private void Andi(Instruction_I instruction)
{
int r1 = _registers.Read(instruction.RS).AsInt();
int result = (r1 & instruction.Immediate);
_registers.Write(instruction.RT, result.AsBytes());
}
private void Lui(Instruction_I instruction)
{
int toLoad = instruction.Immediate << 16;
var bytes = toLoad.AsBytes();
_registers.Write(instruction.RT, bytes);
}
private void Sw(Instruction_I instruction)
{
int register = _registers.Read(instruction.RS).AsInt();
int address = register + instruction.Immediate;
var word = _registers.Read(instruction.RT).Reverse().ToArray();
_memory.Write(address, word);
}
private void Addi(Instruction_I instruction)
{
int registerValue = _registers.Read(instruction.RS).AsInt();
int imm = instruction.Immediate;
var result = (registerValue + imm).AsBytes();
_registers.Write(instruction.RT, result);
}
private void Ori(Instruction_I instruction)
{
var register = _registers.Read(instruction.RS).AsInt();
var result = register | instruction.Immediate;
var bytes = result.AsBytes();
_registers.Write(instruction.RT, bytes);
}
private int Bne(Instruction_I instruction, int pc)
{
int r1 = _registers.Read(instruction.RS).AsInt();
int r2 = _registers.Read(instruction.RT).AsInt();
if (r1 != r2)
{
return(pc + 4 + instruction.Immediate * 4);
}
return(pc + 4);
}
private void Addiu(Instruction_I instruction)
{
int result = _registers.Read(instruction.RS).AsInt() + instruction.Immediate;
_registers.Write(instruction.RT, result.AsBytes());
}
