diff options
Diffstat (limited to 'src/devices/bus/rs232/terminal.c')
-rw-r--r-- | src/devices/bus/rs232/terminal.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/devices/bus/rs232/terminal.c b/src/devices/bus/rs232/terminal.c new file mode 100644 index 00000000000..a8b8db63e36 --- /dev/null +++ b/src/devices/bus/rs232/terminal.c @@ -0,0 +1,106 @@ +// license:BSD-3-Clause +// copyright-holders:smf +#include "terminal.h" + +serial_terminal_device::serial_terminal_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : generic_terminal_device(mconfig, SERIAL_TERMINAL, "Serial Terminal", tag, owner, clock, "serial_terminal", __FILE__), + device_serial_interface(mconfig, *this), + device_rs232_port_interface(mconfig, *this), + m_rs232_txbaud(*this, "RS232_TXBAUD"), + m_rs232_rxbaud(*this, "RS232_RXBAUD"), + m_rs232_startbits(*this, "RS232_STARTBITS"), + m_rs232_databits(*this, "RS232_DATABITS"), + m_rs232_parity(*this, "RS232_PARITY"), + m_rs232_stopbits(*this, "RS232_STOPBITS") +{ +} + +static INPUT_PORTS_START(serial_terminal) + PORT_INCLUDE(generic_terminal) + + MCFG_RS232_BAUD("RS232_TXBAUD", RS232_BAUD_9600, "TX Baud", serial_terminal_device, update_serial) + MCFG_RS232_BAUD("RS232_RXBAUD", RS232_BAUD_9600, "RX Baud", serial_terminal_device, update_serial) + MCFG_RS232_STARTBITS("RS232_STARTBITS", RS232_STARTBITS_1, "Start Bits", serial_terminal_device, update_serial) + MCFG_RS232_DATABITS("RS232_DATABITS", RS232_DATABITS_8, "Data Bits", serial_terminal_device, update_serial) + MCFG_RS232_PARITY("RS232_PARITY", RS232_PARITY_NONE, "Parity", serial_terminal_device, update_serial) + MCFG_RS232_STOPBITS("RS232_STOPBITS", RS232_STOPBITS_1, "Stop Bits", serial_terminal_device, update_serial) +INPUT_PORTS_END + +ioport_constructor serial_terminal_device::device_input_ports() const +{ + return INPUT_PORTS_NAME(serial_terminal); +} + +void serial_terminal_device::device_start() +{ + generic_terminal_device::device_start(); +} + +WRITE_LINE_MEMBER(serial_terminal_device::update_serial) +{ + int startbits = convert_startbits(m_rs232_startbits->read()); + int databits = convert_databits(m_rs232_databits->read()); + parity_t parity = convert_parity(m_rs232_parity->read()); + stop_bits_t stopbits = convert_stopbits(m_rs232_stopbits->read()); + + set_data_frame(startbits, databits, parity, stopbits); + + int txbaud = convert_baud(m_rs232_txbaud->read()); + set_tra_rate(txbaud); + + int rxbaud = convert_baud(m_rs232_rxbaud->read()); + set_rcv_rate(rxbaud); + + output_rxd(1); + + // TODO: make this configurable + output_dcd(0); + output_dsr(0); + output_cts(0); +} + +void serial_terminal_device::device_reset() +{ + generic_terminal_device::device_reset(); + + update_serial(0); +} + +void serial_terminal_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) +{ + device_serial_interface::device_timer(timer, id, param, ptr); +} + +void serial_terminal_device::send_key(UINT8 code) +{ + if (is_transmit_register_empty()) + { + transmit_register_setup(code); + return; + } + + m_key_valid = true; + m_curr_key = code; +} + +void serial_terminal_device::tra_callback() +{ + output_rxd(transmit_register_get_data_bit()); +} + +void serial_terminal_device::tra_complete() +{ + if (m_key_valid) + { + transmit_register_setup(m_curr_key); + m_key_valid = false; + } +} + +void serial_terminal_device::rcv_complete() +{ + receive_register_extract(); + term_write(get_received_char()); +} + +const device_type SERIAL_TERMINAL = &device_creator<serial_terminal_device>; |