dioscuri.module.cpu32
Class PhysicalAddressSpace

java.lang.Object
  dioscuri.module.cpu32.Memory
      dioscuri.module.cpu32.AbstractMemory
          dioscuri.module.cpu32.AddressSpace
              dioscuri.module.cpu32.PhysicalAddressSpace

All Implemented Interfaces:

ByteArray, HardwareComponent, Hibernatable

public final class PhysicalAddressSpace
extends AddressSpace
implements HardwareComponent

Author:

Bram Lohman, Bart Kiers

Nested Class Summary

static class	PhysicalAddressSpace.MapWrapper
static class	PhysicalAddressSpace.UnconnectedMemoryBlock

Field Summary

static int	SYS_RAM_SIZE
static Memory	UNCONNECTED

Fields inherited from class dioscuri.module.cpu32.AddressSpace

BLOCK_MASK, BLOCK_SIZE, INDEX_MASK, INDEX_SHIFT, INDEX_SIZE

Constructor Summary

PhysicalAddressSpace()

Method Summary

void	acceptComponent(HardwareComponent component)
void	allocateMemory(int start, Memory block)
void	clear()
CodeBlock	decodeCodeBlockAt(Processor cpu, int offset)
void	dumpState(java.io.DataOutput output)
int	execute(Processor cpu, int offset)
int	getAllocatedBufferSize()
boolean	getGateA20State()
Memory	getReadMemoryBlockAt(int offset)
Memory	getWriteMemoryBlockAt(int offset)
boolean	initialised()
void	loadState(java.io.DataInput input)
void	mapMemoryRegion(Memory underlying, int start, int length)
boolean	reset()
void	setGateA20State(boolean value)
void	timerCallback()
java.lang.String	toString()
void	unmap(int start, int length)
void	updateComponent(HardwareComponent component)
boolean	updated()

Methods inherited from class dioscuri.module.cpu32.AddressSpace

copyContentsFrom, copyContentsInto, getBlockEnd, getBlockStart, getByte, getDoubleWord, getLowerDoubleQuadWord, getQuadWord, getSize, getUpperDoubleQuadWord, getWord, setByte, setDoubleWord, setLowerDoubleQuadWord, setQuadWord, setUpperDoubleQuadWord, setWord

Methods inherited from class dioscuri.module.cpu32.AbstractMemory

clear, clearArray, clearArray, getDoubleWord, getDoubleWordInBytes, getQuadWordInBytes, getWord, getWordInBytes, setDoubleWordInBytes, setQuadWordInBytes, setWordInBytes

Methods inherited from class dioscuri.module.cpu32.Memory

isAllocated

Methods inherited from class java.lang.Object

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

Field Detail

SYS_RAM_SIZE

public static final int SYS_RAM_SIZE

See Also:

Constant Field Values

UNCONNECTED

public static final Memory UNCONNECTED

Constructor Detail

PhysicalAddressSpace

public PhysicalAddressSpace()

Method Detail

dumpState

public void dumpState(java.io.DataOutput output)
               throws java.io.IOException

Specified by:

dumpState in interface HardwareComponent

Parameters:

output -

Throws:

java.io.IOException

loadState

public void loadState(java.io.DataInput input)
               throws java.io.IOException

Specified by:

loadState in interface HardwareComponent

Parameters:

input -

Throws:

java.io.IOException

setGateA20State

public void setGateA20State(boolean value)

Parameters:

value -

getGateA20State

public boolean getGateA20State()

Returns:

-

getAllocatedBufferSize

public int getAllocatedBufferSize()

Returns:

-

getReadMemoryBlockAt

public Memory getReadMemoryBlockAt(int offset)

Specified by:

getReadMemoryBlockAt in class AddressSpace

Parameters:

offset -

Returns:

-

getWriteMemoryBlockAt

public Memory getWriteMemoryBlockAt(int offset)

Specified by:

getWriteMemoryBlockAt in class AddressSpace

Parameters:

offset -

Returns:

-

execute

public int execute(Processor cpu,
                   int offset)

Specified by:

execute in class Memory

Parameters:

cpu -

offset -

Returns:

-

decodeCodeBlockAt

public CodeBlock decodeCodeBlockAt(Processor cpu,
                                   int offset)

Specified by:

decodeCodeBlockAt in class Memory

Parameters:

cpu -

offset -

Returns:

-

clear

public void clear()

Specified by:

clear in interface ByteArray

Specified by:

clear in class AddressSpace

unmap

public void unmap(int start,
                  int length)

Parameters:

start -

length -

mapMemoryRegion

public void mapMemoryRegion(Memory underlying,
                            int start,
                            int length)

Parameters:

underlying -

start -

length -

allocateMemory

public void allocateMemory(int start,
                           Memory block)

Parameters:

start -

block -

reset

public boolean reset()

Specified by:

reset in interface HardwareComponent

Returns:

-

updated

public boolean updated()

Specified by:

updated in interface HardwareComponent

Specified by:

updated in class AddressSpace

Returns:

-

updateComponent

public void updateComponent(HardwareComponent component)

Specified by:

updateComponent in interface HardwareComponent

Parameters:

component -

initialised

public boolean initialised()

Specified by:

initialised in interface HardwareComponent

Returns:

-

acceptComponent

public void acceptComponent(HardwareComponent component)

Specified by:

acceptComponent in interface HardwareComponent

Parameters:

component -

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

timerCallback

public void timerCallback()

Specified by:

timerCallback in interface HardwareComponent