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https://github.com/holub/mame
synced 2025-04-23 00:39:36 +03:00
Part I of refactoring, nw
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angelosa
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@ -1,6 +1,6 @@
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/***************************************************************************
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L7A1045 L6028 DSP-A
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L7A1045 L6028 DSP-A
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(QFP120 package)
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this is the audio chip used on the following
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@ -44,7 +44,7 @@
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7 ---------------- ---------------- llllllllrrrrrrrr left/right volume
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8 ---------------- ---------------- ---------------- (read only?)
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8 ---------------- ---------------- ---------------- (read only?)
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9 ---------------- ---------------- ---------------- (read only?)
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@ -149,7 +149,7 @@ void l7a1045_sound_device::sound_stream_update(sound_stream &stream, stream_samp
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if ((start + pos) >= end)
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{
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m_key &= ~(1 << i);
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}
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sample = (INT8)m_rom[(start + pos) & (m_rom_size-1)];
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@ -168,16 +168,12 @@ void l7a1045_sound_device::sound_stream_update(sound_stream &stream, stream_samp
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WRITE16_MEMBER( l7a1045_sound_device::l7a1045_sound_w )
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{
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m_stream->update();
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switch (offset)
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{
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case 0x00:l7a1045_sound_select_w(space, offset, data, mem_mask); break;
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case 0x01:l7a1045_sound_data_02_w(space, offset, data, mem_mask); break;
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case 0x02:l7a1045_sound_data_04_w(space, offset, data, mem_mask); break;
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case 0x03:l7a1045_sound_data_06_w(space, offset, data, mem_mask); break;
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}
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m_stream->update(); // TODO
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if(offset == 0)
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sound_select_w(space, offset, data, mem_mask);
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else
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sound_data_w(space,offset - 1,data,mem_mask);
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}
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@ -199,7 +195,7 @@ READ16_MEMBER( l7a1045_sound_device::l7a1045_sound_r )
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}
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WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_select_w)
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WRITE16_MEMBER(l7a1045_sound_device::sound_select_w)
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{
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// I'm guessing these addresses are the sound chip / DSP?
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@ -222,130 +218,37 @@ WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_select_w)
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}
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WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_data_02_w) // upper? word of various registers?
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WRITE16_MEMBER(l7a1045_sound_device::sound_data_w)
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{
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m_audiodat[m_audioregister][m_audiochannel].dat[2] = data;
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// if(m_audioregister == 0)
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// printf("%04x %04x (%04x|%04x %04x)\n",offset,data,offset ^ 2,m_audioregister,m_audiochannel);
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// write with registers 00, 01, 04, 06, 05, 03, 07, 02 on startup
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// groups writes of register 0a per channel
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m_audiodat[m_audioregister][m_audiochannel].dat[offset] = data;
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if(offset == 0)
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{
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// register 08 / 09 not written?
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switch (m_audioregister)
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{
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default:
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case 0x08:
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case 0x09:
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printf("%08x: unexpected write port 0x0002 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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// case 0x00:
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case 0x01:
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case 0x04:
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case 0x06:
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case 0x05:
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case 0x03:
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case 0x02:
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case 0x07:
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case 0x0a:
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// printf("%08x: write port 0x0002 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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case 0x00:
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// hack
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l7a1045_voice *vptr = &m_voice[m_audiochannel];
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l7a1045_voice *vptr = &m_voice[m_audiochannel];
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m_key |= 1 << m_audiochannel;
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vptr->frac = 0;
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vptr->pos = 0;
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vptr->start = (m_audiodat[0][m_audiochannel].dat[0] & 0x000f) << (16 + 4);
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vptr->start |= (m_audiodat[0][m_audiochannel].dat[1] & 0xffff) << (4);
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vptr->start |= (m_audiodat[0][m_audiochannel].dat[2] & 0xf000) >> (12);
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vptr->start = (m_audiodat[0][m_audiochannel].dat[2] & 0x000f) << (16 + 4);
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vptr->start |= (m_audiodat[0][m_audiochannel].dat[1] & 0xffff) << (4);
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vptr->start |= (m_audiodat[0][m_audiochannel].dat[0] & 0xf000) >> (12);
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vptr->start &= m_rom_size - 1;
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//printf("%08x: REGISTER 00 write port 0x0002 chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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}
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}
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WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_data_04_w) // lower? word of various registers?
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{
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m_audiodat[m_audioregister][m_audiochannel].dat[1] = data;
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// write with registers 00, 04, 06, 05, 03, 07, 02, 01 on startup
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// groups writes of register 0a per channel
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// register 08 / 09 not written?
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switch (m_audioregister)
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{
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default:
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case 0x08:
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case 0x09:
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printf("%08x: unexpected write port 0x0004 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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// case 0x00:
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case 0x04:
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case 0x06:
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case 0x05:
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case 0x03:
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case 0x07:
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case 0x01:
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case 0x02:
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case 0x0a:
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//printf("%08x: write port 0x0004 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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case 0x00:
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//printf("%08x: REGISTER 00 write port 0x0004 chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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}
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}
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WRITE16_MEMBER(l7a1045_sound_device::l7a1045_sound_data_06_w) // other part? of various registers.. less used than 02/04, maybe flags?
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{
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// 00 / 01 written at startup
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// nothing else used?
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m_audiodat[m_audioregister][m_audiochannel].dat[0] = data;
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switch (m_audioregister)
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{
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default:
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case 0x02:
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case 0x03:
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case 0x04:
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case 0x05:
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case 0x06:
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case 0x07:
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case 0x08:
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case 0x09:
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case 0x0a:
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printf("%08x: unexpected write port 0x0006 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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// case 0x00:
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case 0x01:
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//printf("%08x: unexpected write port 0x0006 register %02x chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audioregister, m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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case 0x00:
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// it writes 2 values here for each sample
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// the 2nd one seems to contain the upper 4 bits of the sample address
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// so why does it write different data first?
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//printf("%08x: REGISTER 00 write port 0x0006 chansel %02x data %04x (%04x%04x%04x)\n", space.device().safe_pc(), m_audiochannel, data, m_audiodat[m_audioregister][m_audiochannel].dat[0], m_audiodat[m_audioregister][m_audiochannel].dat[1], m_audiodat[m_audioregister][m_audiochannel].dat[2]);
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break;
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}
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}
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@ -15,7 +15,7 @@ struct l7a1045_voice
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UINT32 start;
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UINT32 pos;
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UINT32 frac;
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};
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// ======================> l7a1045_sound_device
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@ -55,10 +55,8 @@ private:
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l7a1045_48bit_data m_audiodat[0x10][0x20];
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DECLARE_WRITE16_MEMBER(l7a1045_sound_select_w);
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DECLARE_WRITE16_MEMBER(l7a1045_sound_data_02_w);
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DECLARE_WRITE16_MEMBER(l7a1045_sound_data_04_w);
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DECLARE_WRITE16_MEMBER(l7a1045_sound_data_06_w);
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DECLARE_WRITE16_MEMBER(sound_select_w);
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DECLARE_WRITE16_MEMBER(sound_data_w);
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DECLARE_READ16_MEMBER(l7a1045_sound_port_0004_r);
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DECLARE_READ16_MEMBER(l7a1045_sound_port_0006_r);
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