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r29179 Wednesday 2nd April, 2014 at 11:15:29 UTC by O. Galibert
namcos23: Better understanding of the command format, downhill and 500gp now show something (completely wrong) [O. Galibert]
[src/mame/drivers]namcos23.c

trunk/src/mame/drivers/namcos23.c
r29178r29179
16051605   return m_matrices[id];
16061606}
16071607
1608void namcos23_state::c435_matrix_matrix_mul() // 000.
1608void namcos23_state::c435_matrix_matrix_mul() // 0.0
16091609{
1610   if(m_c435_buffer[0] != 0x0004)
1610   if((m_c435_buffer[0] & 0xf) != 4)
16111611   {
16121612      logerror("WARNING: c435_matrix_matrix_mul with size %d\n", m_c435_buffer[0] & 0xf);
16131613      return;
r29178r29179
16301630   t[8] = INT16((m1[6]*m2[6] + m1[7]*m2[7] + m1[8]*m2[8]) >> 14);
16311631}
16321632
1633void namcos23_state::c435_matrix_set() // 004.
1633void namcos23_state::c435_matrix_vector_mul() // 0.1
16341634{
1635   if(m_c435_buffer[0] != 0x004a)
1635   if((m_c435_buffer[0] & 0xf) != 4)
16361636   {
1637      logerror("WARNING: c435_matrix_set with size %d\n", m_c435_buffer[0] & 0xf);
1638      return;
1639   }
1640   INT16 *t = c435_getm(m_c435_buffer[1]);
1641   for(int i=0; i<9; i++)
1642      t[i] = m_c435_buffer[i+2];
1643}
1644
1645void namcos23_state::c435_vector_set() // 005.
1646{
1647   if(m_c435_buffer[0] != 0x0057)
1648   {
1649      logerror("WARNING: c435_vector_set with size %d\n", m_c435_buffer[0] & 0xf);
1650      return;
1651   }
1652   INT32 *t = c435_getv(m_c435_buffer[1]);
1653   for(int i=0; i<3; i++)
1654      t[i] = u32_to_s24((m_c435_buffer[2*i+2] << 16) | m_c435_buffer[2*i+3]);
1655}
1656
1657void namcos23_state::c435_matrix_vector_mul() // 081.
1658{
1659   if(m_c435_buffer[0] != 0x0814)
1660   {
16611637      logerror("WARNING: c435_matrix_vector_mul with size %d\n", m_c435_buffer[0] & 0xf);
16621638      return;
16631639   }
r29178r29179
16731649   t[2] = INT32((m[6]*INT64(v[0]) + m[7]*INT64(v[1]) + m[8]*INT64(v[2])) >> 14);
16741650}
16751651
1676void namcos23_state::c435_vector_matrix_mul() // 101.
1652void namcos23_state::c435_matrix_set() // 0.4
16771653{
1678   if(m_c435_buffer[0] != 0x1014)
1654   if((m_c435_buffer[0] & 0xf) != 10)
16791655   {
1680      logerror("WARNING: c435_vector_matrix_mul with size %d\n", m_c435_buffer[0] & 0xf);
1656      logerror("WARNING: c435_matrix_set with size %d\n", m_c435_buffer[0] & 0xf);
16811657      return;
16821658   }
1683   if(m_c435_buffer[3] != 0xffff)
1684      logerror("WARNING: c435_vector_matrix_mul with [3]=%04x\n", m_c435_buffer[3]);
1659   INT16 *t = c435_getm(m_c435_buffer[1]);
1660   for(int i=0; i<9; i++)
1661      t[i] = m_c435_buffer[i+2];
1662}
16851663
1686   INT32 *t       = c435_getv(m_c435_buffer[1]);
1687   const INT16 *m = c435_getm(m_c435_buffer[2]);
1688   const INT32 *v = c435_getv(m_c435_buffer[4]);
1689
1690   t[0] = INT32((m[0]*INT64(v[0]) + m[1]*INT64(v[1]) + m[2]*INT64(v[2])) >> 14);
1691   t[1] = INT32((m[3]*INT64(v[0]) + m[4]*INT64(v[1]) + m[5]*INT64(v[2])) >> 14);
1692   t[2] = INT32((m[6]*INT64(v[0]) + m[7]*INT64(v[1]) + m[8]*INT64(v[2])) >> 14);
1664void namcos23_state::c435_vector_set() // 0.5
1665{
1666   if((m_c435_buffer[0] & 0xf) != 7)
1667   {
1668      logerror("WARNING: c435_vector_set with size %d\n", m_c435_buffer[0] & 0xf);
1669      return;
1670   }
1671   INT32 *t = c435_getv(m_c435_buffer[1]);
1672   for(int i=0; i<3; i++)
1673      t[i] = u32_to_s24((m_c435_buffer[2*i+2] << 16) | m_c435_buffer[2*i+3]);
16931674}
16941675
1695void namcos23_state::c435_scaling_set() // 44..
