case 0x24: //SUB A-B - Regsiter subtracted to Accumulator with Carry - completed during week 1

			//Subtracts registers to accumulator
			temp_word = (WORD)Registers[REGISTER_A] - (WORD)Registers[REGISTER_B];
			if ((Flags & FLAG_C) != 0)
			{
				temp_word--;
			}

			if (temp_word >= 0x100)
			{
				Flags = Flags | FLAG_C; // set carry flag
			}
			else
			{
				Flags = Flags & (0xff - FLAG_C); //Clear carry flag
			}
			//Sets flags
			set_flag_n(temp_word);
			set_flag_z(temp_word);
			set_flag_v(Registers[REGISTER_A], -Registers[REGISTER_B], temp_word);
			//Stores into accumulator
			Registers[REGISTER_A] = temp_word;


			break;

		case 0x34: //SUB A-C - Regsiter subtracted to Accumulator with Carry - completed during week 1

			//Subtracts registers to accumulator
			temp_word = (WORD)Registers[REGISTER_A] - (WORD)Registers[REGISTER_C];
			if ((Flags & FLAG_C) != 0)
			{
				temp_word--;
			}

			if (temp_word >= 0x100)
			{
				Flags = Flags | FLAG_C; // set carry flag
			}
			else
			{
				Flags = Flags & (0xff - FLAG_C); //Clear carry flag
			}
			//Sets flags
			set_flag_n(temp_word);
			set_flag_z(temp_word);
			set_flag_v(Registers[REGISTER_A], -Registers[REGISTER_C], temp_word);
			//Stores into accumulator
			Registers[REGISTER_A] = temp_word;
			break;

		case 0x44: //SUB A-D - Regsiter subtracted to Accumulator with Carry - completed during week 1

			//Subtracts registers to accumulator
			temp_word = (WORD)Registers[REGISTER_A] - (WORD)Registers[REGISTER_D];
			if ((Flags & FLAG_C) != 0)
			{
				temp_word--;
			}

			if (temp_word >= 0x100)
			{
				Flags = Flags | FLAG_C; // set carry flag
			}
			else
			{
				Flags = Flags & (0xff - FLAG_C); //Clear carry flag
			}
			//Sets flags
			set_flag_n(temp_word);
			set_flag_z(temp_word);
			set_flag_v(Registers[REGISTER_A], -Registers[REGISTER_D], temp_word);
			//Stores into accumulator
			Registers[REGISTER_A] = temp_word;

			break;

		case 0x54: //SUB A-E - Regsiter subtracted to Accumulator with Carry - completed during week 1

			//Subtracts registers to accumulator
			temp_word = (WORD)Registers[REGISTER_A] - (WORD)Registers[REGISTER_E];
			if ((Flags & FLAG_C) != 0)
			{
				temp_word--;
			}

			if (temp_word >= 0x100)
			{
				Flags = Flags | FLAG_C; // set carry flag
			}
			else
			{
				Flags = Flags & (0xff - FLAG_C); //Clear carry flag
			}
			//Sets flags
			set_flag_n(temp_word);
			set_flag_z(temp_word);
			set_flag_v(Registers[REGISTER_A], -Registers[REGISTER_E], temp_word);
			//Stores into accumulator
			Registers[REGISTER_A] = temp_word;

			break;

		case 0x64: //SUB A-F - Regsiter subtracted to Accumulator with Carry - completed during week 1

			//Subtracts registers to accumulator
			temp_word = (WORD)Registers[REGISTER_A] - (WORD)Registers[REGISTER_F];
			if ((Flags & FLAG_C) != 0)
			{
				temp_word--;
			}

			if (temp_word >= 0x100)
			{
				Flags = Flags | FLAG_C; // set carry flag
			}
			else
			{
				Flags = Flags & (0xff - FLAG_C); //Clear carry flag
			}
			//Sets flags
			set_flag_n(temp_word);
			set_flag_z(temp_word);
			set_flag_v(Registers[REGISTER_A], -Registers[REGISTER_F], temp_word);
			//Stores into accumulator
			Registers[REGISTER_A] = temp_word;

			break;
		///////////END SUB///////////