Method IOWrite

source/SNESMAX.cpp:98–144

}

BYTE __stdcall SNESMAXCard::IOWrite(WORD pc, WORD addr, BYTE bWrite, BYTE value, ULONG nExecutedCycles)
{
	const UINT slot = ((addr & 0xff) >> 4) - 8;
	SNESMAXCard* pCard = (SNESMAXCard*)MemGetSlotParameters(slot);

	UINT xAxis = 0;
	UINT yAxis = 0;

	JOYINFOEX infoEx;	
	infoEx.dwSize = sizeof(infoEx);
	infoEx.dwFlags = JOY_RETURNPOV | JOY_RETURNBUTTONS;

	UINT& controller1Buttons = pCard->m_controller1Buttons;	// ref to object's controller1Buttons
	UINT& controller2Buttons = pCard->m_controller2Buttons;	// ref to object's controller2Buttons

	switch (addr & 0xF)
	{
	case 0: // Latch
		pCard->m_buttonIndex = 0;
		controller1Buttons = 0;
		controller2Buttons = 0;

		if (GetJoystick1() >= 0 && joyGetPosEx(GetJoystick1(), &infoEx) == JOYERR_NOERROR)
			controller1Buttons = pCard->GetControllerButtons(JOYSTICKID1, infoEx, pCard->m_altControllerType[0]);

		controller1Buttons = ~controller1Buttons;

		if (GetJoystick2() >= 0 && joyGetPosEx(GetJoystick2(), &infoEx) == JOYERR_NOERROR)
			controller2Buttons = pCard->GetControllerButtons(JOYSTICKID2, infoEx, pCard->m_altControllerType[1]);

		controller2Buttons = ~controller2Buttons;

		break;
	case 1: // Clock
		if (pCard->m_buttonIndex <= NUM_BUTTONS)	// NB. 17 bits (where last bit is: Controller plugged in status)
		{
			pCard->m_buttonIndex++;
			controller1Buttons = controller1Buttons >> 1;
			controller2Buttons = controller2Buttons >> 1;
		}
		break;
	default:
		break;
	}

	return 0;
}

UINT SNESMAXCard::GetControllerButtons(UINT joyNum, JOYINFOEX& infoEx, bool altControllerType)
{