dioscuri.module.fdc
Class Drive

java.lang.Object
  dioscuri.module.fdc.Drive

public class Drive
extends java.lang.Object

Author:

Bram Lohman, Bart Kiers

Field Summary

protected int	cylinder
protected int	cylinders
protected byte	dir
protected int	eot
protected int	floppyType
protected int	hds
protected int	heads
protected boolean	multiTrack
protected int	sector
protected int	sectors
protected int	sectorsPerTrack
protected int	tracks
protected boolean	writeProtected

Constructor Summary

Drive()
Drive

Method Summary

protected boolean	containsFloppy() Checks the existence of a floppy disk in drive
protected void	ejectFloppy() Ejects a floppy from the drive
protected int	getDriveType() Get type of drive
protected int	getFloppySize() Get size in bytes of floppy Returns -1 if drive is empty.
protected int	getFloppyType() Get type of floppy inserted
protected void	incrementSector() Increment current sector Note: also takes care of multitrack disks and cylinder position
protected void	insertFloppy(byte floppyType, java.io.File imageFile, boolean writeProtected) Inserts a floppy into the drive
protected boolean	isMotorRunning() Returns the state of the drive motor
protected void	readData(int offset, int totalBytes, byte[] floppyBuffer) Read data from floppy into buffer
protected boolean	reset() Reset drive All geometry parameters for sector selection are reset.
protected void	resetChangeline() Reset change line Updates DIR on bit 7
protected void	setDriveType(byte type) Set type of drive
protected void	setMotor(boolean state) Set motor status
java.lang.String	toString() Get String representation of this class
protected void	writeData(int offset, int totalBytes, byte[] floppyBuffer) Write data to floppy from buffer

Methods inherited from class java.lang.Object

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

Field Detail

eot

protected int eot

hds

protected int hds

cylinder

protected int cylinder

sector

protected int sector

floppyType

protected int floppyType

tracks

protected int tracks

heads

protected int heads

cylinders

protected int cylinders

sectorsPerTrack

protected int sectorsPerTrack

sectors

protected int sectors

writeProtected

protected boolean writeProtected

multiTrack

protected boolean multiTrack

dir

protected byte dir

Constructor Detail

Drive

public Drive()

Drive

Method Detail

reset

protected boolean reset()

Reset drive All geometry parameters for sector selection are reset.

Returns:

-

containsFloppy

protected boolean containsFloppy()

Checks the existence of a floppy disk in drive

Returns:

boolean true if drive contains a floppy, false otherwise

getDriveType

protected int getDriveType()

Get type of drive

Returns:

int drive type

setDriveType

protected void setDriveType(byte type)

Set type of drive

Parameters:

type -

setMotor

protected void setMotor(boolean state)

Set motor status

Parameters:

state -

isMotorRunning

protected boolean isMotorRunning()

Returns the state of the drive motor

Returns:

boolean true if motor is running, false otherwise

getFloppyType

protected int getFloppyType()

Get type of floppy inserted

Returns:

int type of floppy

getFloppySize

protected int getFloppySize()

Get size in bytes of floppy Returns -1 if drive is empty.

Returns:

int size of floppy, or -1 if no floppy available

insertFloppy

protected void insertFloppy(byte floppyType,
                            java.io.File imageFile,
                            boolean writeProtected)
                     throws StorageDeviceException

Inserts a floppy into the drive

Parameters:

floppyType -

imageFile -

writeProtected -

Throws:

StorageDeviceException

ejectFloppy

protected void ejectFloppy()
                    throws StorageDeviceException

Ejects a floppy from the drive

Throws:

StorageDeviceException

readData

protected void readData(int offset,
                        int totalBytes,
                        byte[] floppyBuffer)
                 throws StorageDeviceException

Read data from floppy into buffer

Parameters:

offset -

totalBytes -

floppyBuffer -

Throws:

StorageDeviceException

writeData

protected void writeData(int offset,
                         int totalBytes,
                         byte[] floppyBuffer)
                  throws StorageDeviceException

Write data to floppy from buffer

Parameters:

offset -

totalBytes -

floppyBuffer -

Throws:

StorageDeviceException

incrementSector

protected void incrementSector()

Increment current sector Note: also takes care of multitrack disks and cylinder position

resetChangeline

protected void resetChangeline()

Reset change line Updates DIR on bit 7

toString

public java.lang.String toString()

Get String representation of this class

Overrides:

toString in class java.lang.Object