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https://github.com/holub/mame
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Model 1: add skeleton device for Z80 version of the MPEG sound board. No playback, just running the Z80. [R. Belmont]
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R. Belmont
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vendored
@ -1817,6 +1817,8 @@ src/mame/audio/decobsmt.h svneol=native#text/plain
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src/mame/audio/depthch.c svneol=native#text/plain
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src/mame/audio/dkong.c svneol=native#text/plain
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src/mame/audio/dragrace.c svneol=native#text/plain
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src/mame/audio/dsbz80.c svneol=native#text/plain
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src/mame/audio/dsbz80.h svneol=native#text/plain
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src/mame/audio/exidy.c svneol=native#text/plain
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src/mame/audio/exidy.h svneol=native#text/plain
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src/mame/audio/exidy440.c svneol=native#text/plain
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246
src/mame/audio/dsbz80.c
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246
src/mame/audio/dsbz80.c
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@ -0,0 +1,246 @@
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/***************************************************************************
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Sega Z80 Digital Sound Board
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used for Model 1/2/3
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***************************************************************************/
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#define ADDRESS_MAP_MODERN
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#include "emu.h"
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#include "audio/dsbz80.h"
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#define Z80_TAG "mpegcpu"
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#define YMZ770_TAG "ymz770"
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static ADDRESS_MAP_START( dsbz80_map, AS_PROGRAM, 8, dsbz80_device )
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AM_RANGE(0x0000, 0x7fff) AM_ROM AM_REGION(":mpegcpu", 0)
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AM_RANGE(0x8000, 0xffff) AM_RAM
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( dsbz80io_map, AS_IO, 8, dsbz80_device )
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AM_RANGE(0xe0, 0xe0) AM_MIRROR(0xff00) AM_WRITE(mpeg_trigger_w)
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AM_RANGE(0xe2, 0xe4) AM_MIRROR(0xff00) AM_READWRITE(mpeg_pos_r, mpeg_start_w)
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AM_RANGE(0xe5, 0xe7) AM_MIRROR(0xff00) AM_WRITE(mpeg_end_w)
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AM_RANGE(0xe8, 0xe8) AM_MIRROR(0xff00) AM_WRITE(mpeg_volume_w)
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AM_RANGE(0xe9, 0xe9) AM_MIRROR(0xff00) AM_WRITE(mpeg_stereo_w)
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AM_RANGE(0xf0, 0xf0) AM_MIRROR(0xff00) AM_READ(latch_r)
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AM_RANGE(0xf1, 0xf1) AM_MIRROR(0xff00) AM_READ(status_r)
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ADDRESS_MAP_END
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MACHINE_CONFIG_FRAGMENT( dsbz80 )
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MCFG_CPU_ADD(Z80_TAG, Z80, 1000000) /* unknown clock, but probably pretty slow considering the z80 does like nothing */
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MCFG_CPU_PROGRAM_MAP(dsbz80_map)
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MCFG_CPU_IO_MAP(dsbz80io_map)
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#if 0
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MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
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MCFG_YMZ770_ADD(YMZ770_TAG, 8000000) /* clock ignored for this */
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MCFG_SOUND_ROUTE(0, "lspeaker", 1.0)
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MCFG_SOUND_ROUTE(1, "rspeaker", 1.0)
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#endif
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MACHINE_CONFIG_END
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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const device_type DSBZ80 = &device_creator<dsbz80_device>;
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//-------------------------------------------------
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// machine_config_additions - device-specific
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// machine configurations
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//-------------------------------------------------
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machine_config_constructor dsbz80_device::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( dsbz80 );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// dsbz80_device - constructor
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//-------------------------------------------------
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dsbz80_device::dsbz80_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, DSBZ80, "Sega Z80-based Digital Sound Board", tag, owner, clock),
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m_ourcpu(*this, Z80_TAG),
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m_ymz770(*this, YMZ770_TAG)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void dsbz80_device::device_start()
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{
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void dsbz80_device::device_reset()
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{
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m_dsb_latch = 0;
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status = 1;
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start = end = 0;
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}
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WRITE8_MEMBER(dsbz80_device::latch_w)
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{
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device_set_input_line(m_ourcpu, INPUT_LINE_IRQ0, ASSERT_LINE);
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m_dsb_latch = data;
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status |= 2;
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// printf("%02x to DSB latch\n", data);
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}
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READ8_MEMBER(dsbz80_device::latch_r)
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{
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device_set_input_line(m_ourcpu, INPUT_LINE_IRQ0, CLEAR_LINE);
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// printf("DSB Z80 read %02x\n", m_dsb_latch);
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status &= ~2;
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return m_dsb_latch;
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}
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WRITE8_MEMBER(dsbz80_device::mpeg_trigger_w)
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{
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mp_state = data;
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if (data == 0) // stop
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{
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// MPEG_Stop_Playing();
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// printf("MPEG stop\n");
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}
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else if (data == 1) // play without loop
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{
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// MPEG_Set_Loop(NULL, 0);
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// MPEG_Play_Memory(ROM + mp_start, mp_end-mp_start);
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// printf("MPEG start, one-shot from %x\n", mp_start);
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}
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else if (data == 2) // play with loop
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{
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// MPEG_Play_Memory(ROM + mp_start, mp_end-mp_start);
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// printf("MPEG start, loop from %x\n", mp_start);
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}
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}
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READ8_MEMBER(dsbz80_device::mpeg_pos_r)
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{
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int mp_prg = 0; //MPEG_Get_Progress(); // returns the byte offset currently playing
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mp_prg += mp_start;
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switch (offset)
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{
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case 0:
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return (mp_prg>>16)&0xff;
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break;
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case 1:
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return (mp_prg>>8)&0xff;
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break;
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case 2:
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return mp_prg&0xff;
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break;
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}
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return 0;
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}
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/* NOTE: writes to the start and end while playback is already in progress
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get latched. When the current stream ends, the MPEG hardware starts playing
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immediately from the latched start and end position. In this way, the Z80
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enforces looping where appropriate and multi-part songs in other cases
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(song #16 is a good example)
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*/
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WRITE8_MEMBER(dsbz80_device::mpeg_start_w)
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{
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switch (offset)
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{
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case 0:
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start &= 0x00ffff;
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start |= (int)data<<16;
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break;
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case 1:
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start &= 0xff00ff;
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start |= (int)data<<8;
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break;
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case 2:
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start &= 0xffff00;
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start |= data;
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if (mp_state == 0)
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{
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mp_start = start;
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}
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else
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{
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lp_start = start;
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// SWA: if loop end is zero, it means "keep previous end marker"
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if (lp_end == 0)
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{
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// MPEG_Set_Loop(ROM + lp_start, mp_end-lp_start);
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}
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else
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{
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// MPEG_Set_Loop(ROM + lp_start, lp_end-lp_start);
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}
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}
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break;
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}
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}
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WRITE8_MEMBER(dsbz80_device::mpeg_end_w)
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{
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switch (offset)
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{
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case 0:
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end &= 0x00ffff;
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end |= (int)data<<16;
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break;
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case 1:
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end &= 0xff00ff;
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end |= (int)data<<8;
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break;
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case 2:
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end &= 0xffff00;
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end |= data;
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if (mp_state == 0)
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{
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mp_end = end;
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}
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else
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{
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lp_end = end;
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// MPEG_Set_Loop(ROM + lp_start, lp_end-lp_start);
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}
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break;
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}
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}
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WRITE8_MEMBER(dsbz80_device::mpeg_volume_w)
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{
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mp_vol = 0x7f - data;
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}
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WRITE8_MEMBER(dsbz80_device::mpeg_stereo_w)
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{
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mp_pan = data & 3;
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}
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READ8_MEMBER(dsbz80_device::status_r)
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{
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// bit 0 = ??? (must be 1 for most games)
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// bit 1 = command is pending (used by SWA instead of IRQ)
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// other bits = ???
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// SWA requires that status & 0x38 = 0 or else it loops endlessly...
