diff options
Diffstat (limited to 'src/mess/drivers/wizatron.c')
-rw-r--r-- | src/mess/drivers/wizatron.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/mess/drivers/wizatron.c b/src/mess/drivers/wizatron.c new file mode 100644 index 00000000000..3633c8cb8ff --- /dev/null +++ b/src/mess/drivers/wizatron.c @@ -0,0 +1,136 @@ +// license:BSD-3-Clause +// copyright-holders:hap +/*************************************************************************** + + Texas Instruments WIZ-A-TRON + * TMC0907NL ZA0379 (die labeled 0970F-07B) + + Other handhelds assumed to be on similar hardware: + - Math Magic + - Little Professor + + + TODO: + - the rom goes in an infinite loop very soon, cpu missing emulation? + +***************************************************************************/ + +#include "emu.h" +#include "cpu/tms0980/tms0980.h" + +// master clock is cpu internal, the value below is an approximation +#define MASTER_CLOCK (250000) + + +class wizatron_state : public driver_device +{ +public: + wizatron_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu") + { } + + required_device<cpu_device> m_maincpu; + + UINT16 m_r; + UINT16 m_o; + + DECLARE_READ8_MEMBER(read_k); + DECLARE_WRITE16_MEMBER(write_o); + DECLARE_WRITE16_MEMBER(write_r); + + virtual void machine_start(); +}; + + +/*************************************************************************** + + I/O + +***************************************************************************/ + +READ8_MEMBER(wizatron_state::read_k) +{ + UINT8 k = 0; + + return k; +} + +WRITE16_MEMBER(wizatron_state::write_r) +{ + m_r = data; +} + +WRITE16_MEMBER(wizatron_state::write_o) +{ + m_o = data; +} + + + +/*************************************************************************** + + Inputs + +***************************************************************************/ + +static INPUT_PORTS_START( wizatron ) +INPUT_PORTS_END + + + +/*************************************************************************** + + Machine Config + +***************************************************************************/ + +void wizatron_state::machine_start() +{ + m_r = 0; + m_o = 0; + + save_item(NAME(m_r)); + save_item(NAME(m_o)); +} + + +static const UINT16 wizatron_output_pla[0x20] = +{ + /* O output PLA configuration currently unknown */ + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f +}; + + +static MACHINE_CONFIG_START( wizatron, wizatron_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", TMS0970, MASTER_CLOCK) + MCFG_TMS1XXX_OUTPUT_PLA(wizatron_output_pla) + MCFG_TMS1XXX_READ_K(READ8(wizatron_state, read_k)) + MCFG_TMS1XXX_WRITE_O(WRITE16(wizatron_state, write_o)) + MCFG_TMS1XXX_WRITE_R(WRITE16(wizatron_state, write_r)) + + /* no video! */ + + /* no sound! */ +MACHINE_CONFIG_END + + + +/*************************************************************************** + + Game driver(s) + +***************************************************************************/ + +ROM_START( wizatron ) + ROM_REGION( 0x0400, "maincpu", ROMREGION_ERASE00 ) + ROM_LOAD( "za0379", 0x0000, 0x0400, CRC(5a6af094) SHA1(b1f27e1f13f4db3b052dd50fb08dbf9c4d8db26e) ) +ROM_END + + +CONS( 1977, wizatron, 0, 0, wizatron, wizatron, driver_device, 0, "Texas Instruments", "Wiz-A-Tron", GAME_NOT_WORKING | GAME_SUPPORTS_SAVE | GAME_NO_SOUND_HW ) |