void i8251_device::receive_clock()
{
/* receive enable? */
if (BIT(m_command, 2))
{
const bool sync = is_receive_register_synchronized();
if (sync)
{
--m_rxc_count;
if (m_rxc_count)
return;
}
//logerror("I8251\n");
/* get bit received from other side and update receive register */
receive_register_update_bit(m_rxd);
if (is_receive_register_synchronized())
m_rxc_count = sync ? m_br_factor : (3 * m_br_factor / 2);
if (is_receive_register_full())
{
receive_register_extract();
receive_character(get_received_char());
}
}
}
void wangpc_keyboard_device::input_callback(UINT8 state)
{
int bit = (state & RX) ? 1 : 0;
receive_register_update_bit(bit);
if (is_receive_register_full())
{
m_maincpu->set_input_line(MCS51_RX_LINE, ASSERT_LINE);
receive_register_extract();
if (LOG) logerror("Wang PC keyboard receive data %02x\n", get_received_char());
}
}
void i8251_device::receive_clock()
{
/* receive enable? */
if (m_command & (1<<2))
{
//logerror("I8251\n");
/* get bit received from other side and update receive register */
if(m_in_rxd_func.isnull())
receive_register_update_bit(get_in_data_bit());
else
receive_register_update_bit(m_in_rxd_func());
if (is_receive_register_full())
{
receive_register_extract();
receive_character(get_received_char());
}
}
}
inline void im6402_device::receive_bit(int state)
{
if (LOG) logerror("IM6402 '%s' Receive Bit %u\n", tag(), state);
receive_register_update_bit(state);
if (is_receive_register_full())
{
receive_register_extract();
m_rbr = get_received_char();
if (LOG) logerror("IM6402 '%s' Receive Data %02x\n", tag(), m_rbr);
if (m_dr)
{
m_oe = 1;
}
set_dr(ASSERT_LINE);
}
}
void i8251_device::receive_clock()
{
m_rxc_count++;
if (m_rxc_count == m_br_factor)
m_rxc_count = 0;
else
return;
/* receive enable? */
if (m_command & (1<<2))
{
//logerror("I8251\n");
/* get bit received from other side and update receive register */
receive_register_update_bit(m_rxd);
if (is_receive_register_full())
{
receive_register_extract();
receive_character(get_received_char());
}
}
}
inline void im6402_device::receive()
{
if (m_in_rri_func.isnull())
{
receive_register_update_bit(get_in_data_bit());
}
else
{
receive_register_update_bit(m_in_rri_func());
}
if (is_receive_register_full())
{
receive_register_extract();
m_rbr = get_received_char();
if (m_dr)
{
m_oe = 1;
}
set_dr(ASSERT_LINE);
}
}
