Zilog Z08470 Manual do Utilizador descarregar pdf (Página 276)

100

101

Z80 Instruction Set UM008007-0715

264

Z80 CPU

User Manual

JR C, e

Operation

If C = 0, continue

If C = 1, PC ← PC+ e

Op Code

Operands

C, e

Description

This instruction provides for conditional branching to other segments of a program

depending on the results of a test on the Carry Flag. If the flag = 1, the value of displace-

ment e is added to the Program Counter (PC) and the next instruction is fetched from the

location designated by the new contents of the PC. The jump is measured from the address

of the instruction op code and contains a range of –126 to +129 bytes. The assembler auto-

matically adjusts for the twice incremented PC.

If the flag = 0, the next instruction executed is taken from the location following this

instruction. If condition is met

If condition is not met:

Condition Bits Affected

None.

M Cycles T States 4 MHz E.T.

3 12 (4, 3, 5) 3.00

M Cycles T States 4 MHz E.T.

2 7 (4, 3) 1.75

00 1 00011

e–2

1 2 ... 271 272 273 274 275 276 277 278 279 280 281 ... 325 326

Comentários a estes Manuais

Sem comentários

Zilog Z08470 Manual do Utilizador Página 276

Comentários a estes Manuais

Manuais e produtos relacionados com Sensores Zilog Z08470