AMCC Proprietary 274
Revision 1.02 - September 10, 2007
PPC405 Processor
mulchw
Multiply Cross Halfword to Word Signed
Preliminary User’s Manual
25.Instruction Setmulchw
Multiply Cross Halfword to Word Sign ed
(RT)
0
:31
← (RA)
16:31
x (RB)
0:15
signed
The low-order halfword of RA is multiplied by the high-order halfword of RB. The resulting signed product replaces
the contents of RT.
Registers Altered
•RT
• CR[CR0]
LT, GT, EQ, SO
if Rc contains 1
Architecture Note
This instruction is part of the Multiply-Accumulate instruction set extensions and complies with the architectural
requirements for APUs of the PowerPC Embedded Environment. As such, it is not part of the PowerPC Architec-
ture, nor is it part of the PowerPC Embedded Environment. Programs that use this instruction may not be portable
to other implementations.
mulchw RT, RA, RB Rc=0
mulchw. RT, RA, RB Rc=1
4RTRARB 168Rc
0 6 11 16 21 31
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