The HTL8254 IP core is written in vendor neutral VHDL and as such can be simulated by any simulation tool. The testbench however uses Siemens’ Modelsim SignalSpy in order to provide a non-intrusive ...

A much better approach would be to set up a timer to toggle the LED at a given interval so that the CPU can do meaningful tasks or sleep in between the timer interrupts. The Application Timer library ...