com.monkeycoder.monkeynes.hardware.mapper
Class MemoryMapperZero

java.lang.Object
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  +--com.monkeycoder.monkeynes.hardware.mapper.MemoryMapper
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        +--com.monkeycoder.monkeynes.hardware.mapper.MemoryMapperZero

public class MemoryMapperZero

extends MemoryMapper

This is an implementation of Mapper 0. Mapper 0 simply means that there is no mapper in use.

Originally part of the MonkeyNES project.

Author:

David Stephens

Field Summary

Fields inherited from class com.monkeycoder.monkeynes.hardware.mapper.MemoryMapper

mainMem, rom, vidMem

Constructor Summary

MemoryMapperZero(NesMainMemory inMainMem, NesVideoMemory inVidMem, NesRom inRom)
Creates a new MemoryMapperZero.

Method Summary

void	doCycle() Called to tell the mapper to do a cycle.
String	getMapperDesc() Returns the description of this mapper.
String	getMapperName() Returns the name of this mapper.
int	getMapperNumber() Returns the mapper number of this mapper.
void	powerOff() Called to tell the mapper that power is now off.
void	powerOn() Called to tell the mapper that power is now on.
void	reset() Called to tell the mapper that a reset has occurred.
boolean	write(int inAddress, int inValue) Called to indicate to the mapper that a specific address in memory was written to.

Methods inherited from class com.monkeycoder.monkeynes.hardware.mapper.MemoryMapper

getMainMemory, getRom, getVideoMemory, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryMapperZero

public MemoryMapperZero(NesMainMemory inMainMem,
                        NesVideoMemory inVidMem,
                        NesRom inRom)

Creates a new MemoryMapperZero.

Parameters:

inMainMem - Main memory bank accessed by this mapper.

inVidMem - Video memory bank accessed by this mapper.

inRom - ROM accessed by this mapper.

Method Detail

getMapperNumber

public int getMapperNumber()

Description copied from class: MemoryMapper

Returns the mapper number of this mapper.

Specified by:

getMapperNumber in class MemoryMapper

Returns:

The mapper number of this mapper.

getMapperName

public String getMapperName()

Description copied from class: MemoryMapper

Returns the name of this mapper.

Specified by:

getMapperName in class MemoryMapper

Returns:

The name of this mapper.

getMapperDesc

public String getMapperDesc()

Description copied from class: MemoryMapper

Returns the description of this mapper.

Specified by:

getMapperDesc in class MemoryMapper

Returns:

The description of this mapper.

powerOn

public void powerOn()

Description copied from class: MemoryMapper

Called to tell the mapper that power is now on.

Specified by:

powerOn in class MemoryMapper

powerOff

public void powerOff()

Description copied from class: MemoryMapper

Called to tell the mapper that power is now off.

Specified by:

powerOff in class MemoryMapper

reset

public void reset()

Description copied from class: MemoryMapper

Called to tell the mapper that a reset has occurred.

Specified by:

reset in class MemoryMapper

doCycle

public void doCycle()

Description copied from class: MemoryMapper

Called to tell the mapper to do a cycle.

Specified by:

doCycle in class MemoryMapper

write

public boolean write(int inAddress,
                     int inValue)

Description copied from class: MemoryMapper

Called to indicate to the mapper that a specific address in memory was written to.

Specified by:

write in class MemoryMapper

Parameters:

inAddress - The address of main memory that was written.

inValue - The value that will be written to main memory.

Returns:

Whether or not the write should be allowed to happen.