From 8082e720004cd59ebcc545a22fa0692fe0b77eb7 Mon Sep 17 00:00:00 2001 From: Robert Date: Thu, 20 Nov 2014 00:46:42 +1100 Subject: --- src/mame/drivers/alinvade.c | 178 +++++++++++++++++++++++++++----------------- 1 file changed, 109 insertions(+), 69 deletions(-) diff --git a/src/mame/drivers/alinvade.c b/src/mame/drivers/alinvade.c index f1581ade5df..6e53ba1b0bc 100644 --- a/src/mame/drivers/alinvade.c +++ b/src/mame/drivers/alinvade.c @@ -5,39 +5,77 @@ Driver by David Haywood and Mariusz Wojcieszek TODO: - - 16 bytes are protected in the c*** range. I'm guessing they used a PROM to protect a + - 16 bytes are protected in the c*** range. I'm guessing they used a PROM to protect a simple sub-routine because just after that the program has a left-over located at 0xe000-0xe00f (yup, NOPs + a RTS) It's unknown at current stage what it really protects tho ... + Sound is entirely guesswork. + */ #include "emu.h" #include "cpu/m6502/m6502.h" +#include "sound/discrete.h" #include "alinvade.lh" class alinvade_state : public driver_device { public: alinvade_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag), - m_maincpu(*this, "maincpu"), - m_videoram(*this, "videoram") + : driver_device(mconfig, type, tag) + , m_maincpu(*this, "maincpu") + , m_videoram(*this, "videoram") + , m_discrete(*this, "discrete") { } - UINT8 irqmask; - UINT8 irqff; DECLARE_READ8_MEMBER(irqmask_r); DECLARE_WRITE8_MEMBER(irqmask_w); + DECLARE_WRITE8_MEMBER(sound_w); + DECLARE_WRITE8_MEMBER(sounden_w); INTERRUPT_GEN_MEMBER(vblank_irq); - required_device m_maincpu; - required_shared_ptr m_videoram; + UINT32 screen_update_alinvade(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); -public: +private: + UINT8 irqmask; + UINT8 irqff; virtual void machine_start(); virtual void machine_reset(); - UINT32 screen_update_alinvade(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); + required_device m_maincpu; + required_shared_ptr m_videoram; + required_device m_discrete; }; +static const discrete_dac_r1_ladder alinvade_music_dac = + {3, {0, RES_K(47), RES_K(12)}, 0, 0, 0, CAP_U(0.01)}; + +#define ALINVADE_MUSIC_CLK (75000) + +DISCRETE_SOUND_START(alinvade) + DISCRETE_INPUT_DATA (NODE_01) + + DISCRETE_NOTE(NODE_20, 1, ALINVADE_MUSIC_CLK, NODE_01, 255, 5, DISC_CLK_IS_FREQ) + + // Convert count to 7492 output + DISCRETE_TRANSFORM2(NODE_21, NODE_20, 2, "01>0+") + + DISCRETE_DAC_R1(NODE_22, NODE_21, DEFAULT_TTL_V_LOGIC_1, &alinvade_music_dac) + + DISCRETE_CRFILTER(NODE_80, NODE_22, RES_K(10), CAP_U(0.1)) + + DISCRETE_OUTPUT(NODE_80, 2500) + +DISCRETE_SOUND_END + +WRITE8_MEMBER( alinvade_state::sound_w ) +{ + m_discrete->write(space, NODE_01, (data^0x3f)<<2); +} + +WRITE8_MEMBER( alinvade_state::sounden_w ) +{ + machine().sound().system_enable(data == 4); +} + READ8_MEMBER(alinvade_state::irqmask_r) { return 0; // TODO: might be anything @@ -53,61 +91,61 @@ WRITE8_MEMBER(alinvade_state::irqmask_w) } static ADDRESS_MAP_START( alinvade_map, AS_PROGRAM, 8, alinvade_state ) - AM_RANGE(0x0000, 0x01ff) AM_RAM - AM_RANGE(0x0400, 0x0bff) AM_RAM AM_SHARE("videoram") + AM_RANGE(0x0000, 0x01ff) AM_RAM + AM_RANGE(0x0400, 0x0bff) AM_RAM