dioscuri.module.cpu32
Class DMAController

java.lang.Object
  dioscuri.module.AbstractModule
      dioscuri.module.cpu32.DMAController

All Implemented Interfaces:

Addressable, Module, HardwareComponent, Hibernatable, IOPortCapable

public class DMAController
extends AbstractModule
implements IOPortCapable, Addressable, HardwareComponent

Author:

Bram Lohman, Bart Kiers

Nested Class Summary

Nested classes/interfaces inherited from interface dioscuri.interfaces.Module

Module.Type

Field Summary

Fields inherited from class dioscuri.module.AbstractModule

type

Constructor Summary

DMAController(boolean highPageEnable, boolean zeroth)

Method Summary

void	acceptComponent(HardwareComponent component)
void	dumpState(java.io.DataOutput output)
int	getChannelMode(int channelNumber)
byte	getIOPortByte(int portAddress)
byte[]	getIOPortDoubleWord(int portAddress)
byte[]	getIOPortWord(int portAddress)
void	holdDREQ(int channelNumber)
boolean	initialised()
int	ioPortReadByte(int address)
int	ioPortReadLong(int address)
int	ioPortReadWord(int address)
int[]	ioPortsRequested()
void	ioPortWriteByte(int address, int data)
void	ioPortWriteLong(int address, int data)
void	ioPortWriteWord(int address, int data)
boolean	isFirst()
void	loadState(java.io.DataInput input)
int	readMemory(int channelNumber, byte[] buffer, int bufferOffset, int position, int length)
void	registerChannel(int channelNumber, DMATransferCapable device)
void	releaseDREQ(int channelNumber)
boolean	reset() Reset all parameters of module.
void	runTransfers()
void	setIOPortByte(int portAddress, byte data)
void	setIOPortDoubleWord(int portAddress, byte[] dataDoubleWord)
void	setIOPortWord(int portAddress, byte[] dataWord)
void	timerCallback()
java.lang.String	toString()
void	updateComponent(HardwareComponent component)
boolean	updated()
int	writeMemory(int channelNumber, byte[] buffer, int bufferOffset, int position, int length)

Methods inherited from class dioscuri.module.AbstractModule

getConnection, getConnections, getDebugMode, getDump, getExpectedConnections, getType, isConnected, setConnection, setDebugMode, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface dioscuri.interfaces.Module

getConnection, getConnections, getDebugMode, getDump, getExpectedConnections, getType, isConnected, setConnection, setDebugMode, start, stop

Constructor Detail

DMAController

public DMAController(boolean highPageEnable,
                     boolean zeroth)

Parameters:

highPageEnable -

zeroth -

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

isFirst

public boolean isFirst()

Returns:

-

reset

public boolean reset()

Reset all parameters of module.

Specified by:

reset in interface Module

Specified by:

reset in interface HardwareComponent

Specified by:

reset in class AbstractModule

Returns:

true iff the AbstractModule was reset properly.

See Also:

AbstractModule

ioPortWriteByte

public void ioPortWriteByte(int address,
                            int data)

Specified by:

ioPortWriteByte in interface IOPortCapable

Parameters:

address -

data -

ioPortWriteWord

public void ioPortWriteWord(int address,
                            int data)

Specified by:

ioPortWriteWord in interface IOPortCapable

Parameters:

address -

data -

ioPortWriteLong

public void ioPortWriteLong(int address,
                            int data)

Specified by:

ioPortWriteLong in interface IOPortCapable

Parameters:

address -

data -

ioPortReadByte

public int ioPortReadByte(int address)

Specified by:

ioPortReadByte in interface IOPortCapable

Parameters:

address -

Returns:

-

ioPortReadWord

public int ioPortReadWord(int address)

Specified by:

ioPortReadWord in interface IOPortCapable

Parameters:

address -

Returns:

-

ioPortReadLong

public int ioPortReadLong(int address)

Specified by:

ioPortReadLong in interface IOPortCapable

Parameters:

address -

Returns:

-

ioPortsRequested

public int[] ioPortsRequested()

Specified by:

ioPortsRequested in interface IOPortCapable

Returns:

-

runTransfers

public void runTransfers()

getChannelMode

public int getChannelMode(int channelNumber)

Parameters:

channelNumber -

Returns:

-

holdDREQ

public void holdDREQ(int channelNumber)

Parameters:

channelNumber -

releaseDREQ

public void releaseDREQ(int channelNumber)

Parameters:

channelNumber -

registerChannel

public void registerChannel(int channelNumber,
                            DMATransferCapable device)

Parameters:

channelNumber -

device -

readMemory

public int readMemory(int channelNumber,
                      byte[] buffer,
                      int bufferOffset,
                      int position,
                      int length)

Parameters:

channelNumber -

buffer -

bufferOffset -

position -

length -

Returns:

-

writeMemory

public int writeMemory(int channelNumber,
                       byte[] buffer,
                       int bufferOffset,
                       int position,
                       int length)

Parameters:

channelNumber -

buffer -

bufferOffset -

position -

length -

Returns:

-

initialised

public boolean initialised()

Specified by:

initialised in interface HardwareComponent

Returns:

-

updated

public boolean updated()

Specified by:

updated in interface HardwareComponent

Returns:

-

acceptComponent

public void acceptComponent(HardwareComponent component)

Specified by:

acceptComponent in interface HardwareComponent

Parameters:

component -

updateComponent

public void updateComponent(HardwareComponent component)

Specified by:

updateComponent in interface HardwareComponent

Parameters:

component -

timerCallback

public void timerCallback()

Specified by:

timerCallback in interface HardwareComponent

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getIOPortByte

public byte getIOPortByte(int portAddress)
                   throws ModuleException,
                          UnknownPortException,
                          WriteOnlyPortException

Specified by:

getIOPortByte in interface Addressable

Returns:

Throws:

ModuleException

UnknownPortException

WriteOnlyPortException

See Also:

Addressable

getIOPortWord

public byte[] getIOPortWord(int portAddress)
                     throws ModuleException,
                            UnknownPortException,
                            WriteOnlyPortException

Specified by:

getIOPortWord in interface Addressable

Returns:

Throws:

ModuleException

UnknownPortException

WriteOnlyPortException

See Also:

Addressable

getIOPortDoubleWord

public byte[] getIOPortDoubleWord(int portAddress)
                           throws ModuleException,
                                  UnknownPortException,
                                  WriteOnlyPortException

Specified by:

getIOPortDoubleWord in interface Addressable

Returns:

Throws:

ModuleException

UnknownPortException

WriteOnlyPortException

See Also:

Addressable

setIOPortByte

public void setIOPortByte(int portAddress,
                          byte data)
                   throws ModuleException,
                          UnknownPortException

Specified by:

setIOPortByte in interface Addressable

Throws:

ModuleException

UnknownPortException

See Also:

Addressable

setIOPortWord

public void setIOPortWord(int portAddress,
                          byte[] dataWord)
                   throws ModuleException,
                          UnknownPortException

Specified by:

setIOPortWord in interface Addressable

Throws:

ModuleException

UnknownPortException

See Also:

Addressable

setIOPortDoubleWord

public void setIOPortDoubleWord(int portAddress,
                                byte[] dataDoubleWord)
                         throws ModuleException,
                                UnknownPortException

Specified by:

setIOPortDoubleWord in interface Addressable

Throws:

ModuleException

UnknownPortException

See Also:

Addressable