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https://github.com/holub/mame
synced 2025-04-27 02:33:13 +03:00
starting to look at the sound section a bit more (nw)
This commit is contained in:
David Haywood
parent
23b0b548a5
commit
c10bfcf3cd
@ -58,6 +58,7 @@
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#include "video/ramdac.h"
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#include "machine/i8255.h"
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#include "machine/z80ctc.h"
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#include "cpu/z80/z80daisy.h"
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class megaphx_state : public driver_device
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{
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@ -88,6 +89,9 @@ public:
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DECLARE_READ16_MEMBER(megaphx_0x050002_r);
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DECLARE_WRITE16_MEMBER(megaphx_0x050000_w);
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DECLARE_READ8_MEMBER(megaphx_sound_sent_r);
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DECLARE_READ8_MEMBER(megaphx_sound_cmd_r);
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DECLARE_WRITE8_MEMBER(megaphx_sound_to_68k_w);
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DECLARE_WRITE_LINE_MEMBER(z80ctc_to0);
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DECLARE_WRITE_LINE_MEMBER(z80ctc_to1);
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@ -96,7 +100,12 @@ public:
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DECLARE_READ8_MEMBER(port_c_r);
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DECLARE_WRITE8_MEMBER(port_c_w);
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UINT8 port_c_value;
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int m_soundsent;
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UINT8 m_sounddata;
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UINT8 m_soundback;
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};
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@ -124,16 +133,21 @@ WRITE16_MEMBER(megaphx_state::tms_host_w)
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READ16_MEMBER(megaphx_state::megaphx_0x050002_r)
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{
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int pc = machine().device("maincpu")->safe_pc();
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int ret = m_soundback;
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m_soundback = 0;
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logerror("(%06x) megaphx_0x050002_r (from z80?) %04x\n", pc, mem_mask);
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return ioport("P3")->read();
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return ret ^ (rand()&0x40); // the 0x40 should be returned by the z80, so this still isn't working
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}
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WRITE16_MEMBER(megaphx_state::megaphx_0x050000_w)
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{
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int pc = machine().device("maincpu")->safe_pc();
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space.machine().scheduler().synchronize();
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logerror("(%06x) megaphx_0x050000_w (to z80?) %04x %04x\n", pc, data, mem_mask);
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m_soundsent = 0xff;
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m_sounddata = data;
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}
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@ -178,11 +192,34 @@ static ADDRESS_MAP_START( sound_map, AS_PROGRAM, 8, megaphx_state )
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AM_RANGE(0x4000, 0x401f) AM_RAM
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ADDRESS_MAP_END
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READ8_MEMBER(megaphx_state::megaphx_sound_cmd_r)
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{
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return m_sounddata;
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}
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READ8_MEMBER(megaphx_state::megaphx_sound_sent_r)
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{
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int ret = m_soundsent;
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m_soundsent = 0;
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return ret;
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}
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WRITE8_MEMBER(megaphx_state::megaphx_sound_to_68k_w)
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{
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int pc = machine().device("audiocpu")->safe_pc();
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logerror("(%04x) megaphx_sound_to_68k_w (to 68k?) %02x\n", pc, data);
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m_soundback = data;
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}
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static ADDRESS_MAP_START( sound_io, AS_IO, 8, megaphx_state )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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AM_RANGE(0x00, 0x07) AM_RAM
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// AM_RANGE(0x00, 0x07) AM_RAM
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AM_RANGE(0x20, 0x23) AM_DEVREADWRITE("ctc", z80ctc_device, read, write)
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AM_RANGE(0x31, 0x31) AM_READNOP
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AM_RANGE(0x30, 0x30) AM_READWRITE(megaphx_sound_cmd_r, megaphx_sound_to_68k_w)
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AM_RANGE(0x31, 0x31) AM_READ(megaphx_sound_sent_r)
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ADDRESS_MAP_END
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@ -292,55 +329,6 @@ static INPUT_PORTS_START( megaphx )
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PORT_DIPNAME( 0x0080, 0x0080, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0080, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_START("P3") // not dips according to service mode.. maybe comms with Z80?
