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| RM0004 Datasheet, PDF (609/1176 Pages) STMicroelectronics – Programmer’s reference manual for Book E processors | |||
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Instruction set
RM0004
evmwlumiaaw
SPE APU User
evmwlumiaaw
Vector multiply word low unsigned, modulo, integer and accumulate in words
evmwlumiaaw
rD,rA,rB
0
56
000100
10 11
15 16
20 21
31
rD
rA
rB
10101001000
// high
temp0:63 â rA0:31 Ãui rB0:31
rD0:31 â ACC0:31 + temp32:63
// low
temp0:63 â rA32:63 Ãui rB32:63
rD32:63 â ACC32:63 + temp32:63
// update accumulator
ACC0:63 â rD0:63
For each word element in the accumulator, the corresponding word unsigned integer
elements in rA and rB are multiplied. The least significant 32 bits of each product are added
to the contents of the corresponding accumulator word and the result is placed into rD and
the accumulator.
Other registers altered: ACC
Figure 124. Vector multiply word low unsigned, modulo, integer & accumulate in
words (evmwlumiaaw)
0
31 32
63
rA
rB
X
X
Intermediate product
Accumulator
+
+
rD and Accumulator
609/1176
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