dioscuri.module
Class ModuleDMA

java.lang.Object
  dioscuri.module.AbstractModule
      dioscuri.module.ModuleDMA

All Implemented Interfaces:

Addressable, Module

Direct Known Subclasses:

DMA

public abstract class ModuleDMA
extends AbstractModule
implements Addressable

Interface representing a generic DMA module.

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

ModuleDMA()

Method Summary

abstract void	acknowledgeBusHold() Control has been relinquished of the system busses DMA now has control over the system busses, so the highest priority DMA channel that scheduled a request is located and after setting up the necessary parameters (address, count, memory), the DMA transfer is initiated
abstract boolean	isTerminalCountReached()
abstract boolean	registerDMAChannel(int chanNum, DMA16Handler dma16handler)
abstract boolean	registerDMAChannel(int chanNum, DMA8Handler dma8handler)
abstract void	setDMARequest(int chanNum, boolean request) Sets the DMA Requests in the corresponding controller's status register, and initiates the handling of Hold Requests

Methods inherited from class dioscuri.module.AbstractModule

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface dioscuri.interfaces.Addressable

getIOPortByte, getIOPortDoubleWord, getIOPortWord, setIOPortByte, setIOPortDoubleWord, setIOPortWord

Methods inherited from interface dioscuri.interfaces.Module

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

Constructor Detail

ModuleDMA

public ModuleDMA()

Method Detail

registerDMAChannel

public abstract boolean registerDMAChannel(int chanNum,
                                           DMA8Handler dma8handler)

Parameters:

chanNum -

dma8handler -

Returns:

registerDMAChannel

public abstract boolean registerDMAChannel(int chanNum,
                                           DMA16Handler dma16handler)

Parameters:

chanNum -

dma16handler -

Returns:

setDMARequest

public abstract void setDMARequest(int chanNum,
                                   boolean request)

Sets the DMA Requests in the corresponding controller's status register, and initiates the handling of Hold Requests

Parameters:

chanNum - Channel requesting a DMA transfer

request - Set request (true); clear request (false)

acknowledgeBusHold

public abstract void acknowledgeBusHold()

Control has been relinquished of the system busses
DMA now has control over the system busses, so the highest priority DMA channel that scheduled a request is located and after setting up the necessary parameters (address, count, memory), the DMA transfer is initiated

isTerminalCountReached

public abstract boolean isTerminalCountReached()

Returns: