hades.models.pic
Class PicStack

java.lang.Object
  hades.models.pic.PicStack

All Implemented Interfaces:

PicMemory

public class PicStack

extends java.lang.Object

implements PicMemory

PicStack - Hardware stack for Call/Return.

Field Summary

PicBreakPoint	bp
PicWordReg[]	stack
int	stackPtr
int	stackSize
int	wordWidth

Constructor Summary

PicStack(PicBreakPoint newBp)
Default-Stack has 8 entries with 13 bit

PicStack(PicBreakPoint newBp, int newSize, int bitWidth)

Method Summary

int	getMemorySize() Capacity of the memory in words
int	getStackPointer()
int	getWordWidth() Witdh of one word in bits
int	pop() Get a value from the stack
void	por()
void	push(int value) Put a value into the stack
int	readMemory(int address) Read a word from the memory
int	readMemoryOld(int address)
void	reset() Clear the stack
void	writeMemory(int address, int word) Write a word into the memory

Methods inherited from class java.lang.Object

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

Field Detail

stack

public PicWordReg[] stack

stackPtr

public int stackPtr

stackSize

public int stackSize

wordWidth

public int wordWidth

bp

public PicBreakPoint bp

Constructor Detail

PicStack

public PicStack(PicBreakPoint newBp)

Default-Stack has 8 entries with 13 bit

PicStack

public PicStack(PicBreakPoint newBp,
                int newSize,
                int bitWidth)

Method Detail

por

public void por()

reset

public void reset()

Clear the stack

push

public void push(int value)

Put a value into the stack

pop

public int pop()

Get a value from the stack

getWordWidth

public int getWordWidth()

Description copied from interface: PicMemory

Witdh of one word in bits

Specified by:

getWordWidth in interface PicMemory

getMemorySize

public int getMemorySize()

Description copied from interface: PicMemory

Capacity of the memory in words

Specified by:

getMemorySize in interface PicMemory

readMemoryOld

public int readMemoryOld(int address)

readMemory

public int readMemory(int address)

Description copied from interface: PicMemory

Read a word from the memory

Specified by:

readMemory in interface PicMemory

writeMemory

public void writeMemory(int address,
                        int word)

Description copied from interface: PicMemory

Write a word into the memory

Specified by:

writeMemory in interface PicMemory

getStackPointer

public int getStackPointer()