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// license:BSD-3-Clause
// copyright-holders:68bit
#include "emu.h"
#include "swtpc8212.h"
swtpc8212_terminal_device::swtpc8212_terminal_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, SERIAL_TERMINAL_SWTPC8212, tag, owner, clock)
, device_rs232_port_interface(mconfig, *this)
, m_swtpc8212(*this, "swtpc8212")
, m_flow_control(*this, "FLOW_CONTROL")
{
}
void swtpc8212_terminal_device::device_add_mconfig(machine_config &config)
{
SWTPC8212(config, m_swtpc8212, 0);
m_swtpc8212->rs232_conn_txd_handler().set(FUNC(swtpc8212_terminal_device::output_rxd));
m_swtpc8212->rs232_conn_rts_handler().set(FUNC(swtpc8212_terminal_device::route_term_rts));
m_swtpc8212->rs232_conn_dtr_handler().set(FUNC(swtpc8212_terminal_device::route_term_dtr));
}
INPUT_PORTS_START(swtpc8212_terminal)
PORT_START("FLOW_CONTROL")
PORT_CONFNAME(0x1, 1, "Flow control") PORT_CHANGED_MEMBER(DEVICE_SELF, FUNC(swtpc8212_terminal_device::flow_control), 0)
PORT_CONFSETTING(0x00, "None")
PORT_CONFSETTING(0x01, "Terminal DTR to remote CTS")
INPUT_PORTS_END
ioport_constructor swtpc8212_terminal_device::device_input_ports() const
{
return INPUT_PORTS_NAME(swtpc8212_terminal);
}
void swtpc8212_terminal_device::input_txd(int state)
{
m_swtpc8212->rs232_conn_rxd_w(state);
}
void swtpc8212_terminal_device::route_term_rts(int state)
{
// Loop the terminal RTS output to the terminal CTS input.
m_swtpc8212->rs232_conn_cts_w(state);
}
// This terminal uses DTR for hardware flow control.
void swtpc8212_terminal_device::route_term_dtr(int state)
{
if (m_flow_control->read())
{
// Connect the terminal DTR output to CTS at the other end.
output_cts(state);
}
// Cache the state, in case the ioport setting changes.
m_dtr = state;
}
INPUT_CHANGED_MEMBER(swtpc8212_terminal_device::flow_control)
{
if (newval)
output_cts(m_dtr);
else
output_cts(0);
}
void swtpc8212_terminal_device::device_start()
{
save_item(NAME(m_dtr));
}
void swtpc8212_terminal_device::device_reset()
{
// To the terminal
m_swtpc8212->rs232_conn_cts_w(0);
// To the computer
output_rxd(1);
output_dcd(0);
output_dsr(0);
if (!m_flow_control->read())
output_cts(0);
}
DEFINE_DEVICE_TYPE(SERIAL_TERMINAL_SWTPC8212, swtpc8212_terminal_device, "swtpc8212_terminal", "SWTPC8212 Terminal")
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