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tms5110r.c: Corrected and verified TMS5100 LPC table against the decap. [digshadow, Lord Nightmare]

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This commit is contained in:
Jonathan Gevaryahu 2013-04-11 04:13:17 +00:00
parent cdb963649c
commit 3d0285d974
1 changed files with 16 additions and 20 deletions
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36
src/emu/sound/tms5110r.c
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@ -68,14 +68,9 @@ struct tms5100_coeffs
/*
The TMS5100NL was decapped and imaged by digshadow in April, 2013.
The LPC table is not yet verified from the decap (it comes from US Patent
4,209,836 and several others, and have been verified using derivative
analysis to show which values were bad (due to poor quality images or badly
typed copies of the tables in the patents, depending on which patent you look
at) which were then corrected by figuring out what the tiny remaining marks on
the photocopied version of the coefficient sheet COULD have been which would
make the derivatives play nice.
The chirp table from the decap is verified to match the patent and decap.
The LPC table is verified to match the decap.
It also matches the intended contents of US Patent 4,209,836 and several others.
The chirp table is verified to match the decap, and also matches the patents.
The TMS5100 (development name: TMC0280) and the Speak and spell's "CD2801" chip
are believed to be the same silicon. The 5100 may be the 'A' die revision of
the CD2801 based on die markings.
@ -88,45 +83,46 @@ static const struct tms5100_coeffs pat4209836_coeff =
4,
5,
{ 5, 5, 4, 4, 4, 4, 4, 3, 3, 3 },
/* E */
{ 0, 0, 1, 1, 2, 3, 5, 7, 10, 15, 21, 30, 43, 61, 86, 511 }, /* last value is actually 0 in ROM, but 511 is stop sentinel */
/* P note: value #20 may be 95; value #29 may be 140 */
/* E */
{ 0, 0, 1, 1, 2, 3, 5, 7,
10, 15, 21, 30, 43, 61, 86, COEFF_ENERGY_SENTINEL }, // last rom value is actually really 0, but the tms5110.c code still requires the sentinel value to function correctly, until it is properly updated or merged with tms5220.c
/* P */
{ 0, 41, 43, 45, 47, 49, 51, 53,
55, 58, 60, 63, 66, 70, 73, 76,
79, 83, 87, 90, 94, 99, 103, 107,
112, 118, 123, 129, 134, 141, 147, 153 },
112, 118, 123, 129, 134, 140, 147, 153 },
{
/* K1 */
{ -501, -497, -493, -488, -480, -471, -460, -446,
-427, -405, -378, -344, -305, -259, -206, -148,
-86, -21, 45, 110, 171, 227, 277, 320,
357, 388, 413, 434, 451, 464, 474, 482 },
357, 388, 413, 434, 451, 464, 474, 498 },
/* K2 */
{ -349, -328, -305, -280, -252, -223, -192, -158,
-124, -88, -51, -14, 23, 60, 97, 133,
167, 199, 230, 259, 286, 310, 333, 354,
372, 389, 404, 417, 429, 439, 449, 490 },
372, 389, 404, 417, 429, 439, 449, 506 },
/* K3 */
{ -397, -365, -327, -282, -229, -170, -104, -36,
35, 104, 169, 228, 281, 326, 364, 396 },
/* K4 */
{ -373, -334, -293, -245, -191, -131, -67, -1,
{ -369, -334, -293, -245, -191, -131, -67, -1,
64, 128, 188, 243, 291, 332, 367, 397 },
/* K5 */
{ -319, -286, -250, -211, -168, -122, -74, -25,
24, 73, 121, 167, 210, 249, 285, 319 },
24, 73, 121, 167, 210, 249, 285, 318 },
/* K6 */
{ -290, -252, -209, -163, -114, -62, -9, 44,
97, 147, 194, 239, 278, 313, 344, 371 },
97, 147, 194, 238, 278, 313, 344, 371 },
/* K7 */
{ -291, -256, -216, -174, -128, -80, -31, 19,
69, 117, 163, 206, 246, 283, 316, 345 },
/* K8 */
{ -219, -133, -38, 59, 152, 235, 305, 361 },
{ -218, -133, -38, 59, 152, 235, 305, 361 },
/* K9 */
{ -225, -157, -82, -3, 76, 151, 220, 280 },
{ -226, -157, -82, -3, 76, 151, 220, 280 },
/* K10 */
{ -179, -122, -61, 1, 63, 123, 179, 231 },
{ -179, -122, -61, 1, 62, 123, 179, 231 },
},
/* Chirp table */
{ 0, 42, -44, 50, -78, 18, 37, 20,