Logisim evolution FAQ - logisim-evolution/logisim-evolution GitHub Wiki
Simulation Mode
When I change the status of the inputs with the Poke (1.) tools, the wires do not change color
One has to check that the simulation is active: menu Simulate->Simulation enabled If necessary, reset the simulation: menu Simulate->Reset simulation
The simulation stops by itself
Check that the circuit you are trying to simulate does not contain one of this components: VHDL entity, Port I/O, Reptar Local Bus
When simulating, the sub-circuit does not have the correct input/output values
Since the circuit could be used at multiple levels, it is necessary to access it respecting these levels, that is:
- either moving to "Hierarchy simulation" (10.) and double-clicking on the desired circuit
- or, from the main circuit, with the Poke tool (1.), double-clicking the lens of the subsequent sub-circuit, until the desired circuit is reached
Transistor behavior
Logisim-evolution has the correct digital behavior. Note that the model is a simplified digital model of transistors for specific digital purposes.
There are many uses of transistors that the simulation does not handle.
In digital usage, N-Type transistors can drive the output to 0
, but cannot drive the output to 1
.
A P-Type transistor can drive the output to 1
, but cannot drive it to 0
.
-- @davidhutchens in #1295