What is the difference between the state criminal code and the state code of criminal procedure?

The criminal code identifies specific acts that are deemed illegal, and the code of criminal procedure defines how the criminal justice system manages the defendant’s arrest, investigation, prosecution, and potential conviction and incarceration.
The criminal code can be changed; the code of procedure is permanent and not subject to amendment.
The criminal code defines what happens when a prisoner is sentenced, and the code of procedure defines what happens when a defendant is convicted.
The criminal code defines only what happens before trial, and the code of criminal procedure defines only what happens after trial.