ca.disassembly.invaders
Class I8080

java.lang.Object
  ca.disassembly.invaders.I8080

public abstract class I8080
extends java.lang.Object

Interpreting I8080 CPU emulator.

Field Summary

int	A
int	A1
int	B
int	B1
int	C
int	C1
int	cycles_left
int	D
int	D1
boolean	debugDisabled
int	debugFrom
int	debugLevel
int	debugMemLoc
int	debugMemVal
boolean	debugSelectMemEqVal
boolean	debugSelectStart
int	debugSkipped
int	debugUntil
int	E
int	E1
int	error
int	F
int	F1
int	H
int	H1
int	I
int	I_Vector
boolean	IFF0
boolean	IFF1
int	ignoreBreakpoint
int	IM
boolean	IRQ
int	L
int	L1
java.lang.String	logFile
boolean	NMI
int	PC
int	R
int	SP
boolean	state_HALT

Constructor Summary

I8080()
Default constructor debugging disabled Use this constructor for use in applets

Method Summary

void	exec(int num_cycles) Execute a number of clock cycles
int	getCyclesLeft()
int	getDebug()
long	getInstruction() returns the currently excecuted instruction
java.lang.String	getTag()
protected abstract int	inPort(int port)
void	interrupt(int type, boolean irq)
protected abstract void	outPort(int port, int value)
protected int	read16(int address)
protected int	read16arg(int address)
protected abstract int	read8(int address)
protected int	read8arg(int address)
protected int	read8opc(int address)
void	reset() Reset CPU - Only resets the registers
void	setDebug(int debugLevel) Sets the required debuglevel (if enabled):
void	setProperty(int property, int value)
void	setTag(java.lang.String tag)
protected void	write16(int address, int value)
protected void	write16fast(int address, int value)
protected void	write8fast(int address, int value)

Methods inherited from class java.lang.Object

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

Field Detail

A

public int A

F

public int F

B

public int B

C

public int C

D

public int D

E

public int E

H

public int H

L

public int L

I

public int I

R

public int R

A1

public int A1

F1

public int F1

B1

public int B1

C1

public int C1

D1

public int D1

E1

public int E1

H1

public int H1

L1

public int L1

PC

public int PC

SP

public int SP

state_HALT

public boolean state_HALT

IM

public int IM

IFF0

public boolean IFF0

IFF1

public boolean IFF1

I_Vector

public int I_Vector

IRQ

public boolean IRQ

NMI

public boolean NMI

cycles_left

public int cycles_left

logFile

public java.lang.String logFile

debugLevel

public int debugLevel

debugFrom

public int debugFrom

debugSkipped

public int debugSkipped

debugUntil

public int debugUntil

debugMemLoc

public int debugMemLoc

debugMemVal

public int debugMemVal

ignoreBreakpoint

public int ignoreBreakpoint

debugDisabled

public boolean debugDisabled

debugSelectMemEqVal

public boolean debugSelectMemEqVal

debugSelectStart

public boolean debugSelectStart

error

public int error

Constructor Detail

I8080

public I8080()

Default constructor debugging disabled Use this constructor for use in applets

Method Detail

setTag

public void setTag(java.lang.String tag)

getTag

public java.lang.String getTag()

getInstruction

public final long getInstruction()

returns the currently excecuted instruction

interrupt

public final void interrupt(int type,
                            boolean irq)

reset

public final void reset()

Reset CPU - Only resets the registers

exec

public final void exec(int num_cycles)

Execute a number of clock cycles

Parameters:

cycles - number of cycles to be excecuted

setDebug

public final void setDebug(int debugLevel)

Sets the required debuglevel (if enabled):

getDebug

public final int getDebug()

setProperty

public final void setProperty(int property,
                              int value)

getCyclesLeft

public int getCyclesLeft()

read16

protected int read16(int address)

write16

protected void write16(int address,
                       int value)

write8fast

protected void write8fast(int address,
                          int value)

read16arg

protected int read16arg(int address)

read8opc

protected int read8opc(int address)

read8arg

protected int read8arg(int address)

write16fast

protected void write16fast(int address,
                           int value)

read8

protected abstract int read8(int address)

outPort

protected abstract void outPort(int port,
                                int value)

inPort

protected abstract int inPort(int port)