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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
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0. This License applies to any program or other work which contains
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This section is intended to make thoroughly clear what is believed to
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may add an explicit geographical distribution limitation excluding
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NO WARRANTY
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
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Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
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The hypothetical commands `show w' and `show c' should show the appropriate
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You should also get your employer (if you work as a programmer) or your
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

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# YM3812-LLE
Yamaha YM3812 (OPL2) emulator using YM3812 die shot.
Special thanks to Travis Goodspeed for decapping YM3812.
https://twitter.com/travisgoodspeed/status/1652334901230723072
# MODIFICATION DISCLAIMER
this is a modified version of YM3812-LLE which adds functions to allow its usage and per-chan osc.
the original Git commit is 7f0c6537ccd61e9e7dbddb4e4a353e007ea69c50.

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/*
* Copyright (C) 2023 nukeykt
*
* This file is part of YM3812-LLE.
*
* 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.
*
* YM3812 emulator
* Thanks:
* Travis Goodspeed:
* YM3812 decap and die shot
*
*/
#pragma once
typedef struct
{
int mclk;
int address;
int data_i;
int ic;
int cs;
int rd;
int wr;
} fmopl2_input_t;
typedef struct
{
fmopl2_input_t input;
int mclk1;
int mclk2;
int clk1;
int clk2;
int prescaler_reset_l[2];
int prescaler_cnt[2];
int prescaler_l1[2];
int prescaler_l2[2];
int reset1;
int fsm_reset_l[2];
int fsm_reset; // wire
int fsm_cnt1[2];
int fsm_cnt2[2];
int fsm_cnt1_of; // wire
int fsm_cnt2_of; // wire
int fsm_sel[13];
int fsm_cnt; // wire
int fsm_ch_out;
int fsm_do_fb;
int fsm_load_fb;
int fsm_l1[2];
int fsm_l2[2];
int fsm_l3[2];
int fsm_l4[2];
int fsm_l5[2];
int fsm_l6[2];
int fsm_out[16];
int io_rd;
int io_wr;
int io_cs;
int io_a0;
int io_read0;
int io_read1;
int io_write;
int io_write0;
int io_write1;
int io_dir;
int io_data;
int data_latch;
int write0;
int write0_sr;
int write0_latch[6];
int write1;
int write1_sr;
int write1_latch[6];
int reg_sel1;
int reg_sel2;
int reg_sel3;
int reg_sel4;
int reg_sel8;
int reg_selbd;
int reg_test;
int reg_timer1;
int reg_timer2;
int reg_notesel;
int reg_csm;
int reg_da;
int reg_dv;
int rhythm;
int reg_rh_kon;
int reg_sel4_wr; // wire
int reg_sel4_rst; // wire
int reg_t1_mask;
int reg_t2_mask;
int reg_t1_start;
int reg_t2_start;
int reg_mode_b3;
int reg_mode_b4;
int t1_cnt[2];
int t2_cnt[2];
int t1_of[2];
int t2_of[2];
int t1_status;
int t2_status;
int unk_status1;
int unk_status2;
int timer_st_load_l;
int timer_st_load;
int t1_start;
int t1_start_l[2];
int t2_start_l[2];
int t1_load; // wire
int csm_load_l;
int csm_load;
int csm_kon;
int rh_sel0;
int rh_sel[2];
int keyon_comb;
int address;
int address_valid;
int address_valid_l[2];
int address_valid2;
int data;
int slot_cnt1[2];
int slot_cnt2[2];
int slot_cnt;
int sel_ch;
int ch_fnum[10][2];
int ch_block[3][2];
int ch_keyon[2];
int ch_connect[2];
int ch_fb[3][2];
int op_multi[4][2];
int op_ksr[2];
int op_egt[2];
int op_vib[2];
int op_am[2];
int op_tl[6][2];
int op_ksl[2][2];
int op_ar[4][2];
int op_dr[4][2];
int op_sl[4][2];
int op_rr[4][2];
int op_wf[2][2];
int op_mod[2];
int op_value; // wire
int eg_load1_l;
int eg_load1;
int eg_load2_l;
int eg_load2;
int eg_load3_l;
int eg_load3;
int trem_carry[2];
int trem_value[2];
int trem_dir[2];
int trem_step;
int trem_out;
int trem_of[2];
int eg_timer[2];
int eg_timer_masked[2];
int eg_carry[2];
int eg_mask[2];
int eg_subcnt[2];
int eg_subcnt_l[2];
int eg_sync_l[2];
int eg_timer_low;
int eg_shift;
int eg_state[2][2];
int eg_level[9][2];
int eg_out[2];
int eg_dokon; // wire
int eg_mute[2];
int block;
int fnum;
int keyon;
int connect;
int connect_l[2];
int fb;
int fb_l[2][2];
int multi;
int ksr;
int egt;
int vib;
int am;
int tl;
int ksl;
int ar;
int dr;
int sl;
int rr;
int wf;
int lfo_cnt[2];
int t1_step; // wire
int t2_step; // wire
int am_step; // wire
int vib_step; // wire
int vib_cnt[2];
int pg_phase[19][2];
int dbg_serial[2];
int noise_lfsr[2];
int hh_load;
int tc_load;
int hh_bit2;
int hh_bit3;
int hh_bit7;
int hh_bit8;
int tc_bit3;
int tc_bit5;
int op_logsin[2];
int op_shift[2];
int op_pow[2];
int op_mute[2];
int op_sign[2];
int op_fb[2][13][2];
int pg_out; // wire
int pg_out_rhy; // wire
int accm_value[2];
int accm_shifter[2];
int accm_load1_l;
int accm_load1;
int accm_clamplow;
int accm_clamphigh;
int accm_top;
int accm_sel[2];
int accm_mo[2];
int o_sh;
int o_mo;
int o_irq_pull;
int o_sy;
int data_o;
int data_z;
int o_clk1;
int o_clk2;
int o_reset1;
int o_write0;
int o_write1;
int o_data_latch;
int op_value_debug;
} fmopl2_t;
// modification
void FMOPL2_Clock(fmopl2_t *chip);

