dioscuri.module.cpu
Class Instruction_AAD_Ib

java.lang.Object
  dioscuri.module.cpu.Instruction_AAD_Ib

All Implemented Interfaces:

Instruction

public class Instruction_AAD_Ib
extends java.lang.Object
implements Instruction

Intel opcode D5
ASCII adjust AX before division.
Adjust two unpacked BCD digits so a division operation on result yields correct unpacked BCD value
Flags modified: SF, ZF, PF

Constructor Summary

Instruction_AAD_Ib()
Class constructor

Instruction_AAD_Ib(CPU processor)
Class constructor specifying processor reference

Method Summary

void	execute() Adjust two unpacked BCD digits so a division operation on result yields correct unpacked BCD value. Set AL register to (AL + (10 * AH)), clear AH register.

Methods inherited from class java.lang.Object

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

Constructor Detail

Instruction_AAD_Ib

public Instruction_AAD_Ib()

Class constructor

Instruction_AAD_Ib

public Instruction_AAD_Ib(CPU processor)

Class constructor specifying processor reference

Parameters:

processor - Reference to CPU class

Method Detail

execute

public void execute()

Adjust two unpacked BCD digits so a division operation on result yields correct unpacked BCD value.
Set AL register to (AL + (10 * AH)), clear AH register. AX is then equal to binary equivalent of original unpacked two-digit (base 10) number.
The generalized version adjusts two unpacked digits of any number base (defined by imm8); for example, 08H for octal, 0AH for decimal, or 0CH for base 12.

Specified by:

execute in interface Instruction