diff options
Diffstat (limited to 'src/mess/drivers/ticalc1x.c')
-rw-r--r-- | src/mess/drivers/ticalc1x.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/src/mess/drivers/ticalc1x.c b/src/mess/drivers/ticalc1x.c new file mode 100644 index 00000000000..1b87c1a4738 --- /dev/null +++ b/src/mess/drivers/ticalc1x.c @@ -0,0 +1,171 @@ +// license:BSD-3-Clause +// copyright-holders:hap +/*************************************************************************** + + Texas Instruments TMS1xxx/0970/0980 handheld calculators + + Texas Instruments WIZ-A-TRON + * TMC0907NL DP0907BS (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 ticalc1x_state : public driver_device +{ +public: + ticalc1x_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + m_button_matrix(*this, "IN") + { } + + required_device<cpu_device> m_maincpu; + required_ioport_array<4> m_button_matrix; + + 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(ticalc1x_state::read_k) +{ + UINT8 k = 0; + + // read selected button rows + for (int i = 0; i < 4; i++) + if (m_o & (1 << (i + 1))) + k |= m_button_matrix[i]->read(); + + return k; +} + +WRITE16_MEMBER(ticalc1x_state::write_r) +{ + // R..: select digit + m_r = data; +} + +WRITE16_MEMBER(ticalc1x_state::write_o) +{ + // O0-O6: digit segments A-G + // O1-O4: input mux + m_o = data; +} + + + +/*************************************************************************** + + Inputs + +***************************************************************************/ + +static INPUT_PORTS_START( wizatron ) + PORT_START("IN.0") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 ) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON3 ) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON4 ) + + PORT_START("IN.1") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_OTHER ) + + PORT_START("IN.2") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_OTHER ) + + PORT_START("IN.3") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_OTHER ) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_OTHER ) +INPUT_PORTS_END + + + +/*************************************************************************** + + Machine Config + +***************************************************************************/ + +void ticalc1x_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] = +{ + // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, +, -, X, /, r + 0x7e, 0x30, 0x6d, 0x79, 0x33, 0x5b, 0x5f, 0x70, + 0x7f, 0x7b, 0x26, 0x02, 0x35, 0x4a, 0x05, 0x00, + 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, + 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00 +}; + + +static MACHINE_CONFIG_START( wizatron, ticalc1x_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", TMS0970, MASTER_CLOCK) + MCFG_TMS1XXX_OUTPUT_PLA(wizatron_output_pla) + MCFG_TMS1XXX_READ_K(READ8(ticalc1x_state, read_k)) + MCFG_TMS1XXX_WRITE_O(WRITE16(ticalc1x_state, write_o)) + MCFG_TMS1XXX_WRITE_R(WRITE16(ticalc1x_state, write_r)) + + /* no video! */ + + /* no sound! */ +MACHINE_CONFIG_END + + + +/*************************************************************************** + + Game driver(s) + +***************************************************************************/ + +ROM_START( wizatron ) + ROM_REGION( 0x0400, "maincpu", 0 ) + ROM_LOAD( "dp0907bs", 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 ) |