diff options
Diffstat (limited to 'src/mame/drivers/jade.c')
-rw-r--r-- | src/mame/drivers/jade.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/mame/drivers/jade.c b/src/mame/drivers/jade.c new file mode 100644 index 00000000000..1f554d92ad1 --- /dev/null +++ b/src/mame/drivers/jade.c @@ -0,0 +1,111 @@ +// license:BSD-3-Clause +// copyright-holders:Robbbert +/*************************************************************************** + + Jade JGZ80 Single board computer on a S100 card. + + 2013-09-12 Skeleton driver. + + No info found as yet. + + It takes about 8 seconds to start up. + Type HE to get a list of commands. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "machine/i8251.h" +#include "machine/terminal.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") + { + } + + DECLARE_WRITE8_MEMBER(kbd_put); + DECLARE_READ8_MEMBER(keyin_r); + DECLARE_READ8_MEMBER(status_r); + DECLARE_READ8_MEMBER(data_r); +private: + UINT8 m_term_data; + virtual void machine_reset(); + required_device<cpu_device> m_maincpu; + required_device<generic_terminal_device> m_terminal; + required_device<i8251_device> m_uart; +}; + + +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 +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) +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( jade ) +INPUT_PORTS_END + +READ8_MEMBER( jade_state::keyin_r ) +{ + UINT8 ret = m_term_data; + m_term_data = 0; + return (ret) ? ret : 0x13; +} + +READ8_MEMBER( jade_state::status_r ) +{ + return (m_term_data) ? 5 : 4; +} + +WRITE8_MEMBER( jade_state::kbd_put ) +{ + m_term_data = data; +} + +void jade_state::machine_reset() +{ + m_term_data = 0; +} + +static MACHINE_CONFIG_START( jade, jade_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz) + 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(WRITE8(jade_state, kbd_put)) + + /* Devices */ + MCFG_DEVICE_ADD("uart", I8251, 0) +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( jade ) + ROM_REGION( 0x800, "roms", 0 ) + ROM_LOAD( "jgz80.rom", 0x0000, 0x0800, CRC(90c4a1ef) SHA1(8a93a11051cc27f3edca24f0f4297ebe0099964e) ) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ +COMP( 19??, jade, 0, 0, jade, jade, driver_device, 0, "Jade", "JGZ80", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) |