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Text File  |  1998-06-10  |  4KB  |  106 lines
  1. /* TMS5220 ROM Tables */
  2.  
  3. /* This is the energy lookup table (4-bits -> 10-bits) */
  4.  
  5. const unsigned short energytable[0x10]={
  6. 0x0000,0x00C0,0x0140,0x01C0,0x0280,0x0380,0x0500,0x0740,
  7. 0x0A00,0x0E40,0x1440,0x1C80,0x2840,0x38C0,0x5040,0x7FC0};
  8.  
  9. /* This is the pitch lookup table (6-bits -> 8-bits) */
  10.  
  11. const unsigned short pitchtable [0x40]={
  12. 0x0000,0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,
  13. 0x1700,0x1800,0x1900,0x1A00,0x1B00,0x1C00,0x1D00,0x1E00,
  14. 0x1F00,0x2000,0x2100,0x2200,0x2300,0x2400,0x2500,0x2600,
  15. 0x2700,0x2800,0x2900,0x2A00,0x2B00,0x2D00,0x2F00,0x3100,
  16. 0x3300,0x3500,0x3600,0x3900,0x3B00,0x3D00,0x3F00,0x4200,
  17. 0x4500,0x4700,0x4900,0x4D00,0x4F00,0x5100,0x5500,0x5700,
  18. 0x5C00,0x5F00,0x6300,0x6600,0x6A00,0x6E00,0x7300,0x7700,
  19. 0x7B00,0x8000,0x8500,0x8A00,0x8F00,0x9500,0x9A00,0xA000};
  20.  
  21. /* These are the reflection coefficient lookup tables */
  22.  
  23. /* K1 is (5-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  24.  
  25. const short k1table    [0x20]={
  26. (short)0x82C0,(short)0x8380,(short)0x83C0,(short)0x8440,(short)0x84C0,(short)0x8540,(short)0x8600,(short)0x8780,
  27. (short)0x8880,(short)0x8980,(short)0x8AC0,(short)0x8C00,(short)0x8D40,(short)0x8F00,(short)0x90C0,(short)0x92C0,
  28. (short)0x9900,(short)0xA140,(short)0xAB80,(short)0xB840,(short)0xC740,(short)0xD8C0,(short)0xEBC0,0x0000,
  29. 0x1440,0x2740,0x38C0,0x47C0,0x5480,0x5EC0,0x6700,0x6D40};
  30.  
  31. /* K2 is (5-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  32.  
  33. const short k2table    [0x20]={
  34. (short)0xAE00,(short)0xB480,(short)0xBB80,(short)0xC340,(short)0xCB80,(short)0xD440,(short)0xDDC0,(short)0xE780,
  35. (short)0xF180,(short)0xFBC0,0x0600,0x1040,0x1A40,0x2400,0x2D40,0x3600,
  36. 0x3E40,0x45C0,0x4CC0,0x5300,0x5880,0x5DC0,0x6240,0x6640,
  37. 0x69C0,0x6CC0,0x6F80,0x71C0,0x73C0,0x7580,0x7700,0x7E80};
  38.  
  39. /* K3 is (4-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  40.  
  41. const short k3table    [0x10]={
  42. (short)0x9200,(short)0x9F00,(short)0xAD00,(short)0xBA00,(short)0xC800,(short)0xD500,(short)0xE300,(short)0xF000,
  43. (short)0xFE00,0x0B00,0x1900,0x2600,0x3400,0x4100,0x4F00,0x5C00};
  44.  
  45. /* K4 is (4-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  46.  
  47. const short k4table    [0x10]={
  48. (short)0xAE00,(short)0xBC00,(short)0xCA00,(short)0xD800,(short)0xE600,(short)0xF400,0x0100,0x0F00,
  49. 0x1D00,0x2B00,0x3900,0x4700,0x5500,0x6300,0x7100,0x7E00};
  50.  
  51. /* K5 is (4-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  52.  
  53. const short k5table    [0x10]={
  54. (short)0xAE00,(short)0xBA00,(short)0xC500,(short)0xD100,(short)0xDD00,(short)0xE800,(short)0xF400,(short)0xFF00,
  55. 0x0B00,0x1700,0x2200,0x2E00,0x3900,0x4500,0x5100,0x5C00};
  56.  
  57. /* K6 is (4-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  58.  
  59. const short k6table    [0x10]={
  60. (short)0xC000,(short)0xCB00,(short)0xD600,(short)0xE100,(short)0xEC00,(short)0xF700,0x0300,0x0E00,
  61. 0x1900,0x2400,0x2F00,0x3A00,0x4500,0x5000,0x5B00,0x6600};
  62.  
  63. /* K7 is (4-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  64.  
  65. const short k7table    [0x10]={
  66. (short)0xB300,(short)0xBF00,(short)0xCB00,(short)0xD700,(short)0xE300,(short)0xEF00,(short)0xFB00,0x0700,
  67. 0x1300,0x1F00,0x2B00,0x3700,0x4300,0x4F00,0x5A00,0x6600};
  68.  
  69. /* K8 is (3-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  70.  
  71. const short k8table    [0x08]={
  72. (short)0xC000,(short)0xD800,(short)0xF000,0x0700,0x1F00,0x3700,0x4F00,0x6600};
  73.  
  74. /* K9 is (3-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  75.  
  76. const short k9table    [0x08]={
  77. (short)0xC000,(short)0xD400,(short)0xE800,(short)0xFC00,0x1000,0x2500,0x3900,0x4D00};
  78.  
  79. /* K10 is (3-bits -> 9 bits+sign, 2's comp. fractional (-1 < x < 1) */
  80.  
  81. const short k10table   [0x08]={
  82. (short)0xCD00,(short)0xDF00,(short)0xF100,0x0400,0x1600,0x2000,0x3B00,0x4D00};
  83.  
  84. /* chirp table */
  85.  
  86. static char chirptable[41]={
  87. 0x00, 0x2a, (char)0xd4, 0x32,
  88. (char)0xb2, 0x12, 0x25, 0x14,
  89. 0x02, (char)0xe1, (char)0xc5, 0x02,
  90. 0x5f, 0x5a, 0x05, 0x0f,
  91. 0x26, (char)0xfc, (char)0xa5, (char)0xa5,
  92. (char)0xd6, (char)0xdd, (char)0xdc, (char)0xfc,
  93. 0x25, 0x2b, 0x22, 0x21,
  94. 0x0f, (char)0xff, (char)0xf8, (char)0xee,
  95. (char)0xed, (char)0xef, (char)0xf7, (char)0xf6,
  96. (char)0xfa, 0x00, 0x03, 0x02,
  97. 0x01
  98. };
  99.  
  100. /* interpolation coefficients */
  101.  
  102. static char interp_coeff[8] = {
  103. 8, 8, 8, 4, 4, 2, 2, 1
  104. };
  105.  
  106.