AM_SHARE("videoram") AM_RANGE(0x0c00, 0x0dff) AM_RAM - AM_RANGE(0x2000, 0x2000) AM_WRITENOP //?? - AM_RANGE(0x4000, 0x4000) AM_READ_PORT("COIN") - AM_RANGE(0x6000, 0x6000) AM_READ_PORT("DSW") - AM_RANGE(0x8000, 0x8000) AM_READ_PORT("IN0") - AM_RANGE(0x8001, 0x8001) AM_READ_PORT("IN1") - AM_RANGE(0x8002, 0x8002) AM_READ_PORT("IN2") - AM_RANGE(0x8003, 0x8003) AM_READ_PORT("IN3") - AM_RANGE(0x8004, 0x8004) AM_READ_PORT("IN4") - AM_RANGE(0xa000, 0xa000) AM_WRITENOP //?? - AM_RANGE(0xc000, 0xc00f) AM_MIRROR(0xff0) AM_ROM AM_REGION("proms",0) - AM_RANGE(0xe000, 0xe3ff) AM_ROM - AM_RANGE(0xe400, 0xe400) AM_WRITENOP //?? - AM_RANGE(0xe800, 0xe800) AM_READWRITE(irqmask_r,irqmask_w) //?? - AM_RANGE(0xec00, 0xffff) AM_ROM + AM_RANGE(0x2000, 0x2000) AM_WRITE(sound_w) + AM_RANGE(0x4000, 0x4000) AM_READ_PORT("COIN") + AM_RANGE(0x6000, 0x6000) AM_READ_PORT("DSW") + AM_RANGE(0x8000, 0x8000) AM_READ_PORT("IN0") + AM_RANGE(0x8001, 0x8001) AM_READ_PORT("IN1") + AM_RANGE(0x8002, 0x8002) AM_READ_PORT("IN2") + AM_RANGE(0x8003, 0x8003) AM_READ_PORT("IN3") + AM_RANGE(0x8004, 0x8004) AM_READ_PORT("IN4") + AM_RANGE(0xa000, 0xa000) AM_WRITENOP //?? + AM_RANGE(0xc000, 0xc00f) AM_MIRROR(0xff0) AM_ROM AM_REGION("proms",0) + AM_RANGE(0xe000, 0xe3ff) AM_ROM + AM_RANGE(0xe400, 0xe400) AM_WRITE(sounden_w) + AM_RANGE(0xe800, 0xe800) AM_READWRITE(irqmask_r,irqmask_w) //?? + AM_RANGE(0xec00, 0xffff) AM_ROM ADDRESS_MAP_END static INPUT_PORTS_START( alinvade ) - PORT_START("COIN") - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_COIN1 ) - PORT_BIT(0xef, IP_ACTIVE_LOW, IPT_UNKNOWN ) - - PORT_START("IN0") - PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1) - PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) - - PORT_START("IN1") - PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(1) - PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) - - PORT_START("IN2") - PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(1) - PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) - - PORT_START("IN3") - PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_START1 ) - PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) - - PORT_START("IN4") - PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_START2 ) - PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) - - PORT_START("DSW") - PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) ) - PORT_DIPSETTING( 0x00, "2" ) - PORT_DIPSETTING( 0x01, "3" ) - PORT_DIPSETTING( 0x02, "4" ) - PORT_DIPSETTING( 0x03, "5" ) - PORT_DIPNAME( 0x04, 0x00, DEF_STR ( Unknown ) ) // read, but not tested afterwards? - PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) - PORT_DIPSETTING( 0x04, DEF_STR( On ) ) - PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED ) + PORT_START("COIN") + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_COIN1 ) + PORT_BIT(0xef, IP_ACTIVE_LOW, IPT_UNKNOWN ) + + PORT_START("IN0") + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1) + PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) + + PORT_START("IN1") + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(1) + PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) + + PORT_START("IN2") + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(1) + PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) + + PORT_START("IN3") + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_START1 ) + PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) + + PORT_START("IN4") + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_START2 ) + PORT_BIT(0xdf, IP_ACTIVE_HIGH, IPT_UNKNOWN ) + + PORT_START("DSW") + PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) ) + PORT_DIPSETTING( 0x00, "2" ) + PORT_DIPSETTING( 0x01, "3" ) + PORT_DIPSETTING( 0x02, "4" ) + PORT_DIPSETTING( 0x03, "5" ) + PORT_DIPNAME( 0x04, 0x00, DEF_STR ( Unknown ) ) // read, but not tested afterwards? + PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x04, DEF_STR( On ) ) + PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED ) INPUT_PORTS_END @@ -169,24 +207,26 @@ static MACHINE_CONFIG_START( alinvade, alinvade_state ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_DISCRETE_ADD("discrete", 0, alinvade) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MACHINE_CONFIG_END ROM_START( alinvade ) ROM_REGION( 0x10000, "maincpu", 0 ) // todo, check mapping - ROM_LOAD( "alien28.708", 0xe000, 0x0400, CRC(de376295) SHA1(e8eddbb1be1f8661c6b5b39c0d78a65bded65db2) ) - ROM_LOAD( "alien29.708", 0xec00, 0x0400, CRC(20212977) SHA1(9d24a6b403d968267079fa6241545bd5a01afebb) ) - ROM_LOAD( "alien30.708", 0xf000, 0x0400, CRC(734b691c) SHA1(9e562159061eecf4b1dee4ea0ee4752c901a54aa) ) - ROM_LOAD( "alien31.708", 0xf400, 0x0400, CRC(5a70535c) SHA1(2827e7d4bffca78bd035da04481e1e972ee2da39) ) - ROM_LOAD( "alien32.708", 0xf800, 0x0400, CRC(332dd234) SHA1(9974668344a2a351868a9e7757d1c3a497dc5621) ) - ROM_LOAD( "alien33.708", 0xfc00, 0x0400, CRC(e0d57fc7) SHA1(7b8ddcb4a86811592d2d0bbc61b2f19e5caa9ccc) ) + ROM_LOAD( "alien28.708", 0xe000, 0x0400, CRC(de376295) SHA1(e8eddbb1be1f8661c6b5b39c0d78a65bded65db2) ) + ROM_LOAD( "alien29.708", 0xec00, 0x0400, CRC(20212977) SHA1(9d24a6b403d968267079fa6241545bd5a01afebb) ) + ROM_LOAD( "alien30.708", 0xf000, 0x0400, CRC(734b691c) SHA1(9e562159061eecf4b1dee4ea0ee4752c901a54aa) ) + ROM_LOAD( "alien31.708", 0xf400, 0x0400, CRC(5a70535c) SHA1(2827e7d4bffca78bd035da04481e1e972ee2da39) ) + ROM_LOAD( "alien32.708", 0xf800, 0x0400, CRC(332dd234) SHA1(9974668344a2a351868a9e7757d1c3a497dc5621) ) + ROM_LOAD( "alien33.708", 0xfc00, 0x0400, CRC(e0d57fc7) SHA1(7b8ddcb4a86811592d2d0bbc61b2f19e5caa9ccc) ) ROM_REGION( 0x20, "proms", 0 ) ROM_LOAD( "prom", 0, 0x20, NO_DUMP ) - ROM_FILL( 0x00, 0x0f, 0xea ) - ROM_FILL( 0x0f, 0x01, 0x60 ) // rts for whole area, interrupt code jumps to various addresses here, check note on top. + ROM_FILL( 0x00, 0x0f, 0xea ) + ROM_FILL( 0x0f, 0x01, 0x60 ) // rts for whole area, interrupt code jumps to various addresses here, check note on top. ROM_END -GAMEL( 198?, alinvade, 0, alinvade, alinvade, driver_device, 0, ROT90, "Forbes?", "Alien Invaders", GAME_UNEMULATED_PROTECTION | GAME_NO_SOUND, layout_alinvade ) +GAMEL( 198?, alinvade, 0, alinvade, alinvade, driver_device, 0, ROT90, "Forbes?", "Alien Invaders", GAME_UNEMULATED_PROTECTION | GAME_IMPERFECT_SOUND, layout_alinvade ) -- cgit v1.2.3