0x80000000 Integer not supported??

On 10/25/2010 05:24 AM, cdb wrote:
> Hi everybody,
> I'm designing a VHDL testbench for a VHDL module.
>
> I have to generate values to be written into a 32 bit register of my
> module.
> I decided tu use integer variables to compose my data and than convert them
> to std_logic_vector to perform the write operation on the module.
>
> The issue is that I discovered that VHDL
> integer range is from -2147483647 to 2147483647,
> that is to say 0x80000000 integer is not supported.
This is, indeed, an invalid positive integer in a signed 32-bit field.
The correct form would be -2147483648 (decimal).  I'm not exactly sure 
how to write a negative value in hex notation.

If the value doesn't need to be signed, then make it unsigned, and the 
assignment should work properly.

Jon