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qx10kbd: add keyboard rom and emulate it [Carl, Frank Hughes]

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This commit is contained in:
cracyc 2018-09-29 22:23:02 -05:00
parent 51f02ffaf2
commit a7ac2f0dae
2 changed files with 52 additions and 53 deletions
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87
src/mame/machine/qx10kbd.cpp
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@ -1,73 +1,62 @@
// license:BSD-3-Clause
// copyright-holders:Carl
// TODO: dump 8049 mcu; key repeat; LEDs
// TODO: LEDs
#include "emu.h"
#include "machine/qx10kbd.h"
#include "machine/keyboard.ipp"
#include "cpu/mcs48/mcs48.h"
qx10_keyboard_device::qx10_keyboard_device(const machine_config& mconfig, const char* tag, device_t* owner, uint32_t clock)
: buffered_rs232_device(mconfig, QX10_KEYBOARD, tag, owner, 0)
, device_matrix_keyboard_interface(mconfig, *this, "LINE0", "LINE1", "LINE2", "LINE3", "LINE4", "LINE5", "LINE6", "LINE7", "LINE8", "LINE9", "LINEA", "LINEB", "LINEC", "LINED", "LINEE", "LINEF")
: device_t(mconfig, QX10_KEYBOARD, tag, owner, clock)
, device_rs232_port_interface(mconfig, *this)
, m_rows(*this, "LINE%X", 0U)
, m_mcu(*this, "mcu")
{
}
ROM_START(qx10kbd)
ROM_REGION(0x0800, "mcu", 0)
ROM_LOAD("mbl8049h.5a", 0x0000, 0x0800, CRC(8615e159) SHA1(26b7f447acfe2c605dbe0fc98e6c777f0fa8a94d))
ROM_END
void qx10_keyboard_device::device_reset()
tiny_rom_entry const *qx10_keyboard_device::device_rom_region() const
{
buffered_rs232_device::device_reset();
reset_key_state();
clear_fifo();
set_data_frame(1, 8, PARITY_EVEN, STOP_BITS_1);
set_rate(1'200);
receive_register_reset();
transmit_register_reset();
output_dcd(0);
output_dsr(0);
output_cts(0);
output_rxd(1);
start_processing(attotime::from_hz(2'400));
return ROM_NAME(qx10kbd);
}
void qx10_keyboard_device::key_make(uint8_t row, uint8_t column)
void qx10_keyboard_device::device_start()
{
transmit_byte((column << 4) | row);
m_bit_timer = timer_alloc();
m_bit_timer->adjust(attotime::from_hz(2400), 0, attotime::from_hz(2400));
m_clk_state = 0;
}
void qx10_keyboard_device::received_byte(uint8_t data)
WRITE_LINE_MEMBER(qx10_keyboard_device::input_txd)
{
switch (data & 0xe0)
{
case 0x00: // set repeat start
break;
case 0x20: // set repeat interval
break;
case 0x40: // set LED
break;
case 0x60: // get LED
transmit_byte(0);
break;
case 0x80: // get SW
break;
case 0xa0: // set repeat
break;
case 0xc0: // enable keyboard
break;
case 0xe0:
if (!(data & 1))
transmit_byte(0);
break;
}
m_rxd = state;
}
void qx10_keyboard_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
m_clk_state = !m_clk_state;
}
WRITE8_MEMBER(qx10_keyboard_device::mcu_p1_w)
{
m_row = data & 0xf;
output_rxd(BIT(data, 7));
}
void qx10_keyboard_device::device_add_mconfig(machine_config &config)
{
auto &mcu(I8049(config, "mcu", 11_MHz_XTAL));
mcu.p1_out_cb().set(FUNC(qx10_keyboard_device::mcu_p1_w));
mcu.p2_out_cb().set([this](u8 data) { /* leds */ });
mcu.bus_in_cb().set([this]() { return m_rows[m_row]->read(); });
mcu.t1_in_cb().set([this]() { return m_rxd; });
mcu.t0_in_cb().set([this]() { return m_clk_state; });
}
static INPUT_PORTS_START( qx10_keyboard )
PORT_START("LINE0")

18
src/mame/machine/qx10kbd.h
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@ -9,18 +9,28 @@
#include "machine/keyboard.h"
class qx10_keyboard_device : public buffered_rs232_device<16U>, protected device_matrix_keyboard_interface<16U>
class qx10_keyboard_device
: public device_t
, public device_rs232_port_interface
{
public:
qx10_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual ioport_constructor device_input_ports() const override;
virtual DECLARE_WRITE_LINE_MEMBER(input_txd) override;
DECLARE_WRITE8_MEMBER(mcu_p1_w);
protected:
virtual void device_reset() override;
virtual void key_make(uint8_t row, uint8_t column) override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
virtual void device_start() override;
private:
virtual void received_byte(uint8_t data) override;
required_ioport_array<16> m_rows;
required_device<cpu_device> m_mcu;
emu_timer *m_bit_timer;
u8 m_line, m_rxd, m_clk;
int m_row, m_clk_state;
};
DECLARE_DEVICE_TYPE(QX10_KEYBOARD, qx10_keyboard_device)