dioscuri.module.cpu
Class Instruction_POPA

java.lang.Object
  dioscuri.module.cpu.Instruction_POPA

All Implemented Interfaces:

Instruction

public class Instruction_POPA
extends java.lang.Object
implements Instruction

Intel opcode 61
Pop top 8 words off stack into general purpose registers
The order is DI, SI, BP, SP, BX, DX, CX, AX
The SP value popped from the stack is discarded
Flags modified: none

Constructor Summary

Instruction_POPA()
Class constructor

Instruction_POPA(CPU processor)
Class constructor specifying processor reference

Method Summary

void	execute() Pops the top 8 words stack top SS:SP into the 8 general purpose registers The order is DI, SI, BP, SP, BX, DX, CX, AX The SP value popped from the stack is discarded

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Instruction_POPA

public Instruction_POPA()

Class constructor

Instruction_POPA

public Instruction_POPA(CPU processor)

Class constructor specifying processor reference

Parameters:

processor - Reference to CPU class

Method Detail

execute

public void execute()

Pops the top 8 words stack top SS:SP into the 8 general purpose registers
The order is DI, SI, BP, SP, BX, DX, CX, AX
The SP value popped from the stack is discarded

Specified by:

execute in interface Instruction