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
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Also add information on how to contact you by electronic and paper mail.
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Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
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The hypothetical commands `show w' and `show c' should show the appropriate
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

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# YMF262-LLE
Yamaha YMF262 (OPL3) emulator using YMF262 die shot.
Special thanks to John McMaster for decapping YMF262.
https://siliconpr0n.org/map/yamaha/ymf262-m/
# MODIFICATION DISCLAIMER
this is a modified version of YMF262-LLE which adds functions to allow its usage and per-chan osc.
it also brings in a small optimization.
the original Git commit is 63406354d05bc860a6762377ddbb9e2609bd6c36.

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/*
* Copyright (C) 2023 nukeykt
*
* This file is part of YMF262-LLE.
*
* 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.
*
* YMF262 emulator
* Thanks:
* John McMaster (siliconpr0n.org):
* YMF262 decap and die shot
*
*/
#pragma once
#include <stdint.h>
typedef struct
{
int mclk;
int address;
int data_i;
int ic;
int cs;
int rd;
int wr;
} fmopl3_input_t;
typedef struct
{
fmopl3_input_t input;
int mclk1;
int mclk2;
int aclk1;
int aclk2;
int clk1;
int clk2;
int rclk1;
int rclk2;
int o_clk1;
int o_clk2;
int o_rclk1;
int o_rclk2;
int o_wrcheck;
int o_data_latch;
int o_bank_latch;
int o_reset0;
int o_ra_w1_l1;
int prescaler1_reset[2];
int prescaler1_cnt[2];
int prescaler2_reset_l[2];
int prescaler2_cnt[2];
int prescaler2_reset;
int prescaler2_l1[2];
int prescaler2_l2;
int prescaler2_l3[2];
int prescaler2_l4;
int prescaler2_l5[2];
int prescaler2_l6[2];
int prescaler2_l7;
int fsm_cnt1[2];
int fsm_cnt2[2];
int fsm_cnt3[2];
int fsm_cnt;
int fsm_reset_l[2];
int fsm_out[17];
int fsm_l1[2];
int fsm_l2[2];
int fsm_l3[2];
int fsm_l4[2];
int fsm_l5[2];
int fsm_l6[2];
int fsm_l7[2];
int fsm_l8[2];
int fsm_l9[2];
int fsm_l10[2];
int ic_latch[2];
int io_rd;
int io_wr;
int io_cs;
int io_a0;
int io_a1;
int io_read;
int io_write;
int io_write0;
int io_write1;
int io_bank;
int data_latch;
int bank_latch;
int bank_masked;
int reg_sel1;
int reg_sel2;
int reg_sel3;
int reg_sel4;
int reg_sel5;
int reg_sel8;
int reg_selbd;
int reg_test0;
int reg_timer1;
int reg_timer2;
int reg_notesel;
int rhythm;
int reg_rh_kon;
int reg_da;
int reg_dv;
int reg_test1;
int reg_new;
int reg_4op;
int reg_t1_mask;
int reg_t2_mask;
int reg_t1_start;
int reg_t2_start;
int lfo_cnt[2];
int vib_cnt[2];
int t1_step;
int t2_step;
int am_step;
int vib_step;