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return status;
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}
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57
src/mame/audio/dsbz80.h
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57
src/mame/audio/dsbz80.h
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@ -0,0 +1,57 @@
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#pragma once
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#ifndef __DSBZ80_H__
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#define __DSBZ80_H__
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#include "emu.h"
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#include "cpu/z80/z80.h"
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#include "sound/ymz770.h"
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#define DSBZ80_TAG "dsbz80"
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#define MCFG_DSBZ80_ADD(_tag) \
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MCFG_DEVICE_ADD(_tag, DSBZ80, 0)
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class dsbz80_device : public device_t
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{
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public:
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// construction/destruction
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dsbz80_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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// optional information overrides
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virtual machine_config_constructor device_mconfig_additions() const;
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DECLARE_WRITE8_MEMBER(latch_w);
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required_device<cpu_device> m_ourcpu;
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optional_device<ymz770_device> m_ymz770;
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DECLARE_WRITE8_MEMBER(mpeg_trigger_w);
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DECLARE_WRITE8_MEMBER(mpeg_start_w);
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DECLARE_WRITE8_MEMBER(mpeg_end_w);
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DECLARE_WRITE8_MEMBER(mpeg_volume_w);
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DECLARE_WRITE8_MEMBER(mpeg_stereo_w);
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DECLARE_READ8_MEMBER(mpeg_pos_r);
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DECLARE_READ8_MEMBER(latch_r);
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DECLARE_READ8_MEMBER(status_r);
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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private:
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UINT8 m_dsb_latch;
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UINT32 mp_start, mp_end, mp_vol, mp_pan, mp_state, lp_start, lp_end, start, end;
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int status;
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};
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// device type definition
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extern const device_type DSBZ80;
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#endif /* __DSBZ80_H__ */
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@ -634,8 +634,6 @@ Notes:
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#include "machine/nvram.h"
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#include "includes/model1.h"
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static READ16_HANDLER( io_r )
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{
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static const char *const analognames[] = { "AN0", "AN1", "AN2", "AN3", "AN4", "AN5", "AN6", "AN7" };
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@ -860,6 +858,11 @@ static WRITE16_HANDLER( snd_latch_to_68k_w )
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state->m_fifo_wptr++;
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if (state->m_fifo_wptr >= ARRAY_LENGTH(state->m_to_68k)) state->m_fifo_wptr = 0;
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if (state->m_dsbz80 != NULL)
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{
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state->m_dsbz80->latch_w(*space, 0, data);
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}
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// signal the 68000 that there's data waiting
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cputag_set_input_line(space->machine(), "audiocpu", 2, HOLD_LINE);
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// give the 68k time to reply
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@ -1334,10 +1337,10 @@ ROM_START( swa )
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ROM_LOAD( "mpr-16484.bin", 0x000000, 0x200000, CRC(9d4c334d) SHA1(8b4d903f14559fed425d225bb23ccfe8da23cbd3) )
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ROM_LOAD( "mpr-16485.bin", 0x200000, 0x200000, CRC(95aadcad) SHA1(4276db655db9834692c3843eb96a3e3a89cb7252) )
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ROM_REGION( 0x20000, "cpu2", 0 ) /* Z80 DSB code */
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ROM_REGION( 0x20000, "mpegcpu", 0 ) /* Z80 DSB code */
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ROM_LOAD( "epr-16471.bin", 0x000000, 0x020000, CRC(f4ee84a4) SHA1(f12b214e6f195b0e5f49ba9f41d8e54bfcea9acc) )
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ROM_REGION( 0x400000, "mpeg", 0 ) /* DSB MPEG data */
