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-rw-r--r--src/nukedopl3.c150
1 files changed, 75 insertions, 75 deletions
diff --git a/src/nukedopl3.c b/src/nukedopl3.c
index 1cf2745..3557df9 100644
--- a/src/nukedopl3.c
+++ b/src/nukedopl3.c
@@ -1,28 +1,28 @@
-//
-// Copyright (C) 2013-2016 Alexey Khokholov (Nuke.YKT)
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License
-// as published by the Free Software Foundation; either version 2
-// of the License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-//
-// Nuked OPL3 emulator.
-// Thanks:
-// MAME Development Team(Jarek Burczynski, Tatsuyuki Satoh):
-// Feedback and Rhythm part calculation information.
-// forums.submarine.org.uk(carbon14, opl3):
-// Tremolo and phase generator calculation information.
-// OPLx decapsulated(Matthew Gambrell, Olli Niemitalo):
-// OPL2 ROMs.
-//
-// version: 1.7.4
-//
+/*
+ * Copyright (C) 2013-2016 Alexey Khokholov (Nuke.YKT)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ *
+ * Nuked OPL3 emulator.
+ * Thanks:
+ * MAME Development Team(Jarek Burczynski, Tatsuyuki Satoh):
+ * Feedback and Rhythm part calculation information.
+ * forums.submarine.org.uk(carbon14, opl3):
+ * Tremolo and phase generator calculation information.
+ * OPLx decapsulated(Matthew Gambrell, Olli Niemitalo):
+ * OPL2 ROMs.
+ *
+ * version: 1.7.4
+ */
#include <stdio.h>
#include <stdlib.h>
@@ -31,13 +31,13 @@
#define RSM_FRAC 10
-#ifdef __GNUC__
+#if defined(__GNUC__) && __USE_ISOC99
#define INLINE __attribute__((always_inline)) inline
#else
#define INLINE
#endif
-// Channel types
+/* Channel types */
enum {
ch_2op = 0,
ch_4op = 1,
@@ -45,16 +45,16 @@ enum {
ch_drum = 3
};
-// Envelope key types
+/* Envelope key types */
enum {
egk_norm = 0x01,
egk_drum = 0x02
};
-//
-// logsin table
-//
+/* */
+/* logsin table */
+/* */
static const Bit16u logsinrom[256] = {
0x859, 0x6c3, 0x607, 0x58b, 0x52e, 0x4e4, 0x4a6, 0x471,
@@ -91,9 +91,9 @@ static const Bit16u logsinrom[256] = {
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000
};
-//
-// exp table
-//
+/* */
+/* exp table */
+/* */
static const Bit16u exprom[256] = {
0x000, 0x003, 0x006, 0x008, 0x00b, 0x00e, 0x011, 0x014,
@@ -130,19 +130,19 @@ static const Bit16u exprom[256] = {
0x3d4, 0x3da, 0x3df, 0x3e4, 0x3ea, 0x3ef, 0x3f5, 0x3fa
};
-//
-// freq mult table multiplied by 2
-//
-// 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 12, 12, 15, 15
-//
+/* */
+/* freq mult table multiplied by 2 */
+/* */
+/* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 12, 12, 15, 15 */
+/* */
static const Bit8u mt[16] = {
1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 20, 24, 24, 30, 30
};
-//
-// ksl table
-//
+/* */
+/* ksl table */
+/* */
static const Bit8u kslrom[16] = {
0, 32, 40, 45, 48, 51, 53, 55, 56, 58, 59, 60, 61, 62, 63, 64
@@ -152,9 +152,9 @@ static const Bit8u kslshift[4] = {
8, 1, 2, 0
};
-//
-// envelope generator constants
-//
+/* */
+/* envelope generator constants */
+/* */
static const Bit8u eg_incstep[3][4][8] = {
{
@@ -185,9 +185,9 @@ static const Bit8s eg_incsh[16] = {
0, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, -1, -2
};
-//
-// address decoding
-//
+/* */
+/* address decoding */
+/* */
static const Bit8s ad_slot[0x20] = {
0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, 9, 10, 11, -1, -1,
@@ -198,9 +198,9 @@ static const Bit8u ch_slot[18] = {
0, 1, 2, 6, 7, 8, 12, 13, 14, 18, 19, 20, 24, 25, 26, 30, 31, 32
};
-//
-// Envelope generator
-//
+/* */
+/* Envelope generator */
+/* */
typedef Bit16s(*envelope_sinfunc)(Bit16u phase, Bit16u envelope);
typedef void(*envelope_genfunc)(opl3_slot *slott);