int rh_sel0;
int rh_sel[2];
int keyon_comb;
int ra_address_latch;
int ra_address_good;
int ra_data_latch;
int ra_cnt1[2];
int ra_cnt2[2];
int ra_cnt3[2];
int ra_cnt4[2];
int ra_cnt;
int ra_rst_l[2];
int ra_w1_l1;
int ra_w1_l2;
int ra_write;
int ra_write_a;
int ra_multi[36];
int ra_ksr[36];
int ra_egt[36];
int ra_am[36];
int ra_vib[36];
int ra_tl[36];
int ra_ksl[36];
int ra_ar[36];
int ra_dr[36];
int ra_sl[36];
int ra_rr[36];
int ra_wf[36];
int ra_fnum[18];
int ra_block[18];
int ra_keyon[18];
int ra_connect[18];
int ra_fb[18];
int ra_pan[18];
int ra_connect_pair[18];
int multi[2];
int ksr[2];
int egt[2];
int am[2];
int vib[2];
int tl[2];
int ksl[2];
int ar[2];
int dr[2];
int sl[2];
int rr[2];
int wf[2];
int fnum[2];
int block[2];
int keyon[2];
int connect[2];
int fb[2];
int pan[2];
int connect_pair[2];
int64_t ra_dbg1[2];
int ra_dbg2[2];
int ra_dbg_load[2];
int fb_l[2][2];
int pan_l[2][2];
int write0_sr;
int write0_l[4];
int write0;
int write1_sr;
int write1_l[4];
int write1;
int connect_l[2];
int connect_pair_l[2];
int t1_cnt[2];
int t2_cnt[2];
int t1_of[2];
int t2_of[2];
int t1_status;
int t2_status;
int timer_st_load_l;
int timer_st_load;
int t1_start;
int t2_start;
int t1_start_l[2];
int t2_start_l[2];
int reset0;
int reset1;
int pg_phase_o[4];
int pg_dbg[2];
int pg_dbg_load_l[2];
int noise_lfsr[2];
int pg_index[2];
int pg_cells[36];
int pg_out_rhy;
int trem_load_l;
int trem_load;
int trem_st_load_l;
int trem_st_load;
int trem_carry[2];
int trem_value[2];
int trem_dir[2];
int trem_step;
int trem_out;
int trem_of[2];
int eg_load_l1[2];
int eg_load_l;
int eg_load;
int64_t eg_timer_masked[2];
int eg_carry[2];
int eg_mask[2];
int eg_subcnt[2];
int eg_subcnt_l[2];
int eg_sync_l[2];
int eg_timer_low;
int eg_shift;
int eg_timer_dbg[2];
int eg_timer_i;
int eg_timer_o[4];
int eg_state_o[4];
int eg_level_o[4];
int eg_index[2];
int eg_cells[36];
int eg_out[2];
int eg_dbg[2];
int eg_dbg_load_l[2];
int hh_load;
int tc_load;
int hh_bit2;
int hh_bit3;
int hh_bit7;
int hh_bit8;
int tc_bit3;
int tc_bit5;
int op_logsin[2];
int op_saw[2];
int op_saw_phase[2];
int op_shift[2];
int op_pow[2];
int op_mute[2];
int op_sign[2];
int op_fb[4][13][2];
int op_mod[2];
int op_value;
int accm_a[2];
int accm_b[2];
int accm_c[2];
int accm_d[2];
int accm_shift_a[2];
int accm_shift_b[2];
int accm_shift_c[2];
int accm_shift_d[2];
int accm_load_ac_l;
int accm_load_ac;
int accm_load_bd_l;
int accm_load_bd;
int accm_a_of;
int accm_a_sign;
int accm_b_of;
int accm_b_sign;
int accm_c_of;
int accm_c_sign;
int accm_d_of;
int accm_d_sign;
int o_doab;
int o_docd;
int o_sy;
int o_smpac;
int o_smpbd;
int o_irq_pull;
int o_test;
int data_o;
int data_z;
} fmopl3_t;
// modification
void FMOPL3_Clock(fmopl3_t *chip);

