trunk/src/mess/drivers/tc4.c
| r0 | r243610 | |
|---|
| 1 | // license:BSD-3-Clause |
| 2 | // copyright-holders:hap |
| 3 | /*************************************************************************** |
| 4 | |
| 5 | Coleco Total Control 4 |
| 6 | * TMS1400NLL MP7334-N2 (die labeled MP7334) |
| 7 | |
| 8 | |
| 9 | |
| 10 | TODO: |
| 11 | - MCU clock is unknown |
| 12 | |
| 13 | ***************************************************************************/ |
| 14 | |
| 15 | #include "emu.h" |
| 16 | #include "cpu/tms0980/tms0980.h" |
| 17 | #include "sound/speaker.h" |
| 18 | |
| 19 | #include "tc4.lh" |
| 20 | |
| 21 | // The master clock is a single stage RC oscillator: R=27.3K, C=100pf, |
| 22 | //.. |
| 23 | #define MASTER_CLOCK (475000) |
| 24 | |
| 25 | |
| 26 | class tc4_state : public driver_device |
| 27 | { |
| 28 | public: |
| 29 | tc4_state(const machine_config &mconfig, device_type type, const char *tag) |
| 30 | : driver_device(mconfig, type, tag), |
| 31 | m_maincpu(*this, "maincpu"), |
| 32 | // m_button_matrix(*this, "IN"), |
| 33 | m_speaker(*this, "speaker") |
| 34 | { } |
| 35 | |
| 36 | required_device<cpu_device> m_maincpu; |
| 37 | // required_ioport_array<2> m_button_matrix; |
| 38 | required_device<speaker_sound_device> m_speaker; |
| 39 | |
| 40 | UINT16 m_r; |
| 41 | UINT16 m_o; |
| 42 | |
| 43 | UINT16 m_display_state[0x10]; |
| 44 | UINT16 m_display_cache[0x10]; |
| 45 | UINT8 m_display_decay[0x100]; |
| 46 | |
| 47 | DECLARE_READ8_MEMBER(read_k); |
| 48 | DECLARE_WRITE16_MEMBER(write_o); |
| 49 | DECLARE_WRITE16_MEMBER(write_r); |
| 50 | |
| 51 | TIMER_DEVICE_CALLBACK_MEMBER(display_decay_tick); |
| 52 | void display_update(); |
| 53 | |
| 54 | virtual void machine_start(); |
| 55 | }; |
| 56 | |
| 57 | |
| 58 | |
| 59 | /*************************************************************************** |
| 60 | |
| 61 | LED Display |
| 62 | |
| 63 | ***************************************************************************/ |
| 64 | |
| 65 | // The device strobes the outputs very fast, it is unnoticeable to the user. |
| 66 | // To prevent flickering here, we need to simulate a decay. |
| 67 | |
| 68 | // decay time, in steps of 1ms |
| 69 | #define DISPLAY_DECAY_TIME 40 |
| 70 | |
| 71 | |
| 72 | void tc4_state::display_update() |
| 73 | { |
| 74 | UINT16 active_state[0x10]; |
| 75 | |
| 76 | for (int i = 0; i < 0x10; i++) |
| 77 | { |
| 78 | // update current state (note: R6 as extra column!) |
| 79 | m_display_state[i] = (m_r >> i & 1) ? (m_o | (m_r << 2 & 0x100)) : 0; |
| 80 | |
| 81 | active_state[i] = 0; |
| 82 | |
| 83 | for (int j = 0; j < 0x10; j++) |
| 84 | { |
| 85 | int di = j << 4 | i; |
| 86 | |
| 87 | // turn on powered segments |
| 88 | if (m_display_state[i] >> j & 1) |
| 89 | m_display_decay[di] = DISPLAY_DECAY_TIME; |
| 90 | |
| 91 | // determine active state |
| 92 | int ds = (m_display_decay[di] != 0) ? 1 : 0; |
| 93 | active_state[i] |= (ds << j); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | // on difference, send to output |
| 98 | for (int i = 0; i < 0x10; i++) |
| 99 | if (m_display_cache[i] != active_state[i]) |
| 100 | { |
| 101 | // if (index_is_7segled(i)) |
| 102 | // output_set_digit_value(i, BITSWAP8(active_state[i],7,0,1,2,3,4,5,6) & 0x7f); |
| 103 | |
| 104 | for (int j = 0; j < 9; j++) |
| 105 | output_set_lamp_value(i*10 + j, active_state[i] >> j & 1); |
| 106 | } |
| 107 | |
| 108 | memcpy(m_display_cache, active_state, sizeof(m_display_cache)); |
| 109 | } |
| 110 | |
| 111 | TIMER_DEVICE_CALLBACK_MEMBER(tc4_state::display_decay_tick) |
| 112 | { |
| 113 | // slowly turn off unpowered segments |
| 114 | for (int i = 0; i < 0x100; i++) |
