Motorola DSP96002 - Manual (Page 559)

B-40 DSP96002 USER’S MANUAL MOTOROLA
rep #N-1 ;sum 1 1
mac x0,y0,a x:(r1)+,x0 y:(r5)+n5,y0 1 2
macr x0,y0,a (r4)+ ;finish, next column B 1 1
move a,y:(r6)+ ;save output 1 1
_ecols
move (r0)+n0 ;next row A 1 1
move #mat_b,r4 ;first element B 1 1
_erows
----- -----
19
((8+(N-1))N+5)N+8 = N
3
+7*N
2
+5N+8
←
At a DSP56000/1 clock speed of 20.5 MHz, a [10x10][10x10] can be computed in .1715 ms.
DSP96002 IMPLEMENTATION
Program ICycles
Words
move #mat_a,r0 ;point to A 1 1
move #mat_c,r6 ;output mat C 1 1
move #N,n0 ;array size 1 1
move n0,n5 1 1
do #N,_rows 2 3
move #mat_b,r4 ;point to B 1 1
move r0,r1 ;copy start of row 1 1
do #N,_cols 2 3
move r4,r5 1 1
fclr d0 (r4)+ 1 1
fclr d1 x:(r1)+,d4.s y:(r5)+n5,d5.s 1 1
rep #N 1 2
fmpy d4,d5,d1 fadd.s d1,d0 x:(r1)+,d4.s y:(r5)+n5,d5.s 1 1
fadd.s d1,d0 r0,r1 1 1
move d0.s,y:(r6)+ 1 1
_cols
move (r0)+n0 1 1
_rows
----- -----
Totals: 19
((N+7)N+6)N+7 = N
3
+7*N
2
+6N+7
←
At a DSP96002 clock speed of 26.66 MHz, a [10x10][10x10] can be computed in .1325 ms.