35 lines
972 B
Java
35 lines
972 B
Java
|
package processor.pipeline;
|
||
|
|
|
||
|
|
import processor.Processor;
|
||
|
|
|
||
|
|
public class InstructionFetch {
|
||
|
|
|
||
|
|
Processor containingProcessor;
|
||
|
|
IF_EnableLatchType IF_EnableLatch;
|
||
|
|
IF_OF_LatchType IF_OF_Latch;
|
||
|
|
EX_IF_LatchType EX_IF_Latch;
|
||
|
|
|
||
|
|
public InstructionFetch(Processor containingProcessor, IF_EnableLatchType iF_EnableLatch, IF_OF_LatchType iF_OF_Latch, EX_IF_LatchType eX_IF_Latch)
|
||
|
|
{
|
||
|
|
this.containingProcessor = containingProcessor;
|
||
|
|
this.IF_EnableLatch = iF_EnableLatch;
|
||
|
|
this.IF_OF_Latch = iF_OF_Latch;
|
||
|
|
this.EX_IF_Latch = eX_IF_Latch;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void performIF()
|
||
|
|
{
|
||
|
|
if(IF_EnableLatch.isIF_enable())
|
||
|
|
{
|
||
|
|
int currentPC = containingProcessor.getRegisterFile().getProgramCounter();
|
||
|
|
int newInstruction = containingProcessor.getMainMemory().getWord(currentPC);
|
||
|
|
IF_OF_Latch.setInstruction(newInstruction);
|
||
|
|
containingProcessor.getRegisterFile().setProgramCounter(currentPC + 1);
|
||
|
|
|
||
|
|
IF_EnableLatch.setIF_enable(false);
|
||
|
|
IF_OF_Latch.setOF_enable(true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|