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PORT_DIPNAME( 0x0001, 0x0001,"X")
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PORT_DIPSETTING( 0x0001, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0002, 0x0002, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0002, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0004, 0x0004, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0004, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0008, 0x0008, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0008, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0010, 0x0010, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0010, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0020, 0x0020, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0020, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_BIT( 0x0040, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, megaphx_state,megaphx_rand_r, NULL)
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PORT_DIPNAME( 0x0080, 0x0080, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0080, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0100, 0x0100, "Y" )
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PORT_DIPSETTING( 0x0100, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0200, 0x0200, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0200, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0400, 0x0400, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0400, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x0800, 0x0800, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x0800, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x1000, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x2000, 0x2000, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x2000, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x4000, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Unknown ) )
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PORT_DIPSETTING( 0x8000, DEF_STR( Off ) )
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PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
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INPUT_PORTS_END
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static ADDRESS_MAP_START( ramdac_map, AS_0, 8, megaphx_state )
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@ -399,7 +387,7 @@ static I8255A_INTERFACE( ppi8255_intf_0 )
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WRITE_LINE_MEMBER(megaphx_state::z80ctc_to0)
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{
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printf("z80ctc_to0 %d\n", state);
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logerror("z80ctc_to0 %d\n", state);
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}
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WRITE_LINE_MEMBER(megaphx_state::z80ctc_to1)
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@ -409,17 +397,26 @@ WRITE_LINE_MEMBER(megaphx_state::z80ctc_to1)
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WRITE_LINE_MEMBER(megaphx_state::z80ctc_to2)
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{
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printf("z80ctc_to2 %d\n", state);
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logerror("z80ctc_to2 %d\n", state);
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}
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static Z80CTC_INTERFACE( z80ctc_intf )
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{
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DEVCB_CPU_INPUT_LINE("audiocpu", INPUT_LINE_IRQ0), // interrupt handler
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DEVCB_DEVICE_LINE_MEMBER("ctc", megaphx_state, z80ctc_to0), // ZC/TO0 callback
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DEVCB_CPU_INPUT_LINE("audiocpu", INPUT_LINE_IRQ0), // runs in IM2 , vector set to 0x20 , values there are 0xCC, 0x02, 0xE6, 0x02, 0x09, 0x03, 0x23, 0x03 (so 02cc, 02e6, 0309, 0323, all of which are valid irq handlers)
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DEVCB_DEVICE_LINE_MEMBER("ctc", megaphx_state, z80ctc_to0), // ZC/TO0 callback // accessed
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DEVCB_DEVICE_LINE_MEMBER("ctc", megaphx_state, z80ctc_to1), // ZC/TO1 callback
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DEVCB_DEVICE_LINE_MEMBER("ctc", megaphx_state, z80ctc_to2) // ZC/TO2 callback
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DEVCB_DEVICE_LINE_MEMBER("ctc", megaphx_state, z80ctc_to2) // ZC/TO2 callback // accessed
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};
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static const z80_daisy_config daisy_chain[] =
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{
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{ "ctc" },
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{ NULL }
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};
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// just for debug.. so we can see what is in each of the roms
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static GFXLAYOUT_RAW( megaphxlay, 336, 1, 336*8, 336*8 )
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@ -442,6 +439,7 @@ static MACHINE_CONFIG_START( megaphx, megaphx_state )
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MCFG_CPU_PROGRAM_MAP(megaphx_tms_map)
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MCFG_CPU_ADD("audiocpu", Z80, 4000000) // unk freq
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MCFG_CPU_CONFIG(daisy_chain)
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MCFG_CPU_PROGRAM_MAP(sound_map)
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MCFG_CPU_IO_MAP(sound_io)
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