IBM PPC440X5 Manual de usuario descargar pdf (Pagina 256)

Add Carrying

PPC440x5 CPU Core User’s Manual Preliminary

Page 256 of 589

instrset.fm.

September 12, 2002

Add Carrying

(RT) ← (RA) + (RB)

if (RA) + (RB) 2

The sum of the contents of register RA and register RB is placed into register RT.

XER[CA] is set to a value determined by the unsigned magnitude of the result of the add operation.

Registers Altered

• CR[CR0] if Rc contains 1

• XER[SO, OV] if OE contains 1

addc RT, RA, RB OE= 0, Rc= 0

addc. RT, RA, RB OE= 0, Rc= 1

addco RT, RA, RB OE= 1, Rc= 0

addco. RT, RA, RB OE= 1, Rc= 1

31 RT RA RB OE 10 Rc

0 6 11 16 21 22 31

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IBM PPC440X5 Manual de usuario Pagina 256