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(nw) jade : added z80sio

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This commit is contained in:
Robbbert 2017-09-16 03:12:47 +10:00
parent ee7472ae05
commit 64bab1ae6e
1 changed files with 30 additions and 40 deletions
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70
src/mame/drivers/jade.cpp
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@ -15,73 +15,56 @@
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/i8251.h"
#include "machine/terminal.h"
#include "machine/z80sio.h"
#include "machine/clock.h"
#include "bus/rs232/rs232.h"
#define TERMINAL_TAG "terminal"
class jade_state : public driver_device
{
public:
jade_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_terminal(*this, TERMINAL_TAG),
m_uart(*this, "uart")
{
}
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_sio(*this, "sio")
{ }
DECLARE_WRITE_LINE_MEMBER(clock_tick);
void kbd_put(u8 data);
DECLARE_READ8_MEMBER(keyin_r);
DECLARE_READ8_MEMBER(status_r);
private:
uint8_t m_term_data;
virtual void machine_reset() override;
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
required_device<i8251_device> m_uart;
required_device<z80sio_device> m_sio;
};
static ADDRESS_MAP_START(jade_mem, AS_PROGRAM, 8, jade_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x07ff) AM_ROM AM_REGION("roms", 0)
AM_RANGE(0xe000, 0xffff) AM_RAM
AM_RANGE(0x0800, 0xffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(jade_io, AS_IO, 8, jade_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
//AM_RANGE(0x30, 0x30) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
//AM_RANGE(0x32, 0x32) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
AM_RANGE(0x30, 0x30) AM_READ(keyin_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
AM_RANGE(0x32, 0x32) AM_READ(status_r)
AM_RANGE(0x28, 0x28) // writes 45, 0D at start
AM_RANGE(0x30, 0x33) AM_DEVREADWRITE("sio", z80sio_device, cd_ba_r, cd_ba_w)
AM_RANGE(0x43, 0x43) AM_READNOP // writes 01, 80 then continually reads
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( jade )
INPUT_PORTS_END
READ8_MEMBER( jade_state::keyin_r )
// source of baud frequency is unknown, so we invent a clock
WRITE_LINE_MEMBER( jade_state::clock_tick )
{
uint8_t ret = m_term_data;
m_term_data = 0;
return (ret) ? ret : 0x13;
}
READ8_MEMBER( jade_state::status_r )
{
return (m_term_data) ? 5 : 4;
}
void jade_state::kbd_put(u8 data)
{
m_term_data = data;
m_sio->txca_w(state);
m_sio->rxca_w(state);
}
void jade_state::machine_reset()
{
m_term_data = 0;
}
static MACHINE_CONFIG_START( jade )
@ -90,12 +73,19 @@ static MACHINE_CONFIG_START( jade )
MCFG_CPU_PROGRAM_MAP(jade_mem)
MCFG_CPU_IO_MAP(jade_io)
/* video hardware */
MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)
MCFG_GENERIC_TERMINAL_KEYBOARD_CB(PUT(jade_state, kbd_put))
MCFG_DEVICE_ADD("siot_clock", CLOCK, 153600)
MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(jade_state, clock_tick))
/* Devices */
MCFG_DEVICE_ADD("uart", I8251, 0)
MCFG_Z80SIO_ADD("sio", XTAL_4MHz, 0, 0, 0, 0)
//MCFG_Z80SIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) // interrupts not programmed by default
MCFG_Z80SIO_OUT_TXDA_CB(DEVWRITELINE("rs232", rs232_port_device, write_txd))
MCFG_Z80SIO_OUT_DTRA_CB(DEVWRITELINE("rs232", rs232_port_device, write_dtr))
MCFG_Z80SIO_OUT_RTSA_CB(DEVWRITELINE("rs232", rs232_port_device, write_rts))
MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "terminal")
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sio", z80sio_device, rxa_w))
MCFG_RS232_CTS_HANDLER(DEVWRITELINE("sio", z80sio_device, ctsa_w))
MACHINE_CONFIG_END
/* ROM definition */
@ -107,4 +97,4 @@ ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 19??, jade, 0, 0, jade, jade, jade_state, 0, "Jade", "JGZ80", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )
COMP( 1983, jade, 0, 0, jade, jade, jade_state, 0, "Jade", "JGZ80", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )