Technical data

Basic VHDL simulation
ModelSim EE/SE Tutorial 2-27
The arrow in the Source window points to the next HDL statement to be executed.
(If the simulator is not evaluating a process at the time the Break occurs, no arrow
will be displayed in the Source window.)
Next, you will set a breakpoint in the function on line 18.
13 Move the pointer to the VSIM Source window. Using the vertical scroll bar, scroll until
line 18 is visible. Click at or near line number 18 to set the breakpoint. You should see
a red dot next to the line number where the breakpoint is set. This breakpoint can be
toggled on and off by clicking it.
(PROMPT: bp counter.vhd 18)
Note: Breakpoints can be set only on executable lines -- denoted by green line numbers.