STMicroelectronics ST10 Series Programming Manual page 144

ST10 FAMILY PROGRAMMING MANUAL
CoMACM(R/-)
Group
Syntax
Operation
Syntax
Operation
Syntax
Operation
Syntax
Operation
Syntax
Operation
Data Types
Result
142/172
Multiply-Accumulate
Parallel Data Move & Optional Round
Multiply/Multiply-Accumulate Instructions
CoMACM op1, op2
IF (MP = 1) THEN
(tmp) <-- ((op1))*((op2)) << 1
(ACC) <-- (ACC) + (tmp)
ELSE
(tmp) <-- ((op1))*((op2))
(ACC) <-- (ACC) + (tmp)
END IF
((IDX (-⊗))) <-- ((IDX
i
CoMACM op1, op2, rnd
IF (MP = 1) THEN
(tmp) <-- ((op1))*((op2)) << 1
(ACC) <-- (ACC) + (tmp) + 00 0000 8000
ELSE
(tmp) <-- ((op1))*((op2))
(ACC) <-- (ACC) + (tmp) + 00 0000 8000
END IF
(MAL) <-- 0
((IDX (-⊗))) ¨ ((IDX
i
CoMACM- op1, op2
IF (MP = 1) THEN
(tmp) <-- ((op1))*((op2)) << 1
(ACC) <-- (ACC) - (tmp)
ELSE
(tmp) <-- ((op1))*((op2))
(ACC) <-- (ACC) - (tmp)
END IF
((IDX (-⊗))) <-- ((IDX
i
CoMACMR op1, op2
IF (MP = 1) THEN
(tmp) <-- ((op1))*((op2)) << 1
(ACC) <-- (tmp) - (ACC)
ELSE
(tmp) <-- ((op1))*((op2))
(ACC) <-- (tmp) - (ACC)
END IF
((IDX (-⊗))) <-- ((IDX
i
CoMACMR op1, op2, rnd
IF (MP = 1) THEN
(tmp) <-- ((op1))*((op2)) << 1
(ACC) <-- (tmp) - (ACC) + 00 0000 8000
ELSE
(tmp) <-- ((op1))*((op2))
(ACC) <-- (tmp) - (ACC) + 00 0000 8000
END IF
(MAL) <-- 0
((IDX (-⊗))) <-- ((IDX
i
DOUBLE WORD
40-bit signed value
))
i
))
i
))
i
))
i
))
i
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