Ibm uPD78082 Manual do Utilizador descarregar pdf (Página 240)

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CHAPTER 16 INSTRUCTION SET

16.1.2 Description of “operation” column

A : A register; 8-bit accumulator

X : X register

B : B register

C : C register

D : D register

E : E register

H : H register

L : L register

AX : AX register pair; 16-bit accumulator

BC : BC register pair

DE : DE register pair

HL : HL register pair

PC : Program counter

SP : Stack pointer

PSW : Program status word

CY : Carry flag

AC : Auxiliary carry flag

Z : Zero flag

RBS : Register bank select flag

IE : Interrupt request enable flag

NMIS : Non-maskable interrupt servicing flag

( ) : Memory contents indicated by address or register contents in parentheses

H, ×L : Higher 8 bits and lower 8 bits of 16-bit register

: Logical product (AND)

: Logical sum (OR)

: Exclusive logical sum (exclusive OR)

—— : Inverted data

addr16 : 16-bit immediate data or label

jdisp8 : Signed 8-bit data (displacement value)

16.1.3 Description of “flag operation” column

(Blank) : Nt affected

0 : Cleared to 0

1 : Set to 1

× : Set/cleared according to the result

R : Previously saved value is restored

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Ibm uPD78082 Manual do Utilizador Página 240