On December 16, 1980, a man wielding a sawed-off shotgun robbed the Oak Forest Drugstore in Little Rock. One week later appellant was returned to the Cummins penitentiary unit for violating the parole provisions of an earlier and unrelated sentence. Then, on January 28, 1981, he was charged with the armed robbery of the drugstore. Although he remained at the Cummins prison unit, he was not arrested on the armed robbery charge until the day he was to be released, December 23, 1981. On that date he was placed in the Pulaski County Jail. On March 23, 1982, almost fourteen months after the charge was filed and still without having been tried or released on bond, the appellant pleaded guilty to the drugstore robbery. After again being returned to the penitentiary he filed a petition for post-conviction relief asking that his sentence be vacated because of ineffective assistance of counsel (not present counsel). The trial court refused to grant an evidentiary hearing. Hall v. State, 279 Ark. 265, 650 S.W.2d 587 (1983). On remand the trial court denied relief but gave no reason. Again, we reverse but, this time, dismiss. Jurisdiciton is in this Court within the purview of Rule 29 (l)(c) and (j).
The time for a timely trial commenced running on January 28, 1981, the day the charge was filed. Rule 28.2, Arkansas Rules of Criminal Procedure, Art. VIII, Speedy Trial, Vol. 4A (Repl. 1977 and Supp. 1983). On that day appellant was incarcerated in prison in this state pursuant to *284conviction on a prior offense. A.R.Cr.P. Rule 28.1 (b) provides:
Any defendant charged with an offense in circuit court and incarcerated in prison in this state pursuant to conviction of another offense shall be entitled to have the charge dismissed with an absolute bar to prosecution if not brought to trial within twelve (12) months from the time provided in Rule 28.2, excluding only such periods of necessary delay as are authorized in Rule 28.3.
No period of authorized delay was proven. After more than twelve months had lapsed from the date of the charge, or after January 29, 1982, the charge against appellant would have been discharged, and prosecution absolutely barred, if counsel had moved for dismissal. A.R.Cr.P. Rule 28.1 (b) and 30.1 (a); Floyd v. State, 280 Ark. 226, 656 S.W.2d 701 (1983). Appellant waived his right to a speedy trial when he later pleaded guilty. A.R.Cr.P. Rule 30.2.
However, a waiver of the right to a speedy trial does not operate, as a matter of law, as a waiver of the right to effective assistance of counsel. The constitutional right to effective assistance of counsel at the time of entering a plea of guilt is not vitiated by A.R.Cr.P. Rule 30.2. In Clark v. State, 274 Ark. 81, 621 S.W.2d 857 (1981) we stated:
If, in the original trial, the defendant knowingly and intelligently waived his speedy trial rights he cannot raise that argument in a post-conviction proceeding. Questions which might have been raised at the original trial are not permissible issues at a Rule 37 proceeding . . . However, if the defendant did not knowingly and understandingly waive his speedy trial rights he is entitled to seek post-conviction relief on the basis of ineffective assistance of counsel.
In the case before us the relevant circumstances are that appellant was entitled to have the prosecution barred; counsel at the time of the plea offered no testimony of trial strategy or other reason for the failure to assert the right to a *285speedy trial; and the appellant did not knowingly and intelligently waive his right to a speedy trial. The evidence is clear and convincing that appellant did not receive effective assistance of counsel and, as a result, suffered prejudice. The ruling of the trial court is clearly erroneous. See, Blackmon v. State, 274 Ark. 202, 623 S.W.2d 184 (1981).
Reversed and dismissed.
Adkisson, C.J., and Hickman and Hays, JJ., dissent.