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Cedrick Baker
Cedrick Baker

Reputation: 61

Integer Range to vector

I've had an issue converting a vectors inputs to integers in my code. I am new to VHDL but the below code works with the integer RANGE commented out code but there is an error when I try to convert the vector values to an integers. Here is a copy of my code and error:

screenshot

Update1: I've tried your fix and it takes care of one of the errors but the new error message and code looks like this:

screenshot

Upvotes: 1

Views: 2142

Answers (1)

Roman
Roman

Reputation: 385

In according to your declaration in follow line type mem is array (...) of std_logic_vector(...) your memory waits for std_logic_vector type rather than unsigned like in your assignment RAMArray(unsigned(addr)) <= unsigned(din).

Here it is not sufficient to only use a type conversion to unsigned, but you have to add type conversion function to_integer in the argument. In other words

RAMArray(to_integer(unsigned(addr))) <= din

The second error is in the follow line qout <= RAMArray(addr). Here you should also use both the type conversion to unsigned as well as the type conversion function to_integer. The location parameter would be of the integer type. Example:

qout <= RAMArray(to_integer(unsigned(addr)))

Try to fix your code with my suggestions and I think it will work.

Upvotes: 1

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