B.1.1 Real Correlation Or Convolution (Fir Filter) - Motorola DSP56800 Manual

w EQU 0
H EQU 0
XM EQU 0
state equ 0
ntaps equ $10
k equ 0
n equ 32
p equ 10
mask equ 10
image equ $40
dividend equ .25
divisor equ .5
paddr equ 0
qaddr equ 4
w1 equ 0
w2 equ 10
s equ 0
tablebase equ 0
lpc equ 8
frame equ 0
cor equ $100
shift equ $80
table equ $180
org p:$40
B.1.1 Real Correlation or Convolution (FIR Filter)
; c(n) = SUM(I=0,...,N-1) { a(I) * b(n-I) }
opt cc
MOVE #AD,R0
MOVE #BD,R3
CLR A
MOVE
REP #N
MAC Y0,X0,A X:(R0)+,Y0
RND A
;
;
; shift constant
; base address of a-law table
X:(R0)+,Y0
X:(R3)+,X0
X:(R3)+,X0
Total:
DSP Benchmarks
; 2 2
; 2 2
; 1 1
; 1 1
; 1 3
; 1 1
; 1 1
________
9 1N+11
B-3