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QMPYAL P,XT,loc32
6-303
Example
; Calculate signed result:
; Y32 = (X0*C0 + X1*C1 + X2*C2) >> (32 + 2)
SPM −2
; Set product shift mode to “>> 2”
ZAPA
; Zero ACC, P, OVC
MOVL XT,@X0
; XT = X0
QMPYL P,XT,@C0
; P = high 32−bits of (X0*C0)
MOVL XT,@X1
; XT = X0
QMPYAL P,XT,@C1
; ACC = ACC + P >> 2,
; P = high 32−bits of (X1*C1)
MOVL XT,@X2
; XT = X0
QMPYAL P,XT,@C2
; ACC = ACC + P >> 2,
; P = high 32−bits of (X2*C2)
ADDL ACC,P << PM
; ACC = ACC + P >> 2
MOVL @Y32,ACC
; Store result into Y32
Summary of Contents for TMS320C28x
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Page 269: ...IN loc16 PA 6 112 MOV AL 0 AL 0 UOUT IORegC AL IOspace IORegC AL 10...
Page 308: ...MAXCUL P loc32 6 151 Saturate MOVL Var64 2 ACC Store result into Var64 MOVL Var64 P...
Page 509: ...SUBL ACC P PM 6 352 SUBL ACC P PM ACC S B 11 M X 4 MOVH Y ACC 5 Store Q15 result into Y...
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