IBM PPC440X5 Manual do Utilizador descarregar pdf (Página 433)

100

101

subfme

Subtract from Minus One Extended

Preliminary PPC440x5 CPU Core User’s Manual

instrset.fm.

September 12, 2002 Page 433 of 589

subfme

Subtract from Minus One Extended

(RT) ←¬(RA) – 1 + XER[CA]

¬(RA) + 0xFFFF FFFF + XER[CA] 2

– 1 then

XER[CA]

← 1

else

XER[CA]

← 0

The sum of the ones complement of register RA, –1, and XER[CA] 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

• CR[CR0] if Rc contains 1

• XER[SO, OV] if OE contains 1

• XER[CA]

Invalid Instruction Forms

• Reserved ﬁelds

subfme RT, RA OE=0, Rc=0

subfme. RT, RA OE=0, Rc=1

subfmeo RT, RA OE=1, Rc=0

subfmeo. RT, RA OE=1, Rc=1

31 RT RA OE 232 Rc

0 6 11 16 21 22 31

1 2 ... 428 429 430 431 432 433 434 435 436 437 438 ... 589 590

Comentários a estes Manuais

Sem comentários

IBM PPC440X5 Manual do Utilizador Página 433

Comentários a estes Manuais

Manuais e produtos relacionados com Processadores IBM PPC440X5