Package net.sourceforge.uiq3.fx602p

Class Op_M

java.lang.Object

net.sourceforge.uiq3.fx602p.Owned_Operation

net.sourceforge.uiq3.fx602p.Op_M

All Implemented Interfaces:

IClear, IOperation, IOwned_Operation, IProgrammable_Operation

Direct Known Subclasses:

A_Register, Op_M_Minus, Op_M_Plus, Op_Min, Op_MR, Op_X_M

abstract class Op_M
extends Owned_Operation
implements IProgrammable_Operation

Halt Calculator

Author:

"Martin Krischik" «krischik@users.sourceforge.net»

Field Summary

Fields

Modifier and Type	Field	Description
static int	Begin_F_Register
(package private) boolean	Is_M_Register	True when operating on an M-Register
private static Logger	Logger	Class logger instance.
static int	Mask_M_Register_Number
protected int	Register	Register number worked on
private static String	TAG	Class logger tag.

Fields inherited from class net.sourceforge.uiq3.fx602p.Owned_Operation

Owner

Constructor Summary

Constructors

Constructor	Description
Op_M(@NotNull Calculator Owner)	Create operation and attach to owning calculator.

Method Summary

Modifier and Type	Method	Description
(package private) void	Check_M(int Memory, boolean Is_M)	Check im M Register is valid
void	Clear(boolean AC)	Reset state - for state full operations.
void	Execute(short Opcode)	Execute virtual CPU command or key stroke
(package private) int	Get_M(int Opcode)
(package private) boolean	Is_M(int Opcode)

Methods inherited from class net.sourceforge.uiq3.fx602p.Owned_Operation

µReset, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sourceforge.uiq3.calculator.IProgrammable_Operation

Display

Field Detail

Logger

private static final Logger Logger

Class logger instance.

TAG

private static final String TAG

Class logger tag.

Begin_F_Register

public static final int Begin_F_Register

See Also:

Constant Field Values

Mask_M_Register_Number

public static final int Mask_M_Register_Number

See Also:

Constant Field Values

Is_M_Register

boolean Is_M_Register

True when operating on an M-Register

Register

protected int Register

Register number worked on

Constructor Detail

Op_M

Op_M(@NotNull
     @NotNull Calculator Owner)

Create operation and attach to owning calculator.

Parameters:

Owner - Calculator which will call this Opcode

Method Detail

Check_M

void Check_M(int Memory,
             boolean Is_M)
      throws M_Error

Check im M Register is valid

Parameters:

Memory - Memory register to test

Is_M - true when M register is handled

Throws:

M_Error - exeption of memory is not valid

Clear

public void Clear(boolean AC)

Reset state - for state full operations.

Specified by:

Clear in interface IClear

Parameters:

AC - All Clear reset

See Also:

IClear.Clear(boolean)

Execute

public void Execute(short Opcode)
             throws Error

Description copied from interface: IOperation

Execute virtual CPU command or key stroke

Specified by:

Execute in interface IOperation

Parameters:

Opcode - Virtual CPU Operation to be executed

Throws:

Error - something went wrong

M_Error - Memory accessed does not exist

Error

See Also:

IOperation.Execute(short)

Get_M

int Get_M(int Opcode)

Parameters:

Opcode - Opcode for which the memory register should be determined

Returns:

number of the register

Is_M

@Contract(pure=true)
boolean Is_M(int Opcode)

Parameters:

Opcode - Opcode for which the F or M register use need to be determined

Returns:

true if normal memory is used.