/// <summary>
/// Reads the next instruction from memory.
/// </summary>
/// <returns>The disassembled instruction.</returns>
public void ReadInstruction(ref ushort location, Z80Instruction outInstruction)
{
ushort offset = location;
byte code = _memory.ReadByte(location++);
var opcode = code != Z80OpCodes.ExtendedTableOpcode
? Z80OpCodes.SingleByteOpCodes[code]
: Z80OpCodes.PrefixedOpCodes[_memory.ReadByte(location++)];
var operands = _memory.ReadBytes(location, opcode.OperandLength);
location += (ushort)operands.Length;
outInstruction.Set(offset, opcode, operands);
}
/// <summary>
/// Reads the next instruction from memory.
/// </summary>
/// <returns>The disassembled instruction.</returns>
public Z80Instruction ReadNextInstruction()
{
ushort offset = Position;
byte code = _memory.ReadByte(Position++);
var opcode = code != 0xCB
? Z80OpCodes.SingleByteOpCodes[code]
: Z80OpCodes.PrefixedOpCodes[_memory.ReadByte(Position++)];
byte[] operand = _memory.ReadBytes(Position, opcode.OperandLength);
Position += (ushort)operand.Length;
var instruction = new Z80Instruction(offset, opcode, operand);
return(instruction);
}
