C++ (Cpp) m_txrdy_handler示例

示例#1

文件： i8251.c 项目： jiangzhonghui/mame

void i8251_device::update_tx_ready()
{
	/* clear tx ready state */
	int tx_ready;

	/* tx ready output is set if:
	    DB Buffer Empty &
	    CTS is set &
	    Transmit enable is 1
	*/

	tx_ready = 0;

	/* transmit enable? */
	if ((m_command & (1<<0))!=0)
	{
		/* other side has rts set (comes in as CTS at this side) */
		if (!m_cts)
		{
			if (m_status & I8251_STATUS_TX_EMPTY)
			{
				/* enable transfer */
				tx_ready = 1;
			}
		}
	}

	m_txrdy_handler(tx_ready);
}

示例#2

文件： i8251.cpp 项目： Robbbert/store1

void i8251_device::update_tx_ready()
{
	/* clear tx ready state */
	int tx_ready;

	/* tx ready output is set if:
	    DB Buffer Empty &
	    CTS is set &
	    Transmit enable is 1
	*/

	tx_ready = is_tx_enabled() && (m_status & I8251_STATUS_TX_READY) != 0;

	m_txrdy_handler(tx_ready);
}