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[Core/Sound] updated Nuked OPN2 core to latest version (1.0.12)

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This commit is contained in:
ekeeke 2023-11-10 14:41:10 +01:00
parent 8e02a430aa
commit a42843bf6c
3 changed files with 55 additions and 66 deletions
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22
LICENSE.txt
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@ -3,7 +3,7 @@ Unless otherwise explicitly stated, all code in Genesis Plus GX is released
under the following license: under the following license:
Copyright (c) 1998-2003 Charles MacDonald Copyright (c) 1998-2003 Charles MacDonald
Copyright (c) 2007-2017 Eke-Eke Copyright (c) 2007-2023 Eke-Eke
Some portions copyright Nicola Salmoria and the MAME team Some portions copyright Nicola Salmoria and the MAME team
All rights reserved. All rights reserved.
@ -37,6 +37,26 @@ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE. POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------------------------
Nuked OPN2 core is distributed under the following license:
/*
* Copyright (C) 2017-2022 Alexey Khokholov (Nuke.YKT)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
---------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------

58
core/sound/ym3438.c
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@ -1,37 +1,22 @@
#ifdef HAVE_YM3438_CORE #ifdef HAVE_YM3438_CORE
/* /*
* Copyright (C) 2017-2018 Alexey Khokholov (Nuke.YKT) * Copyright (C) 2017-2022 Alexey Khokholov (Nuke.YKT)
* *
* Redistribution and use of this code or any derivative works are permitted * This file is part of Nuked OPN2.
* provided that the following conditions are met:
* *
* - Redistributions may not be sold, nor may they be used in a commercial * This library is free software; you can redistribute it and/or
* product or activity. * modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* *
* - Redistributions that are modified from the original source must include the * This library is distributed in the hope that it will be useful,
* complete source code, including the source code for all components used by a * but WITHOUT ANY WARRANTY; without even the implied warranty of
* binary built from the modified sources. However, as a special exception, the * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* source code distributed need not include anything that is normally distributed * Lesser General Public License for more details.
* (in either source or binary form) with the major components (compiler, kernel,
* and so on) of the operating system on which the executable runs, unless that
* component itself accompanies the executable.
*
* - Redistributions must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* *
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* *
* Nuked OPN2(Yamaha YM3438) emulator. * Nuked OPN2(Yamaha YM3438) emulator.
* Thanks: * Thanks:
@ -40,12 +25,14 @@
* OPLx decapsulated(Matthew Gambrell, Olli Niemitalo): * OPLx decapsulated(Matthew Gambrell, Olli Niemitalo):
* OPL2 ROMs. * OPL2 ROMs.
* *
* version: 1.0.10 * version: 1.0.12
*/ */
#include <string.h> #include <string.h>
#include "ym3438.h" #include "ym3438.h"
#define SIGN_EXTEND(bit_index, value) (((value) & ((1u << (bit_index)) - 1u)) - ((value) & (1u << (bit_index))))
enum { enum {
eg_num_attack = 0, eg_num_attack = 0,
eg_num_decay = 1, eg_num_decay = 1,
@ -563,7 +550,6 @@ static void OPN2_EnvelopeSSGEG(ym3438_t *chip)
chip->eg_ssg_pgrst_latch[slot] = 0; chip->eg_ssg_pgrst_latch[slot] = 0;
chip->eg_ssg_repeat_latch[slot] = 0; chip->eg_ssg_repeat_latch[slot] = 0;
chip->eg_ssg_hold_up_latch[slot] = 0; chip->eg_ssg_hold_up_latch[slot] = 0;
chip->eg_ssg_inv[slot] = 0;
if (chip->ssg_eg[slot] & 0x08) if (chip->ssg_eg[slot] & 0x08)
{ {
direction = chip->eg_ssg_dir[slot]; direction = chip->eg_ssg_dir[slot];
@ -596,11 +582,11 @@ static void OPN2_EnvelopeSSGEG(ym3438_t *chip)
chip->eg_ssg_hold_up_latch[slot] = 1; chip->eg_ssg_hold_up_latch[slot] = 1;
} }
direction &= chip->eg_kon[slot]; direction &= chip->eg_kon[slot];
chip->eg_ssg_inv[slot] = (chip->eg_ssg_dir[slot] ^ ((chip->ssg_eg[slot] >> 2) & 0x01))
& chip->eg_kon[slot];
} }
chip->eg_ssg_dir[slot] = direction; chip->eg_ssg_dir[slot] = direction;
chip->eg_ssg_enable[slot] = (chip->ssg_eg[slot] >> 3) & 0x01; chip->eg_ssg_enable[slot] = (chip->ssg_eg[slot] >> 3) & 0x01;
chip->eg_ssg_inv[slot] = (chip->eg_ssg_dir[slot] ^ (((chip->ssg_eg[slot] >> 2) & 0x01) & ((chip->ssg_eg[slot] >> 3) & 0x01)))
& chip->eg_kon[slot];
} }
static void OPN2_EnvelopeADSR(ym3438_t *chip) static void OPN2_EnvelopeADSR(ym3438_t *chip)
@ -676,7 +662,7 @@ static void OPN2_EnvelopeADSR(ym3438_t *chip)
} }
break; break;
case eg_num_decay: case eg_num_decay:
if ((level >> 5) == chip->eg_sl[1]) if ((level >> 4) == (chip->eg_sl[1] << 1))
{ {
nextstate = eg_num_sustain; nextstate = eg_num_sustain;
} }
@ -988,8 +974,7 @@ static void OPN2_ChOutput(ym3438_t *chip)
if (((cycles >> 2) == 1 && chip->dacen) || test_dac) if (((cycles >> 2) == 1 && chip->dacen) || test_dac)
{ {
out = (Bit16s)chip->dacdata; out = (Bit16s)chip->dacdata;
out <<= 7; out = SIGN_EXTEND(8, out);
out >>= 7;
} }
else else
{ {
@ -1075,8 +1060,7 @@ static void OPN2_FMGenerate(ym3438_t *chip)
{ {
output = output ^ (chip->mode_test_21[4] << 13); output = output ^ (chip->mode_test_21[4] << 13);
} }
output <<= 2; output = SIGN_EXTEND(13, output);
output >>= 2;
chip->fm_out[slot] = output; chip->fm_out[slot] = output;
} }

41
core/sound/ym3438.h
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@ -1,36 +1,21 @@
/* /*
* Copyright (C) 2017-2018 Alexey Khokholov (Nuke.YKT) * Copyright (C) 2017-2021 Alexey Khokholov (Nuke.YKT)
* *
* Redistribution and use of this code or any derivative works are permitted * This file is part of Nuked OPN2.
* provided that the following conditions are met:
* *
* - Redistributions may not be sold, nor may they be used in a commercial * This library is free software; you can redistribute it and/or
* product or activity. * modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* *
* - Redistributions that are modified from the original source must include the * This library is distributed in the hope that it will be useful,
* complete source code, including the source code for all components used by a * but WITHOUT ANY WARRANTY; without even the implied warranty of
* binary built from the modified sources. However, as a special exception, the * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* source code distributed need not include anything that is normally distributed * Lesser General Public License for more details.
* (in either source or binary form) with the major components (compiler, kernel,
* and so on) of the operating system on which the executable runs, unless that
* component itself accompanies the executable.
*
* - Redistributions must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* *
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* *
* Nuked OPN2(Yamaha YM3438) emulator. * Nuked OPN2(Yamaha YM3438) emulator.
* Thanks: * Thanks: