diff options
Diffstat (limited to 'src/mess/drivers/hh_ucom4.c')
-rw-r--r-- | src/mess/drivers/hh_ucom4.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/src/mess/drivers/hh_ucom4.c b/src/mess/drivers/hh_ucom4.c new file mode 100644 index 00000000000..4a9a736c8cd --- /dev/null +++ b/src/mess/drivers/hh_ucom4.c @@ -0,0 +1,226 @@ +// license:BSD-3-Clause +// copyright-holders:hap +/*************************************************************************** + + NEC uCOM4 MCU handhelds + + +***************************************************************************/ + +#include "emu.h" +#include "cpu/ucom4/ucom4.h" +#include "sound/speaker.h" + +#include "tmpacman.lh" + + +class hh_ucom4_state : public driver_device +{ +public: + hh_ucom4_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + m_inp_matrix(*this, "IN"), + m_speaker(*this, "speaker"), + m_display_wait(33), + m_display_maxy(1), + m_display_maxx(0) + { } + + // devices + required_device<cpu_device> m_maincpu; + optional_ioport_array<4> m_inp_matrix; // max 4 + optional_device<speaker_sound_device> m_speaker; + + // misc common + UINT16 m_inp_mux; + + virtual void machine_start(); + virtual void machine_reset(); + + // display common + int m_display_wait; + int m_display_maxy; + int m_display_maxx; + + UINT32 m_grid; + UINT32 m_plate; + + UINT32 m_display_state[0x20]; + UINT32 m_display_cache[0x20]; + UINT8 m_display_decay[0x20][0x20]; + UINT16 m_7seg_mask[0x20]; + + TIMER_DEVICE_CALLBACK_MEMBER(display_decay_tick); + void display_update(); + + // game-specific handlers + +}; + + +void hh_ucom4_state::machine_start() +{ + // zerofill + memset(m_display_state, 0, sizeof(m_display_state)); + memset(m_display_cache, 0, sizeof(m_display_cache)); + memset(m_display_decay, 0, sizeof(m_display_decay)); + memset(m_7seg_mask, 0, sizeof(m_7seg_mask)); + + m_inp_mux = 0; + m_grid = 0; + m_plate = 0; + + // register for savestates + save_item(NAME(m_display_maxy)); + save_item(NAME(m_display_maxx)); + save_item(NAME(m_display_wait)); + + save_item(NAME(m_display_state)); + save_item(NAME(m_display_cache)); + save_item(NAME(m_display_decay)); + save_item(NAME(m_7seg_mask)); + + save_item(NAME(m_inp_mux)); + save_item(NAME(m_grid)); + save_item(NAME(m_plate)); +} + + +void hh_ucom4_state::machine_reset() +{ +} + +/*************************************************************************** + + Helper Functions + +***************************************************************************/ + +// LED segments +#if 0 +enum +{ + lA = 0x01, + lB = 0x02, + lC = 0x04, + lD = 0x08, + lE = 0x10, + lF = 0x20, + lG = 0x40, + lDP = 0x80 +}; +#endif + +// The device strobes the outputs very fast, it is unnoticeable to the user. +// To prevent flickering here, we need to simulate a decay. + + +void hh_ucom4_state::display_update() +{ + UINT32 active_state[0x20]; + + for (int y = 0; y < m_display_maxy; y++) + { + active_state[y] = 0; + + for (int x = 0; x < m_display_maxx; x++) + { + // turn on powered segments + if (m_display_state[y] >> x & 1) + m_display_decay[y][x] = m_display_wait; + + // determine active state + int ds = (m_display_decay[y][x] != 0) ? 1 : 0; + active_state[y] |= (ds << x); + } + } + + // on difference, send to output + for (int y = 0; y < m_display_maxy; y++) + if (m_display_cache[y] != active_state[y]) + { + if (m_7seg_mask[y] != 0) + output_set_digit_value(y, active_state[y] & m_7seg_mask[y]); + + const int mul = (m_display_maxx <= 10) ? 10 : 100; + for (int x = 0; x < m_display_maxx; x++) + output_set_lamp_value(y * mul + x, active_state[y] >> x & 1); + } + + memcpy(m_display_cache, active_state, sizeof(m_display_cache)); +} + +TIMER_DEVICE_CALLBACK_MEMBER(hh_ucom4_state::display_decay_tick) +{ + // slowly turn off unpowered segments + for (int y = 0; y < m_display_maxy; y++) + for (int x = 0; x < m_display_maxx; x++) + if (!(m_display_state[y] >> x & 1) && m_display_decay[y][x] != 0) + m_display_decay[y][x]--; + + display_update(); +} + + + +/*************************************************************************** + + Minidrivers (I/O, Inputs, Machine Config) + +***************************************************************************/ + +/*************************************************************************** + + Tomytronic Pac-Man (manufactured in Japan) + * boards are labeled TN-08 2E108E01 + * NEC uCOM-43 MCU, labeled D553C 160 + * cyan/red/green VFD display NEC FIP8AM18T + * bright yellow round casing + + known releases: + - Japan: Puck Man + - USA: Pac Man + - UK: Puckman (Tomy), and also as Munchman, published by Grandstand + - Australia: Pac Man-1, published by Futuretronics + +***************************************************************************/ + +static INPUT_PORTS_START( tmpacman ) +INPUT_PORTS_END + + +static MACHINE_CONFIG_START( tmpacman, hh_ucom4_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", NEC_D553, XTAL_430kHz) + + MCFG_DEFAULT_LAYOUT(layout_tmpacman) + + /* no video! */ + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) +MACHINE_CONFIG_END + + + + + + + +/*************************************************************************** + + Game driver(s) + +***************************************************************************/ + +ROM_START( tmpacman ) + ROM_REGION( 0x0800, "maincpu", 0 ) + ROM_LOAD( "d553c-160", 0x0000, 0x0800, CRC(b21a8af7) SHA1(e3122be1873ce76a4067386bf250802776f0c2f9) ) +ROM_END + + +CONS( 1981, tmpacman, 0, 0, tmpacman, tmpacman, driver_device, 0, "Tomy", "Pac Man (Tomy)", GAME_SUPPORTS_SAVE | GAME_REQUIRES_ARTWORK | GAME_NOT_WORKING ) |