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speculative notes (nw)

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mamehaze 2015-03-12 16:20:35 +00:00
parent 2bc2c7416d
commit f354ad36e0
2 changed files with 79 additions and 3 deletions
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59
src/mame/audio/hng64.c
View File

@ -158,8 +158,67 @@ WRITE16_MEMBER(hng64_state::hng64_sound_port_0008_w)
}
WRITE16_MEMBER(hng64_state::hng64_sound_select_w)
{
// seems to write values in the format xxyy where yy is 0x00-0x1f and xx is oten 00/01/0a
// there are said to be 32 audio channels, so maybe the lower byte is the channel?
// printf("hng64_sound_select_w")
COMBINE_DATA(&m_audiochannel);
}
WRITE16_MEMBER(hng64_state::hng64_sound_data_02_w)
{
m_audiodat[m_audiochannel].dat[2] = data;
// printf("write port 0x0002 chansel %04x data %04x (%04x%04x%04x)\n", m_audiochannel, data, m_audiodat[m_audiochannel].dat[0], m_audiodat[m_audiochannel].dat[1], m_audiodat[m_audiochannel].dat[2]);
}
WRITE16_MEMBER(hng64_state::hng64_sound_data_04_w)
{
m_audiodat[m_audiochannel].dat[1] = data;
// printf("write port 0x0004 chansel %04x data %04x (%04x%04x%04x)\n", m_audiochannel, data, m_audiodat[m_audiochannel].dat[0], m_audiodat[m_audiochannel].dat[1], m_audiodat[m_audiochannel].dat[2]);
}
WRITE16_MEMBER(hng64_state::hng64_sound_data_06_w)
{
m_audiodat[m_audiochannel].dat[0] = data;
// printf("write port 0x0006 chansel %04x data %04x (%04x%04x%04x)\n", m_audiochannel, data, m_audiodat[m_audiochannel].dat[0], m_audiodat[m_audiochannel].dat[1], m_audiodat[m_audiochannel].dat[2]);
}
// but why not just use the V33/V53 XA mode??
WRITE16_MEMBER(hng64_state::hng64_sound_bank_w)
{
printf("%08x hng64_sound_bank_w? %02x %04x\n", space.device().safe_pc(), offset, data);
// buriki writes 0x3f to 0x200 before jumping to the low addresses..
// where it expects to find data from 0x1f0000
// the 2 early games don't do this.. maybe all banks actuallly default to that region tho?
// the sound code on those games seems buggier anyway.
}
WRITE16_MEMBER(hng64_state::hng64_sound_port_0102_w)
{
printf("hng64_port 0x0102 %04x\n", data);
}
WRITE16_MEMBER(hng64_state::hng64_sound_port_0080_w)
{
printf("hng64_port 0x0080 %04x\n", data);
}
static ADDRESS_MAP_START( hng_sound_io, AS_IO, 16, hng64_state )
AM_RANGE(0x0000, 0x0001) AM_WRITE( hng64_sound_select_w )
AM_RANGE(0x0002, 0x0003) AM_WRITE( hng64_sound_data_02_w )
AM_RANGE(0x0004, 0x0005) AM_WRITE( hng64_sound_data_04_w )
AM_RANGE(0x0006, 0x0007) AM_WRITE( hng64_sound_data_06_w )
AM_RANGE(0x0008, 0x0009) AM_WRITE( hng64_sound_port_0008_w )
// a 8 c used too?
AM_RANGE(0x0080, 0x0081) AM_WRITE( hng64_sound_port_0080_w )
AM_RANGE(0x0102, 0x0103) AM_WRITE( hng64_sound_port_0102_w )
AM_RANGE(0x0200, 0x021f) AM_WRITE( hng64_sound_bank_w ) // ??
ADDRESS_MAP_END
WRITE_LINE_MEMBER(hng64_state::dma_hreq_cb)

23
src/mame/includes/hng64.h
View File

@ -359,9 +359,26 @@ public:
DECLARE_WRITE_LINE_MEMBER(dma_hreq_cb);
DECLARE_READ8_MEMBER(dma_memr_cb);
DECLARE_WRITE8_MEMBER(dma_iow3_cb);
WRITE_LINE_MEMBER(tcu_tm0_cb);
WRITE_LINE_MEMBER(tcu_tm1_cb);
WRITE_LINE_MEMBER(tcu_tm2_cb);
DECLARE_WRITE_LINE_MEMBER(tcu_tm0_cb);
DECLARE_WRITE_LINE_MEMBER(tcu_tm1_cb);
DECLARE_WRITE_LINE_MEMBER(tcu_tm2_cb);
UINT16 m_audiochannel;
struct hng64_48bit_data {
UINT16 dat[3];
};
hng64_48bit_data m_audiodat[0x10000];
DECLARE_WRITE16_MEMBER(hng64_sound_select_w);
DECLARE_WRITE16_MEMBER(hng64_sound_data_02_w);
DECLARE_WRITE16_MEMBER(hng64_sound_data_04_w);
DECLARE_WRITE16_MEMBER(hng64_sound_data_06_w);
DECLARE_WRITE16_MEMBER(hng64_sound_bank_w);
DECLARE_WRITE16_MEMBER(hng64_sound_port_0102_w);
DECLARE_WRITE16_MEMBER(hng64_sound_port_0080_w);
};