AMCC Proprietary 330
Revision 1.02 - September 10, 2007
PPC405 Processor
subfic
Subtract From Immediate Carrying
Preliminary User’s Manual
subfic
Subtract From Immediate Carrying
(RT) ← ¬(RA) + EXTS(IM) + 1
if
¬(RA) + EXTS(IM) + 1 2
32
– 1 then
XER[CA]
← 1
else
XER[CA]
← 0
The sum of the ones complement of RA, the IM field sign-extended to 32 bits, and 1 is placed into register RT.
XER[CA] is set to a value determined by the unsigned magnitude of the result of the subtract operation.
Registers Altered
•RT
• XER[CA]
Architecture Note
This instruction is part of the PowerPC User Instruction Set Architecture.
subfic RT, RA, IM
8RTRA IM
0 6 11 16 31
>
u
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