Texas Instruments TMS320C28x Reference Manual page 341

MOVA T,loc16
Example
; Calculate using 16-bit multiply:
; Y = (X0*C0) >> 2) + (X1*C1 >> 2) + (X2*C2 >> 2)
; X2 = X1
; X1 = X0
SPM
MOV
MPY
MOVP
MPY
MOV
MOVA
MPY
MOV
ADDL
MOVL
6-184
−2 ; Set product shift to >> 2
T,@X2 ; T = X2
P,T,@C2 ; P = T*C2
T,@X1 ; T = X1, ACC = X2*C2 >> 2
P,T,@C1 ; P = T*C1
@X2,T ; X2 = X1
T,@X0 ; T = X0, ACC = X1*C1 >> 2 + X2*C2 >> 2
P,T,@C0 ; P = T*C0
@X1,T ; X1 = X0
ACC,P << PM ; ACC = X0*C0 >> 2 + X1*C1 >> 2 + X2*C2 >> 2
@Y,ACC ; Store result into Y