li.cil.tis3d.common.module.execution

Class MachineState

java.lang.Object

li.cil.tis3d.common.module.execution.MachineState

public final class MachineState
extends java.lang.Object

Virtual machine state for executing TIS-100 assembly.

Field Summary

Fields

Modifier and Type	Field and Description
short	acc Accumulator register.
short	bak Backup register.
java.lang.String[]	code Lines of original code this state was compiled from.
java.util.List<Instruction>	instructions List of instructions (the program) stored in the machine.
java.util.HashMap<java.lang.String,java.lang.Integer>	labels List of labels and associated addresses.
java.util.Optional<Port>	last The port last read from.
java.util.HashMap<java.lang.Integer,java.lang.Integer>	lineNumbers Instruction address to line number mapping.
int	pc Program counter, i.e.

Constructor Summary

Constructors

Constructor and Description
MachineState()

Method Summary

Modifier and Type	Method and Description
void	clear() Hard reset the machine state.
boolean	finishCycle() Finishes an execution cycle, ensuring values of the state are valid ones and returning whether the internal state changed since the last call to this method.
void	readFromNBT(net.minecraft.nbt.CompoundTag nbt)
void	reset() Soft reset the machine state.
void	writeToNBT(net.minecraft.nbt.CompoundTag nbt)

Methods inherited from class java.lang.Object

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

Field Detail

pc

public int pc

Program counter, i.e. the index of the next operation to execute.

acc

public short acc

Accumulator register.

bak

public short bak

Backup register.

last

public java.util.Optional<Port> last

The port last read from.

code

public java.lang.String[] code

Lines of original code this state was compiled from.

instructions

public final java.util.List<Instruction> instructions

List of instructions (the program) stored in the machine.

labels

public final java.util.HashMap<java.lang.String,java.lang.Integer> labels

List of labels and associated addresses.

lineNumbers

public final java.util.HashMap<java.lang.Integer,java.lang.Integer> lineNumbers

Instruction address to line number mapping.

Constructor Detail

MachineState

public MachineState()

Method Detail

finishCycle

public boolean finishCycle()

Finishes an execution cycle, ensuring values of the state are valid ones and returning whether the internal state changed since the last call to this method.

Returns:

true if the internal state had changed since the last call.

reset

public void reset()

Soft reset the machine state.

clear

public void clear()

Hard reset the machine state.

readFromNBT

public void readFromNBT(net.minecraft.nbt.CompoundTag nbt)

writeToNBT

public void writeToNBT(net.minecraft.nbt.CompoundTag nbt)