| 115 | if (!(m_display_state[i & 0xf] >> (i>>4) & 1) && m_display_decay[i]) |
| 116 | m_display_decay[i]--; |
| 117 | |
| 118 | display_update(); |
| 119 | } |
| 120 | |
| 121 | |
| 122 | |
| 123 | /*************************************************************************** |
| 124 | |
| 125 | I/O |
| 126 | |
| 127 | ***************************************************************************/ |
| 128 | |
| 129 | READ8_MEMBER(tc4_state::read_k) |
| 130 | { |
| 131 | UINT8 k = 0; |
| 132 | |
| 133 | return k; |
| 134 | } |
| 135 | |
| 136 | WRITE16_MEMBER(tc4_state::write_o) |
| 137 | { |
| 138 | } |
| 139 | |
| 140 | WRITE16_MEMBER(tc4_state::write_r) |
| 141 | { |
| 142 | } |
| 143 | |
| 144 | |
| 145 | |
| 146 | |
| 147 | /*************************************************************************** |
| 148 | |
| 149 | Inputs |
| 150 | |
| 151 | ***************************************************************************/ |
| 152 | |
| 153 | static INPUT_PORTS_START( tc4 ) |
| 154 | INPUT_PORTS_END |
| 155 | |
| 156 | |
| 157 | |
| 158 | |
| 159 | /*************************************************************************** |
| 160 | |
| 161 | Machine Config |
| 162 | |
| 163 | ***************************************************************************/ |
| 164 | |
| 165 | void tc4_state::machine_start() |
| 166 | { |
| 167 | // zerofill |
| 168 | memset(m_display_state, 0, sizeof(m_display_state)); |
| 169 | memset(m_display_cache, 0, sizeof(m_display_cache)); |
| 170 | memset(m_display_decay, 0, sizeof(m_display_decay)); |
| 171 | |
| 172 | m_r = 0; |
| 173 | m_o = 0; |
| 174 | |
| 175 | // register for savestates |
| 176 | save_item(NAME(m_display_state)); |
| 177 | save_item(NAME(m_display_cache)); |
| 178 | save_item(NAME(m_display_decay)); |
| 179 | |
| 180 | save_item(NAME(m_r)); |
| 181 | save_item(NAME(m_o)); |
| 182 | } |
| 183 | |
| 184 | |
| 185 | static MACHINE_CONFIG_START( tc4, tc4_state ) |
| 186 | |
| 187 | /* basic machine hardware */ |
| 188 | MCFG_CPU_ADD("maincpu", TMS1400, MASTER_CLOCK) |
| 189 | MCFG_TMS1XXX_READ_K_CB(READ8(tc4_state, read_k)) |
| 190 | MCFG_TMS1XXX_WRITE_O_CB(WRITE16(tc4_state, write_o)) |
| 191 | MCFG_TMS1XXX_WRITE_R_CB(WRITE16(tc4_state, write_r)) |
| 192 | |
| 193 | MCFG_TIMER_DRIVER_ADD_PERIODIC("display_decay", tc4_state, display_decay_tick, attotime::from_msec(1)) |
| 194 | |
| 195 | MCFG_DEFAULT_LAYOUT(layout_tc4) |
| 196 | |
| 197 | /* no video! */ |
| 198 | |
| 199 | /* sound hardware */ |
| 200 | MCFG_SPEAKER_STANDARD_MONO("mono") |
| 201 | MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) |
| 202 | MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) |
| 203 | MACHINE_CONFIG_END |
| 204 | |
| 205 | |
| 206 | |
| 207 | /*************************************************************************** |
| 208 | |
| 209 | Game driver(s) |
| 210 | |
| 211 | ***************************************************************************/ |
| 212 | |
| 213 | ROM_START( tc4 ) |
| 214 | ROM_REGION( 0x1000, "maincpu", 0 ) |
| 215 | ROM_LOAD( "tms1400nll_mp7334", 0x0000, 0x1000, CRC(923f3821) SHA1(a9ae342d7ff8dae1dedcd1e4984bcfae68586581) ) |
| 216 | |
| 217 | ROM_REGION( 867, "maincpu:mpla", 0 ) |
| 218 | ROM_LOAD( "tms1100_default_mpla.pla", 0, 867, CRC(62445fc9) SHA1(d6297f2a4bc7a870b76cc498d19dbb0ce7d69fec) ) |
| 219 | ROM_REGION( 557, "maincpu:opla", 0 ) |
| 220 | ROM_LOAD( "tms1400_tc4_opla.pla", 0, 557, CRC(3b908725) SHA1(f83bf5faa5b3cb51f87adc1639b00d6f9a71ad19) ) |
| 221 | ROM_END |
| 222 | |
| 223 | |
| 224 | |
| 225 | CONS( 1981, tc4, 0, 0, tc4, tc4, driver_device, 0, "Coleco", "Total Control 4", GAME_NOT_WORKING | GAME_SUPPORTS_SAVE ) |