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https://github.com/holub/mame
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epos.cpp: Implemented Tristar 9000 hardware ay-3-8910 port A 'multiplexer', PSG REGISTERS test can (in theory) pass with dipswitches set now.
Switched Tristar 8000 hardware to use ay-3-8912 as shown on schematics. [Lord Nightmare]
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Lord-Nightmare
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21d0662302
commit
321d93323f
@ -25,7 +25,7 @@
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- Super Blob uses a busy loop during the color test to split the screen
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between the two palettes. This effect is not emulated, but since both
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halfs of the palette are identical, this is not an issue. See $039c.
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halves of the palette are identical, this is not an issue. See $039c.
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The other games have a different color test, not using the busy loop.
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- dealer/beastf/revngr84: "PSG registers not OK" in service mode thru
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@ -72,7 +72,6 @@ static ADDRESS_MAP_START( epos_map, AS_PROGRAM, 8, epos_state )
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AM_RANGE(0x8000, 0xffff) AM_RAM AM_SHARE("videoram")
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( dealer_map, AS_PROGRAM, 8, epos_state )
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AM_RANGE(0x0000, 0x5fff) AM_ROMBANK("bank1")
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AM_RANGE(0x6000, 0x6fff) AM_ROMBANK("bank2")
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@ -86,7 +85,7 @@ ADDRESS_MAP_END
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*
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*************************************/
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static ADDRESS_MAP_START( io_map, AS_IO, 8, epos_state )
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static ADDRESS_MAP_START( epos_io_map, AS_IO, 8, epos_state )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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AM_RANGE(0x00, 0x00) AM_READ_PORT("DSW") AM_DEVWRITE("watchdog", watchdog_timer_device, reset_w)
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AM_RANGE(0x01, 0x01) AM_READ_PORT("SYSTEM") AM_WRITE(port_1_w)
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@ -106,7 +105,7 @@ static ADDRESS_MAP_START( dealer_io_map, AS_IO, 8, epos_state )
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AM_RANGE(0x40, 0x40) AM_DEVWRITE("watchdog", watchdog_timer_device, reset_w)
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ADDRESS_MAP_END
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READ8_MEMBER(epos_state::read_prta)
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READ8_MEMBER(epos_state::i8255_porta_r)
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{
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uint8_t data = 0xff;
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@ -124,12 +123,24 @@ READ8_MEMBER(epos_state::read_prta)
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There's a separate ROM check for banked U04 at 30F3.
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It looks like dealer/revenger uses ppi8255 to control bankswitching.
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*/
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WRITE8_MEMBER(epos_state::write_prtc)
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WRITE8_MEMBER(epos_state::i8255_portc_w)
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{
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membank("bank2")->set_entry(data & 0x01);
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m_input_multiplex = (data >> 5) & 3;
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}
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READ8_MEMBER(epos_state::ay_porta_mpx_r)
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{
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return (m_ay_porta_multiplex ? 0xFF : ioport("DSW")->read());
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}
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WRITE8_MEMBER(epos_state::flip_screen_w)
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{
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flip_screen_set(BIT(data, 7));
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// bit 6: ay8910 port A/B multiplexer read
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m_ay_porta_multiplex = BIT(data, 6);
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}
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/*************************************
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*
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* Port definitions
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@ -414,6 +425,7 @@ MACHINE_START_MEMBER(epos_state,epos)
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save_item(NAME(m_palette_bank));
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save_item(NAME(m_counter));
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save_item(NAME(m_input_multiplex));
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save_item(NAME(m_ay_porta_multiplex));
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}
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void epos_state::machine_reset()
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@ -421,6 +433,7 @@ void epos_state::machine_reset()
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m_palette_bank = 0;
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m_counter = 0;
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m_input_multiplex = 3;
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m_ay_porta_multiplex = 0;
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}
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@ -441,7 +454,7 @@ static MACHINE_CONFIG_START( epos ) /* EPOS TRISTAR 8000 PCB */
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu", Z80, XTAL_11MHz/4) /* 2.75 MHz schematics confirm 11MHz XTAL (see notes) */
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MCFG_CPU_PROGRAM_MAP(epos_map)
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MCFG_CPU_IO_MAP(io_map)
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MCFG_CPU_IO_MAP(epos_io_map)
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MCFG_CPU_VBLANK_INT_DRIVER("screen", epos_state, irq0_line_hold)
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MCFG_WATCHDOG_ADD("watchdog")
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@ -459,7 +472,7 @@ static MACHINE_CONFIG_START( epos ) /* EPOS TRISTAR 8000 PCB */
