这是因为"always"关键字通常用于描述硬件描述语言(HDL)中的行为模型,而"assignment"操作符用于将值分配给变量。 在硬件描述语言(如Verilog和VHDL)中,"always"关键字用于定义组合逻辑或时序逻辑的行为。它指定了一段代码应该在特定条件下执行。"assignment"操作符用于将值分配给变量或信号。 由于"always"关键字和"assig...
sinceclk‘eventyields abooleanvalue, andclkis of typebit. Theandoperator is not defined for this mixture of operand types. Instead, we compare theclkvalue with ‘1’ using the “=” operator, as shown in the if statement. VHDL-87
Concatenation operator in a port assignment ?Subscribe More actions RHerm1 Beginner 09-13-2019 11:52 AM 1,195 Views I'm using Quartus 18.1.1 / Build 646 and have observed a strange behavior with the following VHDL code: meta_data_ram : altsyncram generic map (...
Instead, we compare the clk value with ‘1’ using the “=” operator, as shown in the if statement. VHDL-87 In VHDL-87, the ‘last_value attribute for a composite signal returns the aggregate of last values for each of the scalar elements of the signal. For example, suppose a bit-...
Concatenation operator in a port assignment ?Subscribe More actions RHerm1 Beginner 09-13-2019 11:52 AM 1,219 Views I'm using Quartus 18.1.1 / Build 646 and have observed a strange behavior with the following VHDL code: meta_data_ram : altsyncram generic map (...