C++ (Cpp) group_modeの例

コード例 #1

ファイル: i8255.c プロジェクト: AreaScout/mame-libretro

inline void i8255_device::check_interrupt(int port)
{
	switch (group_mode(port))
	{
	case MODE_1:
		switch (port_mode(port))
		{
		case MODE_INPUT:
			set_intr(port, (m_inte[port] && m_ibf[port]));
			break;

		case MODE_OUTPUT:
			set_intr(port, (m_inte[port] && m_obf[port]));
			break;
		}
		break;

	case MODE_2:
		set_intr(port, ((m_inte1 && m_obf[port]) || (m_inte2 && m_ibf[port])));
		break;
	}
}

コード例 #2

ファイル: i8255.cpp プロジェクト: crazii/mameui

void i8255_device::set_pc_bit(int bit, int state)
{
	// set output latch bit
	m_output[PORT_C] &= ~(1 << bit);
	m_output[PORT_C] |= state << bit;

	switch (group_mode(GROUP_A))
	{
	case MODE_1:
		if (port_mode(PORT_A) == MODE_OUTPUT)
		{
			switch (bit)
			{
			case 3: set_intr(PORT_A, state); break;
			case 6: set_inte(PORT_A, state); break;
			case 7: set_obf(PORT_A, state); break;
			default: break;
			}
		}
		else
		{
			switch (bit)
			{
			case 3: set_intr(PORT_A, state); break;
			case 4: set_inte(PORT_A, state); break;
			case 5: set_ibf(PORT_A, state); break;
			default: break;
			}
		}
		break;

	case MODE_2:
		switch (bit)
		{
		case 3: set_intr(PORT_A, state); break;
		case 4: set_inte2(state); break;
		case 5: set_ibf(PORT_A, state); break;
		case 6: set_inte1(state); break;
		case 7: set_obf(PORT_A, state); break;
		default: break;
		}
		break;
	}

	if (group_mode(GROUP_B) == MODE_1)
	{
		switch (bit)
		{
		case 0: set_intr(PORT_B, state); break;
		case 1:
			if (port_mode(PORT_B) == MODE_OUTPUT)
				set_obf(PORT_B, state);
			else
				set_ibf(PORT_B, state);
			break;
		case 2: set_inte(PORT_B, state); break;
		default: break;
		}
	}

	output_pc();
}

コード例 #3

ファイル: i8255.cpp プロジェクト: crazii/mameui

void i8255_device::output_pc()
{
	uint8_t data = 0;
	uint8_t mask = 0;
	uint8_t b_mask = 0x0f;

	// PC upper
	switch (group_mode(GROUP_A))
	{
	case MODE_0:
		if (port_c_upper_mode() == MODE_OUTPUT)
		{
			mask |= 0xf0;
		}
		else
		{
			// TTL inputs float high
			data |= 0xf0;
		}
		break;

	case MODE_1:
		data |= m_intr[PORT_A] ? 0x08 : 0x00;

		if (port_mode(PORT_A) == MODE_OUTPUT)
		{
			data |= m_obf[PORT_A] ? 0x80 : 0x00;
			mask |= 0x30;
		}
		else
		{
			data |= m_ibf[PORT_A] ? 0x20 : 0x00;
			mask |= 0xc0;
		}
		break;

	case MODE_2:
		b_mask = 0x07;
		data |= m_intr[PORT_A] ? 0x08 : 0x00;
		data |= m_ibf[PORT_A] ? 0x20 : 0x00;
		data |= m_obf[PORT_A] ? 0x80 : 0x00;
		break;
	}

	// PC lower
	switch (group_mode(GROUP_B))
	{
	case MODE_0:
		if (port_c_lower_mode() == MODE_OUTPUT)
		{
			mask |= b_mask;
		}
		else
		{
			// TTL inputs float high
			data |= b_mask;
		}
		break;

	case MODE_1:
		data |= m_intr[PORT_B] ? 0x01 : 0x00;

		if (port_mode(PORT_B) == MODE_OUTPUT)
		{
			data |= m_obf[PORT_B] ? 0x02 : 0x00;
		}
		else
		{
			data |= m_ibf[PORT_B] ? 0x02 : 0x00;
		}
	}

	data |= m_output[PORT_C] & mask;

	m_out_pc_cb((offs_t)0, data);
}

コード例 #4

ファイル: i8255.cpp プロジェクト: crazii/mameui

uint8_t i8255_device::read_pc()
{
	uint8_t data = 0;
	uint8_t mask = 0;
	uint8_t b_mask = 0x0f;

	// PC upper
	switch (group_mode(GROUP_A))
	{
	case MODE_0:
		if (port_c_upper_mode() == MODE_OUTPUT)
		{
			// read data from output latch
			data |= m_output[PORT_C] & 0xf0;
		}
		else
		{
			// read data from port
			mask |= 0xf0;
		}
		break;

	case MODE_1:
		data |= m_intr[PORT_A] ? 0x08 : 0x00;

		if (port_mode(PORT_A) == MODE_OUTPUT)
		{
			data |= m_obf[PORT_A] ? 0x80 : 0x00;
			data |= m_inte[PORT_A] ? 0x40 : 0x00;
			mask |= 0x30;
		}
		else
		{
			data |= m_ibf[PORT_A] ? 0x20 : 0x00;
			data |= m_inte[PORT_A] ? 0x10 : 0x00;
			mask |= 0xc0;
		}
		break;

	case MODE_2:
		b_mask = 0x07;
		data |= m_intr[PORT_A] ? 0x08 : 0x00;
		data |= m_inte2 ? 0x10 : 0x00;
		data |= m_ibf[PORT_A] ? 0x20 : 0x00;
		data |= m_inte1 ? 0x40 : 0x00;
		data |= m_obf[PORT_A] ? 0x80 : 0x00;
		break;
	}