1676void namcos23_state::c435_scaling_set() // 4.4
16961677{
1697   if(m_c435_buffer[0] != 0x4401)
1678   if((m_c435_buffer[0] & 0xff) != 1)
16981679   {
16991680      logerror("WARNING: c435_scaling_set with size %d\n", m_c435_buffer[0] & 0xff);
17001681      return;
r29178r29179
17021683   m_scaling = m_c435_buffer[1];
17031684}
17041685
1705void namcos23_state::c435_state_set_interrupt() // 4f.. 0001
1686void namcos23_state::c435_state_set_interrupt() // 4.f.0001
17061687{
17071688   if(m_c435_buffer[0] != 0x4f02)
17081689   {
r29178r29179
17151696      update_main_interrupts(m_main_irqcause & ~MAIN_C435_IRQ);
17161697}
17171698
1718void namcos23_state::c435_state_set() // 4f..
1699void namcos23_state::c435_state_set() // 4.f
17191700{
1720   if(m_c435_buffer[0] == 0x4f00)
1701   if((m_c435_buffer[0] & 0xff) == 0)
17211702   {
17221703      logerror("WARNING: c435_state_set with size %d\n", m_c435_buffer[0] & 0xff);
17231704      return;
r29178r29179
17301711   }
17311712}
17321713
1733void namcos23_state::c435_render() // 800. 808.
1714void namcos23_state::c435_render() // 8
17341715{
1735   if(m_c435_buffer[0] != 0x8003 && m_c435_buffer[0] != 0x8043 && m_c435_buffer[0] != 0x8083)
1716   if((m_c435_buffer[0] & 0xf) != 3)
17361717   {
1737      logerror("WARNING: c435_render with header %04x\n", m_c435_buffer[0]);
1718      logerror("WARNING: c435_render with size %d, header %04x", m_c435_buffer[0] & 0xf, m_c435_buffer[0]);
17381719      return;
17391720   }
17401721
r29178r29179
17701751   render.count[render.cur]++;
17711752}
17721753
1773void namcos23_state::c435_flush() // c00.
1754void namcos23_state::c435_flush() // c
17741755{
1775   if(m_c435_buffer[0] != 0xc000)
1756   if((m_c435_buffer[0] & 0xf) != 0)
17761757   {
17771758      logerror("WARNING: c435_flush with size %d\n", m_c435_buffer[0] & 0xf);
17781759      return;
r29178r29179
17891770{
17901771   m_c435_buffer[m_c435_buffer_pos++] = data;
17911772   UINT16 h = m_c435_buffer[0];
1792   UINT16 h1;
17931773   int psize;
1794   if(h & 0x4000)
1795   {
1796      h1 = h & 0xff00;
1774   if((h & 0x4000) == 0x4000)
17971775      psize = h & 0xff;
1798   }
17991776   else
1800   {
1801      h1 = h & 0xfff0;
18021777      psize = h & 0xf;
1803   }
18041778   if(m_c435_buffer_pos < psize+1)
18051779      return;
18061780
1807   switch(h1)
1808   {
1809   case 0x0000: c435_matrix_matrix_mul(); break;
1810   case 0x0040: c435_matrix_set(); break;
1811   case 0x0050: c435_vector_set(); break;
1812   case 0x0810: c435_matrix_vector_mul(); break;
1813   case 0x1010: c435_vector_matrix_mul(); break;
1814   case 0x4400: c435_scaling_set(); break;
1815   case 0x4f00: c435_state_set(); break;
1816   case 0x8000: c435_render(); break;
1817   case 0x8040: c435_render(); break;
1818   case 0x8080: c435_render(); break;
1819   case 0xc000: c435_flush(); break;
1820   default:
1821      if(1)
1822      {
1823         logerror("c435 - [%04x]", h1);
1824         for(int i=0; i<m_c435_buffer_pos; i++)
1825            logerror(" %04x", m_c435_buffer[i]);
1826         logerror("\n");
1781   bool known = true;
1782   switch(h & 0xc000) {
1783   case 0x0000:
1784      switch(h & 0xf0) {
1785      case 0x00: c435_matrix_matrix_mul(); break;
1786      case 0x10: c435_matrix_vector_mul(); break;
1787      case 0x40: c435_matrix_set(); break;
1788      case 0x50: c435_vector_set(); break;
1789      default: known = false; break;
18271790      }
18281791      break;
1792
1793   case 0x4000:
1794      switch(h & 0xf00) {
1795      case 0x400: c435_scaling_set(); break;
1796      case 0xf00: c435_state_set(); break;
1797      default: known = false; break;
1798      }
1799      break;
1800
1801   case 0x8000: c435_render(); break;
1802   case 0xc000: c435_flush(); break;
18291803   }
1804
1805   if(!known) {
1806      logerror("c435 -");
1807      for(int i=0; i<m_c435_buffer_pos; i++)
1808         logerror(" %04x", m_c435_buffer[i]);
1809      logerror("\n");
1810   }
1811
18301812   m_c435_buffer_pos = 0;
18311813}
18321814

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