dioscuri.module.dma
Class DMA8Handler

java.lang.Object
  dioscuri.module.dma.DMA8Handler

Direct Known Subclasses:

DMA8Handler

public abstract class DMA8Handler
extends java.lang.Object

Handler for the master DMA controller, providing implementations for 8-bit read and write functionality
This handler will be registered with the DMA class to provide device-specific methods for reading (memory -> device) and writing (device -> memory) a byte via DMA.

Field Summary

protected java.lang.String

owner

Constructor Summary

DMA8Handler()

Method Summary

abstract void	dma8ReadFromMem(byte data) Device-specific implementation of the 8-bit DMA read functionality. This provides a way for DMA to pass a byte read from memory (by way of DMA request) to the device for further processing.
abstract byte	dma8WriteToMem() Device-specific implementation of the 8-bit DMA write functionality. This provides a way for DMA to write a byte to memory (by way of DMA request) passed from the device.

Methods inherited from class java.lang.Object

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

Field Detail

owner

protected java.lang.String owner

Constructor Detail

DMA8Handler

public DMA8Handler()

Method Detail

dma8ReadFromMem

public abstract void dma8ReadFromMem(byte data)

Device-specific implementation of the 8-bit DMA read functionality.
This provides a way for DMA to pass a byte read from memory (by way of DMA request) to the device for further processing.

Parameters:

data - Byte from memory that is passed to the device for handling

dma8WriteToMem

public abstract byte dma8WriteToMem()

Device-specific implementation of the 8-bit DMA write functionality.
This provides a way for DMA to write a byte to memory (by way of DMA request) passed from the device.

Returns:

Byte from device that will be written to memory