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wy100: Customize loopback device to remove need for hack

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AJR 2024-01-10 16:13:42 -05:00
parent fc6b4e3ec8
commit efe2d7299b
1 changed files with 40 additions and 2 deletions
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42
src/mame/wyse/wy100.cpp
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@ -63,6 +63,8 @@ private:
void io_map(address_map &map);
void bank_map(address_map &map);
static void printer_devices(device_slot_interface &slot);
required_device<mcs48_cpu_device> m_maincpu;
required_device<address_map_bank_device> m_rambank;
required_device_array<i8276_device, 2> m_crtc;
@ -199,6 +201,42 @@ static INPUT_PORTS_START(wy100)
INPUT_PORTS_END
class wy100_loopback_device : public device_t, public device_rs232_port_interface
{
public:
wy100_loopback_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
virtual void device_start() override;
virtual void input_txd(int state) override;
};
DEFINE_DEVICE_TYPE_PRIVATE(WY100_LOOPBACK, device_rs232_port_interface, wy100_loopback_device, "wy100_loopback", "WY-100 Printer Loopback (3 to 20)")
wy100_loopback_device::wy100_loopback_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, WY100_LOOPBACK, tag, owner, clock)
, device_rs232_port_interface(mconfig, *this)
{
}
void wy100_loopback_device::device_start()
{
}
void wy100_loopback_device::input_txd(int state)
{
output_dsr(state);
}
void wy100_state::printer_devices(device_slot_interface &slot)
{
default_rs232_devices(slot);
slot.option_replace("loopback", WY100_LOOPBACK);
slot.option_remove("dec_loopback");
}
void wy100_state::wy100(machine_config &config)
{
I8039(config, m_maincpu, 10.1376_MHz_XTAL); // INS8039N-11
@ -250,8 +288,8 @@ void wy100_state::wy100(machine_config &config)
m_modem->cts_handler().set(m_pci, FUNC(scn2651_device::cts_w));
m_modem->rxd_handler().set(m_pci, FUNC(scn2651_device::rxd_w));
RS232_PORT(config, m_printer, default_rs232_devices, "loopback");
m_printer->rxd_handler().set(m_pci, FUNC(scn2651_device::dsr_w)); // actually pin 20 (DTR), but diagnostic self-test requires it to be looped back from pin 3 (TXD)
RS232_PORT(config, m_printer, wy100_state::printer_devices, "loopback");
m_printer->dsr_handler().set(m_pci, FUNC(scn2651_device::dsr_w)); // actually pin 20 (DTR)
}