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// license:BSD-3-Clause
// copyright-holders:Sven Schnelle
/***************************************************************************
HP98644 Asynchronous serial interface
***************************************************************************/
#include "emu.h"
#include "hp98644.h"
#include "bus/rs232/rs232.h"
#include "machine/ins8250.h"
namespace {
class dio16_98644_device :
public device_t,
public bus::hp_dio::device_dio16_card_interface
{
public:
// construction/destruction
dio16_98644_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
dio16_98644_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual ioport_constructor device_input_ports() const override ATTR_COLD;
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
uint16_t io_r(offs_t offset);
void io_w(offs_t offset, uint16_t data);
required_device<ins8250_device> m_uart;
private:
required_ioport m_switches;
bool m_installed_io;
uint8_t m_control;
bool m_loopback;
uint8_t m_data;
};
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
#define RS232_TAG "rs232"
#define INS8250_TAG "ins8250"
void dio16_98644_device::device_add_mconfig(machine_config &config)
{
INS8250(config, m_uart, XTAL(2'457'600));
m_uart->out_tx_callback().set(RS232_TAG, FUNC(rs232_port_device::write_txd));
m_uart->out_dtr_callback().set(RS232_TAG, FUNC(rs232_port_device::write_dtr));
m_uart->out_rts_callback().set(RS232_TAG, FUNC(rs232_port_device::write_rts));
rs232_port_device &rs232(RS232_PORT(config, RS232_TAG, default_rs232_devices, nullptr));
rs232.rxd_handler().set(m_uart, FUNC(ins8250_uart_device::rx_w));
rs232.dcd_handler().set(m_uart, FUNC(ins8250_uart_device::dcd_w));
rs232.dsr_handler().set(m_uart, FUNC(ins8250_uart_device::dsr_w));
rs232.ri_handler().set(m_uart, FUNC(ins8250_uart_device::ri_w));
rs232.cts_handler().set(m_uart, FUNC(ins8250_uart_device::cts_w));
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// dio16_98644_device - constructor
//-------------------------------------------------
dio16_98644_device::dio16_98644_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
dio16_98644_device(mconfig, HPDIO_98644, tag, owner, clock)
{
}
dio16_98644_device::dio16_98644_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, type, tag, owner, clock),
device_dio16_card_interface(mconfig, *this),
m_uart{*this, INS8250_TAG},
m_switches{*this, "switches"},
m_installed_io{false},
m_control{0},
m_loopback{false},
m_data{0}
{
}
#define REG_SWITCHES_REMOTE 0x01
#define REG_SWITCHES_98626_EN 0x02
#define REG_SWITCHES_MODEM_EN 0x04
#define REG_SWITCHES_SELECT_CODE_MASK 31
#define REG_SWITCHES_SELECT_CODE_SHIFT 5
#define REG_SWITCHES_INT_LEVEL_MASK 3
#define REG_SWITCHES_INT_LEVEL_SHIFT 3
static INPUT_PORTS_START(hp98644_port)
PORT_START("switches")
PORT_DIPNAME(REG_SWITCHES_REMOTE, 0x00, "Remote")
PORT_DIPSETTING(0x00, DEF_STR(Off))
PORT_DIPSETTING(REG_SWITCHES_REMOTE, DEF_STR(On))
PORT_DIPNAME(REG_SWITCHES_98626_EN, 0x00, "98626 Emulation")
PORT_DIPSETTING(0x00, DEF_STR(Off))
PORT_DIPSETTING(REG_SWITCHES_98626_EN, DEF_STR(On))
PORT_DIPNAME(REG_SWITCHES_MODEM_EN, 0x00, "Modem line enable")
PORT_DIPSETTING(0x00, DEF_STR(Off))
PORT_DIPSETTING(REG_SWITCHES_MODEM_EN, DEF_STR(On))
PORT_DIPNAME(REG_SWITCHES_INT_LEVEL_MASK << REG_SWITCHES_INT_LEVEL_SHIFT, 0x02 << REG_SWITCHES_INT_LEVEL_SHIFT, "Interrupt level")
PORT_DIPSETTING(0 << REG_SWITCHES_INT_LEVEL_SHIFT, "3")
PORT_DIPSETTING(1 << REG_SWITCHES_INT_LEVEL_SHIFT, "4")
PORT_DIPSETTING(2 << REG_SWITCHES_INT_LEVEL_SHIFT, "5")
PORT_DIPSETTING(3 << REG_SWITCHES_INT_LEVEL_SHIFT, "6")
PORT_DIPNAME(REG_SWITCHES_SELECT_CODE_MASK << REG_SWITCHES_SELECT_CODE_SHIFT, 0x09 << REG_SWITCHES_SELECT_CODE_SHIFT, "Select code")
PORT_DIPSETTING(0 << REG_SWITCHES_SELECT_CODE_SHIFT, "0")
PORT_DIPSETTING(1 << REG_SWITCHES_SELECT_CODE_SHIFT, "1")
