// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** QT Computer Systems SBC +2/4 11/12/2009 Skeleton driver. It expects a rom or similar at E377-up, so currently it crashes. ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/terminal.h" #define TERMINAL_TAG "terminal" class qtsbc_state : public driver_device { public: qtsbc_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_p_ram(*this, "p_ram") { } required_device m_maincpu; required_device m_terminal; DECLARE_READ8_MEMBER( qtsbc_06_r ); DECLARE_READ8_MEMBER( qtsbc_43_r ); DECLARE_WRITE8_MEMBER( kbd_put ); required_shared_ptr m_p_ram; UINT8 m_term_data; virtual void machine_reset() override; }; READ8_MEMBER( qtsbc_state::qtsbc_06_r ) { UINT8 ret = m_term_data; m_term_data = 0; return ret; } READ8_MEMBER( qtsbc_state::qtsbc_43_r ) { return 0; } static ADDRESS_MAP_START(qtsbc_mem, AS_PROGRAM, 8, qtsbc_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE( 0x0000, 0xffff ) AM_RAM AM_SHARE("p_ram") AM_REGION("maincpu", 0) ADDRESS_MAP_END static ADDRESS_MAP_START( qtsbc_io, AS_IO, 8, qtsbc_state) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x06, 0x06) AM_READ(qtsbc_06_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write) AM_RANGE(0x43, 0x43) AM_READ(qtsbc_43_r) ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( qtsbc ) INPUT_PORTS_END void qtsbc_state::machine_reset() { UINT8* bios = memregion("maincpu")->base()+0x10000; memcpy(m_p_ram, bios, 0x800); } WRITE8_MEMBER( qtsbc_state::kbd_put ) { m_term_data = data; } static MACHINE_CONFIG_START( qtsbc, qtsbc_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz) // Mostek MK3880 MCFG_CPU_PROGRAM_MAP(qtsbc_mem) MCFG_CPU_IO_MAP(qtsbc_io) /* video hardware */ MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0) MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(qtsbc_state, kbd_put)) MACHINE_CONFIG_END /* ROM definition */ ROM_START( qtsbc ) ROM_REGION( 0x10800, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "qtsbc.bin", 0x10000, 0x0800, CRC(823fd942) SHA1(64c4f74dd069ae4d43d301f5e279185f32a1efa0)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 19??, qtsbc, 0, 0, qtsbc, qtsbc, driver_device, 0, "Computer Systems Inc.", "QT SBC +2/4", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)