public static int LD_IY_nn_mem(IZ80CPU cpu, byte[] instruction)
{
var nn = Utilities.LETo16Bit(instruction[2], instruction[3]);
cpu.Registers.IY = cpu.ReadWord(nn);
return(20);
}
public static int LD_HL_nn_mem(IZ80CPU cpu, byte[] instruction)
{
var nn = Utilities.LETo16Bit(instruction[1], instruction[2]);
cpu.Registers.HL = cpu.ReadWord(nn);
return(16);
}
public static int LD_dd_nn_mem(IZ80CPU cpu, byte[] instruction)
{
var dst = instruction[1].ExtractBits(4, 2);
var nn = Utilities.LETo16Bit(instruction[2], instruction[3]);
var word = cpu.ReadWord(nn);
WriteWordToCpuRegister_BC_DE_HL_SP(cpu, dst, word);
return(20);
}