PORT_DIPSETTING(2 << REG_SWITCHES_SELECT_CODE_SHIFT, "2")
PORT_DIPSETTING(3 << REG_SWITCHES_SELECT_CODE_SHIFT, "3")
PORT_DIPSETTING(4 << REG_SWITCHES_SELECT_CODE_SHIFT, "4")
PORT_DIPSETTING(5 << REG_SWITCHES_SELECT_CODE_SHIFT, "5")
PORT_DIPSETTING(6 << REG_SWITCHES_SELECT_CODE_SHIFT, "6")
PORT_DIPSETTING(7 << REG_SWITCHES_SELECT_CODE_SHIFT, "7")
PORT_DIPSETTING(8 << REG_SWITCHES_SELECT_CODE_SHIFT, "8")
PORT_DIPSETTING(9 << REG_SWITCHES_SELECT_CODE_SHIFT, "9")
PORT_DIPSETTING(10 << REG_SWITCHES_SELECT_CODE_SHIFT, "10")
PORT_DIPSETTING(11 << REG_SWITCHES_SELECT_CODE_SHIFT, "11")
PORT_DIPSETTING(12 << REG_SWITCHES_SELECT_CODE_SHIFT, "12")
PORT_DIPSETTING(13 << REG_SWITCHES_SELECT_CODE_SHIFT, "13")
PORT_DIPSETTING(14 << REG_SWITCHES_SELECT_CODE_SHIFT, "14")
PORT_DIPSETTING(15 << REG_SWITCHES_SELECT_CODE_SHIFT, "15")
PORT_DIPSETTING(16 << REG_SWITCHES_SELECT_CODE_SHIFT, "16")
PORT_DIPSETTING(17 << REG_SWITCHES_SELECT_CODE_SHIFT, "17")
PORT_DIPSETTING(18 << REG_SWITCHES_SELECT_CODE_SHIFT, "18")
PORT_DIPSETTING(19 << REG_SWITCHES_SELECT_CODE_SHIFT, "19")
PORT_DIPSETTING(20 << REG_SWITCHES_SELECT_CODE_SHIFT, "20")
PORT_DIPSETTING(21 << REG_SWITCHES_SELECT_CODE_SHIFT, "21")
PORT_DIPSETTING(22 << REG_SWITCHES_SELECT_CODE_SHIFT, "22")
PORT_DIPSETTING(23 << REG_SWITCHES_SELECT_CODE_SHIFT, "23")
PORT_DIPSETTING(24 << REG_SWITCHES_SELECT_CODE_SHIFT, "24")
PORT_DIPSETTING(25 << REG_SWITCHES_SELECT_CODE_SHIFT, "25")
PORT_DIPSETTING(26 << REG_SWITCHES_SELECT_CODE_SHIFT, "26")
PORT_DIPSETTING(27 << REG_SWITCHES_SELECT_CODE_SHIFT, "27")
PORT_DIPSETTING(28 << REG_SWITCHES_SELECT_CODE_SHIFT, "28")
PORT_DIPSETTING(29 << REG_SWITCHES_SELECT_CODE_SHIFT, "29")
PORT_DIPSETTING(30 << REG_SWITCHES_SELECT_CODE_SHIFT, "30")
PORT_DIPSETTING(31 << REG_SWITCHES_SELECT_CODE_SHIFT, "31")
INPUT_PORTS_END
ioport_constructor dio16_98644_device::device_input_ports() const
{
return INPUT_PORTS_NAME(hp98644_port);
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void dio16_98644_device::device_start()
{
save_item(NAME(m_installed_io));
save_item(NAME(m_control));
save_item(NAME(m_loopback));
save_item(NAME(m_data));
m_installed_io = false;
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void dio16_98644_device::device_reset()
{
uint8_t code = m_switches->read() >> REG_SWITCHES_SELECT_CODE_SHIFT;
code &= REG_SWITCHES_SELECT_CODE_MASK;
if (!m_installed_io)
{
dio().install_memory(
0x600000 + (code * 0x10000),
0x6007ff + (code * 0x10000),
read16sm_delegate(*this, FUNC(dio16_98644_device::io_r)),
write16sm_delegate(*this, FUNC(dio16_98644_device::io_w)));
m_installed_io = true;
}
m_data = 0;
m_control = 0;
}
uint16_t dio16_98644_device::io_r(offs_t offset)
{
uint16_t ret = 0xffff;
switch(offset) {
case 0: /* ID */
ret = 0x02;
if (m_switches->read() & REG_SWITCHES_REMOTE)
ret |= 0x80;
if (m_switches->read() & REG_SWITCHES_98626_EN)
ret |= 0x40;
break;
case 1:
ret = m_control | m_control << 8 |
(((m_switches->read() >> REG_SWITCHES_INT_LEVEL_SHIFT) & REG_SWITCHES_INT_LEVEL_MASK) << 4);
break;
case 0x08:
case 0x09:
case 0x0a:
case 0x0b:
case 0x0c:
case 0x0d:
case 0x0e:
case 0x0f:
ret = m_uart->ins8250_r(offset & 0x07);
break;
}
if (m_loopback && offset == 8) {
ret = m_data;
}
return ret;
}
void dio16_98644_device::io_w(offs_t offset, uint16_t data)
{
if (offset == 0x0c)
m_loopback = (data & 0x10) ? true : false;
if (m_loopback && offset == 8) {
m_data = data;
return;
}
switch(offset) {
case 0:
device_reset();
break;
case 1:
m_control = data & 0x80;
break;
case 0x08:
case 0x09:
case 0x0a:
case 0x0b:
case 0x0c:
case 0x0d:
case 0x0e:
case 0x0f:
m_uart->ins8250_w(offset & 0x07, data);
break;
}
}
} // anonymous namespace
DEFINE_DEVICE_TYPE_PRIVATE(HPDIO_98644, bus::hp_dio::device_dio16_card_interface, dio16_98644_device, "dio98644", "HP98644A Asynchronous Serial Interface")
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