He pointed, instead, to the omission of reference in the colloquy to confrontation and self-incrimination. Disposing of the appeal, we wrote, Commonwealth v. Nolan, 16 Mass. App. Ct. 994 (1983): (1) The motion, as originally framed, was correctly denied. See Commonwealth v. Jefferson, 4 Mass. App. Ct. 352, 356 (1976); Commonwealth v. Cepulonis, 9 Mass. App. Ct. 302, 311 (1980), and cases cited. (2) In our view there was no per se rule that entitled a defendant to impeach a conviction solely for the reason latterly relied on by counsel.

Commonwealth v. Stanton, supra at 622. Accord, Commonwealth v. Jefferson, 4 Mass. App. Ct. 352, 355 (1976); Commonwealth v. Brown, 6 Mass. App. Ct. 844 (1978). The limitations on, or requirements for, parole are but "contingent consequences of being confined."