public string ParseInstructon(ushort instruction)
{
ParserFunctions.ParseResult result = ParserFunctions.ParseInstruction(instruction);
if (result.OpCode == 0x0)
{
if (result.Value == 0xe0)
{
return("CLS");
}
if (result.Value == 0xee)
{
return("RET");
}
}
if (result.OpCode == 0x1)
{
return(string.Format("JP 0x{0:x3}", result.Address));
}
if (result.OpCode == 0x2)
{
return(string.Format("CALL 0x{0:x3}", result.Address));
}
if (result.OpCode == 0x3)
{
return(string.Format("SE V{0:x}, 0x{1:x2}", result.X, result.Value));
}
if (result.OpCode == 0x4)
{
return(string.Format("SNE V{0:x}, 0x{1:x2}", result.X, result.Value));
}
if (result.OpCode == 0x5)
{
return(string.Format("SE V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.OpCode == 0x3)
{
return(string.Format("LD V{0:x}, 0x{1:x2}", result.X, result.Value));
}
if (result.OpCode == 0x7)
{
return(string.Format("ADD V{0:x}, 0x{1:x2}", result.X, result.Value));
}
if (result.OpCode == 0x8)
{
if (result.SubCommand == 0x0)
{
return(string.Format("LD V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.SubCommand == 0x1)
{
return(string.Format("OR V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.SubCommand == 0x2)
{
return(string.Format("AND V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.SubCommand == 0x3)
{
return(string.Format("XOR V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.SubCommand == 0x4)
{
return(string.Format("ADD V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.SubCommand == 0x5)
{
return(string.Format("SUB V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.SubCommand == 0x6)
{
return(string.Format("SHR V{0:x}", result.X));
}
if (result.SubCommand == 0x7)
{
return(string.Format("SUBN V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.SubCommand == 0xe)
{
return(string.Format("SHL V{0:x}", result.X));
}
}
if (result.OpCode == 0x9)
{
return(string.Format("SNE V{0:x}, V{1:x}", result.X, result.Y));
}
if (result.OpCode == 0xa)
{
return(string.Format("LD I, 0x{0:x3}", result.Address));
}
if (result.OpCode == 0xb)
{
return(string.Format("JP V0, 0x{0:x3}", result.Address));
}
if (result.OpCode == 0xc)
{
return(string.Format("RND V{0:x}, 0x{1:x2}", result.X, result.Value));
}
if (result.OpCode == 0xd)
{
return(string.Format("DRW V{0:x}, V{1:x}, 0x{2:x}", result.X, result.Y, result.SubCommand));
}
if (result.OpCode == 0xe)
{
if ((instruction & 0xff) == 0x9e)
{
return(string.Format("SKP V{0:x}", result.X));
}
if ((instruction & 0xff) == 0xa1)
{
return(string.Format("SKNP V{0:x}", result.X));
}
}
if (result.OpCode == 0xf)
{
if ((instruction & 0xff) == 0x07)
{
return(string.Format("LD V{0:x}, DT", result.X));
}
if ((instruction & 0xff) == 0x0a)
{
return(string.Format("LD V{0:x}, K", result.X));
}
if ((instruction & 0xff) == 0x15)
{
return(string.Format("LD DT, V{0:x}", result.X));
}
if ((instruction & 0xff) == 0x18)
{
return(string.Format("LD ST, V{0:x}", result.X));
}
if ((instruction & 0xff) == 0x1E)
{
return(string.Format("ADD I, V{0:x}", result.X));
}
if ((instruction & 0xff) == 0x29)
{
return(string.Format("LD F, V{0:x}", result.X));
}
if ((instruction & 0xff) == 0x33)
{
return(string.Format("LD B, V{0:x}", result.X));
}
if ((instruction & 0xff) == 0x55)
{
return(string.Format("LD [I], V{0:x}", result.X));
}
if ((instruction & 0xff) == 0x65)
{
return(string.Format("LD V{0:x}, [I]", result.X));
}
}
return("");
}
