Type Members

1.  trait ResetProcedure[A] extends Type[A]

   Stimulus that will apply a standard reset procedure to a Chisel circuit.

   Stimulus that will apply a standard reset procedure to a Chisel circuit.

   The reset procedure is as follows:

   time 0: bring everything up using simulator settings time 1: bring reset out of x and deassert it. time 2: assert reset time 3: first clock edge time 4 + n: deassert reset (where n == additionalResetCycles)

   This intentionally structured to guarantee the following properties:

   1. There is guaranteed to be a time when FIRRTL/Verilog-based randomization can happen at _either_ time 0 or time 1.) 2. If time 1 is used for FIRRTL/Verilog-based randomization, then time 0 can be used for simulator-based initialization, e.g., +vcs+initreg+random. Simulator initialization will race with FIRRTL/Verilog-based randomization and it is critical that they do not happen at the same time. 3. Both FIRRTL/Verilog-based randomization and simulator-based randomization should not occur on a clock edge, e.g., an edge when reset is asserted. This can be yet-another race condition that has to be avoided. 4. Reset always sees a posedge. This avoids problems with asynchronous reset logic behavior where they may (correctly in Verilog) _not_ fire if you bring the design with reset asserted. Note: it would be fine to do an x -> 1 transition to show an edge, however, it looks cleaner to bring reset to 0.
2.  trait RunUntilFinished[A] extends Type[A]

   Stimulus that will run a simulation, expecting a chisel3.stop (a Verilog $finish) to occur before a maximum number of cycles has elapsed.

   Stimulus that will run a simulation, expecting a chisel3.stop (a Verilog $finish) to occur before a maximum number of cycles has elapsed.

   See also

   RunUntilSuccess

3.  trait RunUntilSuccess[A] extends Type[A]

   Stimulus that will run a simulation expecting a "success" port to assert.

   Stimulus that will run a simulation expecting a "success" port to assert.

   If the specified "success" port does not assert, then an Exceptions.Timeout will be thrown.

   See also

   RunUntilFinished