It adjusts the accumulator after addition or subtraction so that it remains BCD, i.e., so that $49 + $19 equals $68, not $62 ----- Original Message ----- From: <Jeanne9005@aol.com> To: <assembly-86@lists.ticalc.org> Sent: Saturday, January 22, 2000 3:23 PM Subject: Re: A86: Quick question... > What does 'daa' do? > > Glen > tutorial1.cjb.net