_LED_SEQUENCE = 12'b000011101101...
Altera_Forum's avatar
Altera_Forum
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8 years ago

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Thank you,

It's pretty well working.

But could you explain me why I can't get previous value for `led` in other always blocks?

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Not sure what you mean by this. led[11:0] is a register, so you can access it at any time in any logic equation within that module. The value will only change when the always block that encloses it is triggered and the value is updated.