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ROM_REGION( 0x400000, "ymz770", 0 ) /* DSB MPEG data */
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ROM_LOAD( "mpr-16514.bin", 0x000000, 0x200000, CRC(3175b0be) SHA1(63649d053c8c17ce1746d16d0cc8202be20c302f) )
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ROM_LOAD( "mpr-16515.bin", 0x000000, 0x200000, CRC(3114d748) SHA1(9ef090623cdd2a1d06b5d1bc4b9a07ab4eff5b76) )
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@ -1543,6 +1546,10 @@ static MACHINE_CONFIG_START( model1, model1_state )
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MCFG_SOUND_ROUTE(1, "rspeaker", 1.0)
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED(swa, model1)
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MCFG_DSBZ80_ADD(DSBZ80_TAG)
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_START( model1_vr, model1_state )
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MCFG_CPU_ADD("maincpu", V60, 16000000)
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MCFG_CPU_PROGRAM_MAP(model1_vr_mem)
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@ -1591,7 +1598,7 @@ MACHINE_CONFIG_END
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GAME( 1993, vf, 0, model1, vf, 0, ROT0, "Sega", "Virtua Fighter", GAME_IMPERFECT_GRAPHICS )
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GAME( 1992, vr, 0, model1_vr, vr, 0, ROT0, "Sega", "Virtua Racing", GAME_IMPERFECT_GRAPHICS )
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GAME( 1993, vformula, vr, model1_vr, vr, 0, ROT0, "Sega", "Virtua Formula", GAME_IMPERFECT_GRAPHICS )
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GAME( 1993, swa, 0, model1, swa, 0, ROT0, "Sega", "Star Wars Arcade", GAME_NOT_WORKING | GAME_IMPERFECT_SOUND )
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GAME( 1993, swa, 0, swa, swa, 0, ROT0, "Sega", "Star Wars Arcade", GAME_NOT_WORKING | GAME_IMPERFECT_SOUND )
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GAME( 1994, wingwar, 0, model1, wingwar, 0, ROT0, "Sega", "Wing War (World)", GAME_NOT_WORKING )
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GAME( 1994, wingwaru, wingwar, model1, wingwar, 0, ROT0, "Sega", "Wing War (US)", GAME_NOT_WORKING )
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GAME( 1994, wingwarj, wingwar, model1, wingwar, 0, ROT0, "Sega", "Wing War (Japan)", GAME_NOT_WORKING )
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@ -1,3 +1,5 @@
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#include "audio/dsbz80.h"
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typedef void (*tgp_func)(running_machine &machine);
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enum {FIFO_SIZE = 256};
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@ -7,7 +9,15 @@ class model1_state : public driver_device
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{
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public:
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model1_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag) { }
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_audiocpu(*this, "maincpu"),
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m_dsbz80(*this, DSBZ80_TAG)
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{ }
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required_device<cpu_device> m_maincpu; // V60
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required_device<cpu_device> m_audiocpu; // sound 68000
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optional_device<dsbz80_device> m_dsbz80; // Digital Sound Board
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struct view *m_view;
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struct point *m_pointdb;
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@ -1198,6 +1198,7 @@ $(MAMEOBJ)/sega.a: \
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$(DRIVERS)/megaplay.o \
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$(DRIVERS)/megatech.o \
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$(DRIVERS)/model1.o $(MACHINE)/model1.o $(VIDEO)/model1.o \
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$(AUDIO)/dsbz80.o \
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$(DRIVERS)/model2.o $(VIDEO)/model2.o \
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$(DRIVERS)/model3.o $(VIDEO)/model3.o $(MACHINE)/model3.o \
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$(DRIVERS)/naomi.o $(MACHINE)/dc.o $(VIDEO)/dc.o $(MACHINE)/naomi.o \
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@ -2174,6 +2175,9 @@ $(MACHINE)/nes_mmc.o: $(MAMESRC)/machine/nes_ines.c \
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$(MAMESRC)/machine/nes_unif.c
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$(VIDEO)/jaguar.o: $(MAMESRC)/video/jagobj.c \
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$(MAMESRC)/video/jagblit.c
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$(DRIVERS)/model1.o: $(MAMESRC)/includes/model1.h $(MAMESRC)/audio/dsbz80.h
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$(VIDEO)/model1.o: $(MAMESRC)/includes/model1.h $(MAMESRC)/audio/dsbz80.h
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$(MACHINE)/model1.o: $(MAMESRC)/includes/model1.h $(MAMESRC)/audio/dsbz80.h
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$(VIDEO)/model2.o: $(MAMESRC)/video/model2rd.c
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$(VIDEO)/model3.o: $(MAMESRC)/video/m3raster.c
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$(VIDEO)/n64.o: $(MAMESRC)/video/rdpfiltr.c
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