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UM018809-0611 JPA Instruction

ZNEO

CPU Core

User Manual

113

JPA

Definition

Jump Absolute

Syntax

JP dst

Operation

 dst

Description

JPA replaces the contents of the Program Counter with the 32-bit immediate operand. Program

control then passes to the instruction addressed by the Program Counter.

If the immediate operand is odd, the least significant bit is discarded so that the call destination

address is always an even number.

The JPA instruction is used to explicitly invoke the 32-bit immediate jump opcode in situations

when a fixed opcode size is desired, such as a jump table.

Flags

Flags are not affected by this instruction.

Syntax and Opcodes

Example

Before:

PC=0000_044EH

JPA 00352920H ;Object Code: F230 0035 2920

After:

PC=0035_2920

Instruction, Operands Word 0 Word 1 Word 2

JPA imm32 F230H imm[31:16] imm[15:0]

1 2 ... 124 125 126 127 128 129 130 131 132 133 134 ... 215 216

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