Function JoyReadButton

source/Joystick.cpp:599–658

}

BYTE __stdcall JoyReadButton(WORD pc, WORD address, BYTE, BYTE, ULONG nExecutedCycles)
{
	address &= 0xFF;

	if(joyinfo[joytype[0]] == DEVICE_JOYSTICK)
		CheckJoystick0();
	if((joyinfo[joytype[1]] == DEVICE_JOYSTICK) || (joyinfo[joytype[1]] == DEVICE_JOYSTICK_THUMBSTICK2))
		CheckJoystick1();

	if (g_bJoyportEnabled)
	{
		// Some extra logic to stop the Joyport forcing a self-test at CTRL+RESET
		if ((address != 0x62) || (address == 0x62 && pc != 0xC242 && pc != 0xC2BE))	// Original //e ($C242), Enhanced //e ($C2BE) 
			return JoyportReadButton(address, nExecutedCycles);
	}

	const bool swapButtons0and1 = GetPropertySheet().GetButtonsSwapState();

	BOOL pressed = FALSE;
	switch (address)
	{
		case 0x61:
			{
				pressed = !swapButtons0and1 ? CheckButton0Pressed() : CheckButton1Pressed();
				const UINT button0 = !swapButtons0and1 ? 0 : 1;
				DoAutofire(button0, pressed);
				if (CopyProtectionDonglePB0() >= 0)				//If a copy protection dongle needs PB0, this overrides the joystick
					pressed = CopyProtectionDonglePB0();
			}
			break;

		case 0x62:
			{
				pressed = !swapButtons0and1 ? CheckButton1Pressed() : CheckButton0Pressed();
				const UINT button1 = !swapButtons0and1 ? 1 : 0;
				DoAutofire(button1, pressed);
				if (CopyProtectionDonglePB1() >= 0)				//If a copy protection dongle needs PB1, this overrides the joystick
					pressed = CopyProtectionDonglePB1();
			}
			break;

		case 0x63:
			if (CopyProtectionDonglePB2() >= 0)					//If a copy protection dongle needs PB2, this overrides the joystick
				pressed = CopyProtectionDonglePB2();
			else if (IS_APPLE2 && (joyinfo[joytype[1]] == DEVICE_NONE))
			{
				// Apple II/II+ with no joystick has the "SHIFT key mod"
				// See Sather's Understanding The Apple II p7-36
				pressed = !(GetKeyState(VK_SHIFT) < 0);
			}
			else
			{
				pressed = (joybutton[2] || setbutton[2]);
				DoAutofire(2, pressed);
			}
			break;
	}