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-rw-r--r--src/mess/drivers/simon.c188
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diff --git a/src/mess/drivers/simon.c b/src/mess/drivers/simon.c
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--- a/src/mess/drivers/simon.c
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-// license:BSD-3-Clause
-// copyright-holders:hap
-/***************************************************************************
-
- Milton Bradley Simon, created by Ralph Baer
-
- Revision A hardware:
- * TMS1000 (has internal ROM), DS75494 lamp driver
-
- Newer revisions have a smaller 16-pin MB4850 chip instead of the TMS1000.
- This one has been decapped too, but we couldn't find an internal ROM.
- It is possibly a cost-reduced custom ASIC specifically for Simon.
-
- Other games assumed to be on similar hardware:
- - Pocket Simon, but there's a chance it only exists with MB4850 chip
- - Super Simon (TMS1100)
-
-***************************************************************************/
-
-#include "emu.h"
-#include "cpu/tms0980/tms0980.h"
-#include "sound/speaker.h"
-
-#include "simon.lh" // clickable
-
-// master clock is a single stage RC oscillator: R=33K, C=100pf,
-// according to the TMS 1000 series data manual this is around 350kHz
-#define MASTER_CLOCK (350000)
-
-
-class simon_state : public driver_device
-{
-public:
- simon_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"),
- m_speaker(*this, "speaker")
- { }
-
- required_device<cpu_device> m_maincpu;
- required_ioport_array<4> m_button_matrix;
- required_device<speaker_sound_device> m_speaker;
-
- UINT16 m_r;
-
- DECLARE_READ8_MEMBER(read_k);
- DECLARE_WRITE16_MEMBER(write_o);
- DECLARE_WRITE16_MEMBER(write_r);
-
- virtual void machine_start();
-};
-
-
-/***************************************************************************
-
- I/O
-
-***************************************************************************/
-
-READ8_MEMBER(simon_state::read_k)
-{
- UINT8 k = 0;
-
- // read selected button rows
- for (int i = 0; i < 4; i++)
- {
- const int ki[4] = { 0, 1, 2, 9 };
- if (m_r >> ki[i] & 1)
- k |= m_button_matrix[i]->read();
- }
-
- return k;
-}
-
-WRITE16_MEMBER(simon_state::write_r)
-{
- // R4-R8 go through an 75494 IC first:
- // R4 -> 75494 IN6 -> green lamp
- // R5 -> 75494 IN3 -> red lamp
- // R6 -> 75494 IN5 -> yellow lamp
- // R7 -> 75494 IN2 -> blue lamp
- for (int i = 0; i < 4; i++)
- output_set_lamp_value(i, data >> (4 + i) & 1);
-
- // R8 -> 75494 IN0 -> speaker
- m_speaker->level_w(data >> 8 & 1);
-
- // R0,R1,R2,R9: input mux
- // R3: GND
- // other bits: N/C
- m_r = data;
-}
-
-WRITE16_MEMBER(simon_state::write_o)
-{
- // N/C
-}
-
-
-
-/***************************************************************************
-
- Inputs
-
-***************************************************************************/
-
-static INPUT_PORTS_START( simon )
- PORT_START("IN.0") // R0
- PORT_CONFNAME( 0x07, 0x02, "Game Select")
- PORT_CONFSETTING( 0x02, "1" )
- PORT_CONFSETTING( 0x01, "2" )
- PORT_CONFSETTING( 0x04, "3" )
- PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
-
- PORT_START("IN.1") // R1
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON5 ) PORT_NAME("Green Button")
- PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON6 ) PORT_NAME("Red Button")
- PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON7 ) PORT_NAME("Yellow Button")
- PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON8 ) PORT_NAME("Blue Button")
-
- PORT_START("IN.2") // R2
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_START ) PORT_NAME("Start")
- PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Last")
- PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_NAME("Longest")
- PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
-
- PORT_START("IN.3") // R9
- PORT_CONFNAME( 0x0f, 0x01, "Skill Level")
- PORT_CONFSETTING( 0x02, "1" )
- PORT_CONFSETTING( 0x04, "2" )
- PORT_CONFSETTING( 0x08, "3" )
- PORT_CONFSETTING( 0x01, "4" )
-INPUT_PORTS_END
-
-
-
-/***************************************************************************
-
- Machine Config
-
-***************************************************************************/
-
-void simon_state::machine_start()
-{
- m_r = 0;
- save_item(NAME(m_r));
-}
-
-
-static MACHINE_CONFIG_START( simon, simon_state )
-
- /* basic machine hardware */
- MCFG_CPU_ADD("maincpu", TMS1000, MASTER_CLOCK)
- MCFG_TMS1XXX_READ_K_CB(READ8(simon_state, read_k))
- MCFG_TMS1XXX_WRITE_O_CB(WRITE16(simon_state, write_o))
- MCFG_TMS1XXX_WRITE_R_CB(WRITE16(simon_state, write_r))
-
- MCFG_DEFAULT_LAYOUT(layout_simon)
-
- /* 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( simon )
- ROM_REGION( 0x0400, "maincpu", 0 )
- ROM_LOAD( "tms1000.u1", 0x0000, 0x0400, CRC(9961719d) SHA1(35dddb018a8a2b31f377ab49c1f0cb76951b81c0) )
-
- ROM_REGION( 867, "maincpu:mpla", 0 )
- ROM_LOAD( "tms1000_simon_mpla.pla", 0, 867, CRC(52f7c1f1) SHA1(dbc2634dcb98eac173ad0209df487cad413d08a5) )
- ROM_REGION( 365, "maincpu:opla", 0 )
- ROM_LOAD( "tms1000_simon_opla.pla", 0, 365, CRC(2943c71b) SHA1(bd5bb55c57e7ba27e49c645937ec1d4e67506601) )
-ROM_END
-
-
-CONS( 1978, simon, 0, 0, simon, simon, driver_device, 0, "Milton Bradley", "Simon (Rev. A)", GAME_SUPPORTS_SAVE )