Zilog Z16F2810 Manual do Utilizador descarregar pdf (Página 118)

EI Instruction UM018809-0611

102

ZNEO

CPU Core

User Manual

Definition

Enable Interrupts

Syntax

Operation

FLAGS[0]  1

Description

The Master Interrupt Enable (IRQE) bit of the Flags register is set to 1. This allows the ZNEO

CPU to respond to interrupt requests.

Flags

Syntax and Opcodes

Example

Before:

IRQE=0 (Vectored interrupt requests are globally disabled.)

EI ;Object code: FFFA

After:

IRQE=1 (Interrupt requests are enabled or disabled by their individual control registers.)

76543210

C Z S V B CIRQE IRQE

–––––––1

Legend

C = No change.

Z = No change.

S = No change.

V = No change.

B = No change.

CIRQE = No change.

IRQE = Set to 1.

Instruction, Operands Word 0 Word 1 Word 2

EI FFFAH

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 215 216

Sem comentários

Zilog Z16F2810 Manual do Utilizador Página 118