When an accused faces a charge carrying a mandatory minimum sentence, the trial court must: (1) advise the accused of the existence of the mandatory minimum sentence before trial; (2) invite the accused to address the court on whether special circumstances exist that would warrant a departure from the mandatory minimum; (3) record any special circumstances found on the record; and (4) ensure it has jurisdiction to impose the sentence prescribed. Failure to follow these procedures, particularly the failure to canvass special circumstances, constitutes a material misdirection rendering the conviction and sentencing incompetent, warranting the quashing of proceedings and ordering a trial de novo. Courts must exercise particular care when dealing with unrepresented accused persons to ensure procedural fairness.