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/* sound hardware */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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MCFG_SOUND_ADD("aysnd", AY8910, XTAL_11MHz/4) /* should be a divisor of 16? - clock not confirmed - schematics show 8912 */
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MCFG_SOUND_ADD("aysnd", AY8912, XTAL_11MHz/4) /* should be a divisor of 16? - clock not confirmed - schematics show 8912 */
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
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MACHINE_CONFIG_END
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@ -473,8 +486,8 @@ static MACHINE_CONFIG_START( dealer ) /* EPOS TRISTAR 9000 PCB */
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MCFG_CPU_VBLANK_INT_DRIVER("screen", epos_state, irq0_line_hold)
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MCFG_DEVICE_ADD("ppi8255", I8255A, 0)
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MCFG_I8255_IN_PORTA_CB(READ8(epos_state, read_prta))
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MCFG_I8255_OUT_PORTC_CB(WRITE8(epos_state, write_prtc))
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MCFG_I8255_IN_PORTA_CB(READ8(epos_state, i8255_porta_r))
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MCFG_I8255_OUT_PORTC_CB(WRITE8(epos_state, i8255_portc_w))
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MCFG_NVRAM_ADD_0FILL("nvram")
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@ -498,9 +511,9 @@ static MACHINE_CONFIG_START( dealer ) /* EPOS TRISTAR 9000 PCB */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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MCFG_SOUND_ADD("aysnd", AY8910, XTAL_22_1184MHz/32) /* 0.6912 MHz (measured) */
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
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MCFG_AY8910_PORT_A_READ_CB(IOPORT("DSW"))
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MCFG_AY8910_PORT_A_READ_CB(READ8(epos_state, ay_porta_mpx_r))
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// port a writes?
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MCFG_AY8910_PORT_B_WRITE_CB(WRITE8(epos_state, flip_screen_w))
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MCFG_AY8910_PORT_B_WRITE_CB(WRITE8(epos_state, flip_screen_w)) // flipscreen and ay port a multiplex control
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MACHINE_CONFIG_END
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@ -510,6 +523,7 @@ MACHINE_CONFIG_END
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*
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*************************************/
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// Tristar 8000 boards:
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ROM_START( megadon )
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ROM_REGION( 0x10000, "maincpu", 0 )
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ROM_LOAD( "2732u10b.bin", 0x0000, 0x1000, CRC(af8fbe80) SHA1(2d7857616462112fe17343a9357ee51d8f965a0f) )
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@ -622,6 +636,7 @@ ROM_START( igmo )
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ROM_END
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// Tristar 9000 boards:
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ROM_START( dealer )
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ROM_REGION( 0x40000, "maincpu", 0 )
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ROM_LOAD( "u1.bin", 0x0000, 0x2000, CRC(e06f3563) SHA1(0d58cd1f2e1ca89adb9c64d7dd520bb1f2d50f1a) )
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@ -703,8 +718,6 @@ ROM_START( revenger )
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ROM_LOAD( "revngr84.nv", 0, 0x1000, CRC(a4417770) SHA1(92eded82db0810e7818d2f52a0497032f390fcc1) )
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ROM_END
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ROM_START( beastf )
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ROM_REGION( 0x40000, "maincpu", 0 )
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ROM_LOAD( "u_1__beastie__feastie__b09084.m5l2764k.u1", 0x0000, 0x2000, CRC(820d4019) SHA1(e953aaeeb626776dd86c521066b553d054ae4422) ) /* labeled as "U 1 // BEASTIE // FEASTIE // B09084" */
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@ -27,10 +27,12 @@ public:
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/* misc */
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int m_counter;
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int m_input_multiplex;
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bool m_ay_porta_multiplex;
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DECLARE_WRITE8_MEMBER(dealer_decrypt_rom);
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DECLARE_WRITE8_MEMBER(port_1_w);
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DECLARE_READ8_MEMBER(read_prta);
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DECLARE_WRITE8_MEMBER(write_prtc);
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DECLARE_READ8_MEMBER(i8255_porta_r);
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DECLARE_WRITE8_MEMBER(i8255_portc_w);
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DECLARE_READ8_MEMBER(ay_porta_mpx_r);
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DECLARE_WRITE8_MEMBER(flip_screen_w);
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DECLARE_WRITE8_MEMBER(dealer_pal_w);
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DECLARE_DRIVER_INIT(dealer);
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@ -55,19 +55,12 @@ void epos_state::set_pal_color( uint8_t offset, uint8_t data )
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m_palette->set_pen_color(offset, rgb_t(r,g,b));
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}
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// later games uses a dynamic palette instead of prom
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// later (tristar 9000) games uses a dynamic palette instead of prom
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WRITE8_MEMBER(epos_state::dealer_pal_w)
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{
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set_pal_color(offset,data);
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}
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WRITE8_MEMBER(epos_state::flip_screen_w)
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{
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flip_screen_set(BIT(data, 7));
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// bit 6: ay8910 port A/B multiplexer read?
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}
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WRITE8_MEMBER(epos_state::port_1_w)
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{
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/* D0 - start light #1
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