section 7 - Index of

page 132,60,1,1;newlms2n.asm; New Implementation of the delayed LMS on the DSPS6000 Revision C;Memory map:; Initial X H; x(n) x(n-1) x(n-2) x(n-3) x(n-4) hx hO h1 h2 h3; ] ] ]; ~ ~ ~;hx is an unused value to make the calculations faster.opt ccntaps equ 4input equ $FFCOoutput equ $FFC1org x:$Ostate ds Sorg y:$Ocoef ds 5org p:$40move #state,~;start of Xmove #2,nOmove #ntaps,mOmove #ooef + 1,r4move #ntaps,m4move #ooef,rS;modS;coefficients;modS;coefficientsmove m4,mS;modS_smploopmovepy:input,amovea,x:(rO);error signal is in y1;FIR sum in a=a+h(k) old*x(n-k);h(k)new in b=h(k)old + error*x(n-k-1),;get input sample;save input sampleProgword1Icyccir a x:(rO)+,xOmove x:(rO)+,x1 y:(r4)+,yOdo #taps/2,Jmsmac xO,yO,a yO,b b,y:(rS)+macr x1,y1,b x:(rO)+,xO y:(r4)+,yOmac x1,yO,a yO,b b,y:(r5)+macr xO,y1,b, x:(rO)+,x1 y:(r4)+,yO- Imsmove b,y:(rS)+move(rO) -nO;xO=x(n);x1 =x(n-1 ),yO=h(O),;a=h(O)*x(n),b=h(O);b=h(0)+e*x(n-1 )=h(O)new;xO=x(n-2) yO=h(1);a=a+h(1 )*x(n-1) b=h(1);b=h(1 )+e*x(n-2);x1 =x(n-3) yO=H(2);save last new c( );pointer update1121111311;(Get d(n), subtract fir output (reg a), multiply by "u", put;the result in y1. This section is application dependent.)movep a,y:output ;outputfir if desiredjmp_smploopendFigure 8-4 LMS FIR Adaptive FilterTotals: 112N+8-