	// PC lower
	switch (group_mode(GROUP_B))
	{
	case MODE_0:
		if (port_c_lower_mode() == MODE_OUTPUT)
		{
			// read data from output latch
			data |= m_output[PORT_C] & b_mask;
		}
		else
		{
			// read data from port
			mask |= b_mask;
		}
		break;

	case MODE_1:
		data |= m_inte[PORT_B] ? 0x04 : 0x00;
		data |= m_intr[PORT_B] ? 0x01 : 0x00;

		if (port_mode(PORT_B) == MODE_OUTPUT)
		{
			data |= m_obf[PORT_B] ? 0x02 : 0x00;
		}
		else
		{
			data |= m_ibf[PORT_B] ? 0x02 : 0x00;
		}
	}

	if (mask)
	{
		// read data from port
		data |= m_in_pc_cb(0) & mask;
	}

	return data;
}

コード例 #5

ファイル: i8255a.c プロジェクト: Paulodx/sdl-mame-wii

static UINT8 read_pc(i8255a_t *i8255a)
{
	UINT8 data = 0;
	UINT8 mask = 0;

	/* PC upper */
	switch (group_mode(i8255a, GROUP_A))
	{
	case MODE_0:
		if (port_c_upper_mode(i8255a) == MODE_OUTPUT)
		{
			/* read data from output latch */
			data |= i8255a->output[PORT_C] & 0xf0;
		}
		else
		{
			/* read data from port */
			mask |= 0xf0;
		}
		break;

	case MODE_1:
		data |= i8255a->intr[PORT_A] ? 0x08 : 0x00;

		if (port_mode(i8255a, PORT_A) == MODE_OUTPUT)
		{
			data |= i8255a->obf[PORT_A] ? 0x80 : 0x00;
			data |= i8255a->inte[PORT_A] ? 0x40 : 0x00;
			mask |= 0x30;
		}
		else
		{
			data |= i8255a->ibf[PORT_A] ? 0x20 : 0x00;
			data |= i8255a->inte[PORT_A] ? 0x10 : 0x00;
			mask |= 0xc0;
		}
		break;

	case MODE_2:
		data |= i8255a->intr[PORT_A] ? 0x08 : 0x00;
		data |= i8255a->inte2 ? 0x10 : 0x00;
		data |= i8255a->ibf[PORT_A] ? 0x20 : 0x00;
		data |= i8255a->inte1 ? 0x40 : 0x00;
		data |= i8255a->obf[PORT_A] ? 0x80 : 0x00;
		break;
	}

	/* PC lower */
	switch (group_mode(i8255a, GROUP_B))
	{
	case MODE_0:
		if (port_c_lower_mode(i8255a) == MODE_OUTPUT)
		{
			/* read data from output latch */
			data |= i8255a->output[PORT_C] & 0x0f;
		}
		else
		{
			/* read data from port */
			mask |= 0x0f;
		}
		break;

	case MODE_1:
		data |= i8255a->inte[PORT_B] ? 0x04 : 0x00;
		data |= i8255a->intr[PORT_B] ? 0x01 : 0x00;

		if (port_mode(i8255a, PORT_B) == MODE_OUTPUT)
		{
			data |= i8255a->obf[PORT_B] ? 0x02 : 0x00;
		}
		else
		{
			data |= i8255a->ibf[PORT_B] ? 0x02 : 0x00;
		}
	}

	if (mask)
	{
		/* read data from port */
		data |= devcb_call_read8(&i8255a->in_port_func[PORT_C], 0) & mask;
	}

	return data;
}

コード例 #6

ファイル: i8255a.c プロジェクト: Paulodx/sdl-mame-wii

static void output_pc(i8255a_t *i8255a)
{
	UINT8 data = 0;
	UINT8 mask = 0;

	/* PC upper */
	switch (group_mode(i8255a, GROUP_A))
	{
	case MODE_0:
		if (port_c_upper_mode(i8255a) == MODE_OUTPUT)
		{
			mask |= 0xf0;
		}
		break;

	case MODE_1:
		data |= i8255a->intr[PORT_A] ? 0x08 : 0x00;

		if (port_mode(i8255a, PORT_A) == MODE_OUTPUT)
		{
			data |= i8255a->obf[PORT_A] ? 0x80 : 0x00;
			mask |= 0x30;
		}
		else
		{
			data |= i8255a->ibf[PORT_A] ? 0x20 : 0x00;
			mask |= 0xc0;
		}
		break;

	case MODE_2:
		data |= i8255a->intr[PORT_A] ? 0x08 : 0x00;
		data |= i8255a->ibf[PORT_A] ? 0x20 : 0x00;
		data |= i8255a->obf[PORT_A] ? 0x80 : 0x00;
		break;
	}

	/* PC lower */
	switch (group_mode(i8255a, GROUP_B))
	{
	case MODE_0:
		if (port_c_lower_mode(i8255a) == MODE_OUTPUT)
		{
			mask |= 0x0f;
		}
		break;

	case MODE_1:
		data |= i8255a->intr[PORT_B] ? 0x01 : 0x00;

		if (port_mode(i8255a, PORT_B) == MODE_OUTPUT)
		{
			data |= i8255a->obf[PORT_B] ? 0x02 : 0x00;
		}
		else
		{
			data |= i8255a->ibf[PORT_B] ? 0x02 : 0x00;
		}
	}

	data |= i8255a->output[PORT_C] & mask;

	devcb_call_write8(&i8255a->out_port_func[PORT_C], 0, data);
}