@@ -545,9 +545,9 @@ static INLINE void OPL3_EnvelopeKeyOff(opl3_slot *slot, Bit8u type)
}
}
-//
-// Phase Generator
-//
+/* */
+/* Phase Generator */
+/* */
static INLINE void OPL3_PhaseGenerate(opl3_slot *slot)
{
@@ -583,9 +583,9 @@ static INLINE void OPL3_PhaseGenerate(opl3_slot *slot)
slot->pg_phase += (basefreq * mt[slot->reg_mult]) >> 1;
}
-//
-// Noise Generator
-//
+/* */
+/* Noise Generator */
+/* */
static INLINE void OPL3_NoiseGenerate(opl3_chip *chip)
{
@@ -596,9 +596,9 @@ static INLINE void OPL3_NoiseGenerate(opl3_chip *chip)
chip->noise >>= 1;
}
-//
-// Slot
-//
+/* */
+/* Slot */
+/* */
static INLINE void OPL3_SlotWrite20(opl3_slot *slot, Bit8u data)
{
@@ -694,11 +694,11 @@ static INLINE void OPL3_SlotCalcFB(opl3_slot *slot)
slot->prout = slot->out;
}
-//
-// Channel
-//
+/* */
+/* Channel */
+/* */
-//static void OPL3_ChannelSetupAlg(opl3_channel *channel);
+/* static void OPL3_ChannelSetupAlg(opl3_channel *channel); */
static INLINE void OPL3_ChannelSetupAlg(opl3_channel *channel)
{
if (channel->chtype == ch_drum)
@@ -824,7 +824,7 @@ static INLINE void OPL3_ChannelUpdateRhythm(opl3_chip *chip, Bit8u data)
chip->channel[chnum].chtype = ch_drum;
}
OPL3_ChannelSetupAlg(channel6);
- //hh
+ /* hh */
if (chip->rhy & 0x01)
{
OPL3_EnvelopeKeyOn(channel7->chipslots[0], egk_drum);
@@ -833,7 +833,7 @@ static INLINE void OPL3_ChannelUpdateRhythm(opl3_chip *chip, Bit8u data)
{
OPL3_EnvelopeKeyOff(channel7->chipslots[0], egk_drum);
}
- //tc
+ /* tc */
if (chip->rhy & 0x02)
{
OPL3_EnvelopeKeyOn(channel8->chipslots[1], egk_drum);
@@ -842,7 +842,7 @@ static INLINE void OPL3_ChannelUpdateRhythm(opl3_chip *chip, Bit8u data)
{
OPL3_EnvelopeKeyOff(channel8->chipslots[1], egk_drum);
}
- //tom
+ /* tom */
if (chip->rhy & 0x04)
{
OPL3_EnvelopeKeyOn(channel8->chipslots[0], egk_drum);
@@ -851,7 +851,7 @@ static INLINE void OPL3_ChannelUpdateRhythm(opl3_chip *chip, Bit8u data)
{
OPL3_EnvelopeKeyOff(channel8->chipslots[0], egk_drum);
}
- //sd
+ /* sd */
if (chip->rhy & 0x08)
{
OPL3_EnvelopeKeyOn(channel7->chipslots[1], egk_drum);
@@ -860,7 +860,7 @@ static INLINE void OPL3_ChannelUpdateRhythm(opl3_chip *chip, Bit8u data)
{
OPL3_EnvelopeKeyOff(channel7->chipslots[1], egk_drum);
}
- //bd
+ /* bd */
if (chip->rhy & 0x10)
{
OPL3_EnvelopeKeyOn(channel6->chipslots[0], egk_drum);
@@ -1079,14 +1079,14 @@ static INLINE void OPL3_GenerateRhythm1(opl3_chip *chip)
phase14 = (channel7->chipslots[0]->pg_phase >> 9) & 0x3ff;
phase17 = (channel8->chipslots[1]->pg_phase >> 9) & 0x3ff;
phase = 0x00;
- //hh tc phase bit
+ /* hh tc phase bit */
phasebit = ((phase14 & 0x08) | (((phase14 >> 5) ^ phase14) & 0x04)
| (((phase17 >> 2) ^ phase17) & 0x08)) ? 0x01 : 0x00;
- //hh
+ /* hh */
phase = (phasebit << 9)
| (0x34 << ((phasebit ^ (chip->noise & 0x01)) << 1));
OPL3_SlotGeneratePhase(channel7->chipslots[0], phase);
- //tt
+ /* tt */
OPL3_SlotGenerateZM(channel8->chipslots[0]);
}
@@ -1107,13 +1107,13 @@ static INLINE void OPL3_GenerateRhythm2(opl3_chip *chip)
phase14 = (channel7->chipslots[0]->pg_phase >> 9) & 0x3ff;
phase17 = (channel8->chipslots[1]->pg_phase >> 9) & 0x3ff;
phase = 0x00;
- //hh tc phase bit
+ /* hh tc phase bit */
phasebit = ((phase14 & 0x08) | (((phase14 >> 5) ^ phase14) & 0x04)
| (((phase17 >> 2) ^ phase17) & 0x08)) ? 0x01 : 0x00;
- //sd
+ /* sd */
phase = (0x100 << ((phase14 >> 8) & 0x01)) ^ ((chip->noise & 0x01) << 8);
OPL3_SlotGeneratePhase(channel7->chipslots[1], phase);
- //tc
+ /* tc */
phase = 0x100 | (phasebit << 9);
OPL3_SlotGeneratePhase(channel8->chipslots[1], phase);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-03 07:52:29 +0000