diff options
Diffstat (limited to 'src/mame/drivers/lft.c')
-rw-r--r-- | src/mame/drivers/lft.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/mame/drivers/lft.c b/src/mame/drivers/lft.c new file mode 100644 index 00000000000..2034ec9219d --- /dev/null +++ b/src/mame/drivers/lft.c @@ -0,0 +1,117 @@ +// license:BSD-3-Clause +// copyright-holders:Robbbert +/*************************************************************************** + +2013-09-09 Skeleton of LFT computer system. A search on the net produces + no finds. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/i86/i186.h" +#include "machine/terminal.h" + + +class lft_state : public driver_device +{ +public: + lft_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_maincpu(*this, "maincpu") + , m_terminal(*this, "terminal") + {} + + DECLARE_WRITE8_MEMBER(kbd_put); + DECLARE_WRITE16_MEMBER(term_w); + DECLARE_READ16_MEMBER(keyin_r); + DECLARE_READ16_MEMBER(status_r); + +private: + UINT8 m_term_data; + virtual void machine_reset(); + required_device<cpu_device> m_maincpu; + required_device<generic_terminal_device> m_terminal; +}; + +static ADDRESS_MAP_START(lft_mem, AS_PROGRAM, 16, lft_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x00000, 0x5ffff) AM_RAM + AM_RANGE(0xfc000, 0xfffff) AM_ROM AM_REGION("roms", 0) +ADDRESS_MAP_END + +static ADDRESS_MAP_START(lft_io, AS_IO, 16, lft_state) + ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) + // screen 1 + AM_RANGE(0x00, 0x01) AM_READNOP + AM_RANGE(0x04, 0x05) AM_READWRITE(keyin_r,term_w) + // screen 2 + AM_RANGE(0x02, 0x03) AM_READNOP + AM_RANGE(0x06, 0x07) AM_WRITENOP +ADDRESS_MAP_END + + +/* Input ports */ +static INPUT_PORTS_START( lft ) +INPUT_PORTS_END + +READ16_MEMBER( lft_state::keyin_r ) +{ + UINT16 ret = m_term_data; + m_term_data = 0; + return ret; +} + +READ16_MEMBER( lft_state::status_r ) +{ + return (m_term_data) ? 5 : 4; +} + +WRITE8_MEMBER( lft_state::kbd_put ) +{ + m_term_data = data; +} + +WRITE16_MEMBER( lft_state::term_w ) +{ + m_terminal->write(space, 0, data & 0x7f); // fix backspace +} + +void lft_state::machine_reset() +{ + m_term_data = 0; +} + +static MACHINE_CONFIG_START( lft, lft_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", I80186, 4000000) // no idea + MCFG_CPU_PROGRAM_MAP(lft_mem) + MCFG_CPU_IO_MAP(lft_io) + + /* video hardware */ + MCFG_DEVICE_ADD("terminal", GENERIC_TERMINAL, 0) + MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(lft_state, kbd_put)) +MACHINE_CONFIG_END + + +/* ROM definition */ +ROM_START( lft1230 ) + ROM_REGION(0x4000, "roms", 0) + ROM_LOAD16_BYTE( "1230lf29", 0x0000, 0x2000, CRC(11c87367) SHA1(0879650aa98e19a4e6ca7b6ee7874f81c9c8ccfa) ) + ROM_LOAD16_BYTE( "1230lf42", 0x0001, 0x2000, CRC(ab82b620) SHA1(8c7d93950703f348e5ce0f9e376d157dd6098c6a) ) +ROM_END + +ROM_START( lft1510 ) + ROM_REGION(0x4000, "roms", 0) + ROM_LOAD16_BYTE( "1510lfev", 0x2000, 0x1000, CRC(47dbb290) SHA1(b557e9a54a30d9a16edfdef4a6b12a5393d30bf3) ) + ROM_IGNORE(0x1000) + ROM_LOAD16_BYTE( "1510lfod", 0x2001, 0x1000, CRC(ba8c23fc) SHA1(d4b82f69fccd653b31e7bd05ee884b323ff0007b) ) + ROM_IGNORE(0x1000) +ROM_END + + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ +COMP( ????, lft1510, 0, 0, lft, lft, driver_device, 0, "LFT", "LFT 1510", MACHINE_IS_SKELETON) +COMP( ????, lft1230, lft1510, 0, lft, lft, driver_device, 0, "LFT", "LFT 1230", MACHINE_IS_SKELETON) |