com.sun.squawk.peripheral
Interface INorFlashSector

All Known Implementing Classes:

SimulatedNorFlashSector

public interface INorFlashSector

Define a segment of memory which is defined as being of type NOR Flash. The read-only mode of NOR memories is similar to reading from a common memory, provided address and data bus is mapped correctly, so NOR flash memory is much like any address-mapped memory. NOR flash memories can be used as execute-in-place memory (XIP), meaning it behaves as a ROM memory mapped to a certain address. A NOR flash sector can be completely erased, setting all bits to 1s. Writing simply sets some bits from 1 to 0. Setting a bit from 0 to 1, requires the complete sector to be erased.

Field Summary

static int	RMS_PURPOSED
static int	SYSTEM_PURPOSED
static int	USER_PURPOSED

Method Summary

void	erase()
void	getBytes(int memoryOffset, byte[] buffer, int bufferOffset, int length)
byte	getErasedValue()
int	getPurpose()
int	getSize()
Address	getStartAddress()
void	setBytes(int memoryOffset, byte[] buffer, int bufferOffset, int length)

Field Detail

USER_PURPOSED

static final int USER_PURPOSED

See Also:

Constant Field Values

SYSTEM_PURPOSED

static final int SYSTEM_PURPOSED

See Also:

Constant Field Values

RMS_PURPOSED

static final int RMS_PURPOSED

See Also:

Constant Field Values

Method Detail

erase

void erase()

getBytes

void getBytes(int memoryOffset,
              byte[] buffer,
              int bufferOffset,
              int length)

getErasedValue

byte getErasedValue()

getPurpose

int getPurpose()

getSize

int getSize()

getStartAddress

Address getStartAddress()

setBytes

void setBytes(int memoryOffset,
              byte[] buffer,
              int bufferOffset,
              int length)