339
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@ -0,0 +1,339 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
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Preamble
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Public License instead of this License.

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# YMF276-LLE
Yamaha YMF276/YM3438 (OPN2) emulator using YM3438 and YMF276 die shots.
Special thanks to John McMaster for decapping YM3438 and org(ogamespec) for decapping YMF276.
https://siliconpr0n.org/map/yamaha/ym3438/
https://drive.google.com/drive/u/0/folders/10IOhV4wf4A6SLQkS-i1wyJnyXH5o8DKn
# MODIFICATION DISCLAIMER
this is a modified version of YMF276-LLE which adds functions for per-chan osc.
the original Git commit is 172b3a40011d0d89528a7fc0d606cc92d94cd033.

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/*
* Copyright (C) 2022-2023 nukeykt
*
* This file is part of YMF276-LLE.
*
* 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.
*
* YMF276/YM3438 emulator.
* Thanks:
* John McMaster (siliconpr0n.org):
* Yamaha YM3438 & YM2610 decap and die shot.
* org, andkorzh, HardWareMan (emu-russia):
* help & support, YMF276 and YM2612 decap.
*
*/
#pragma once
#include <stdint.h>
enum {
fmopn2_flags_ym3438 = 1,
};
typedef struct {
int phi;
int ic;
} fmopn2_prescaler_input_t;
typedef struct {
int phi_phase;
int ic;
int rd;
int wr;
int cs;
int address;
int data;
int test;
int i_fsm_reset; // (chip->ic_check_latch[1] & 16) != 0;
} fmopn2_input_t;
typedef struct {
int flags;
// input
fmopn2_input_t input_old, input;
int i_phi1;
int i_phi2;
fmopn2_prescaler_input_t pinput, pinput_old;
// clock
int ic_latch[2]; // 12
int ic_check_latch[2]; // 4
int prescaler_latch[2]; // 6
int phi1_latch[2];
int phi2_latch[2];
int dphi1_latch[4];
int dphi2_latch[3];
int dclk1;
int dclk2;
int fsm_reset;
// output
int dac_val;
int out_l;
int out_r;
// io
int write_addr_trig;
int write_addr_trig_sync;
int write_addr_dlatch;
int write_addr_sr[2];
int write_data_trig;
int write_data_trig_sync;
int write_data_dlatch;
int write_data_sr[2];
int data_latch;
int bank_latch;
int busy_cnt[2];
int busy_latch[2];
int io_ic_latch[2];
int write_fm_address[2];
int fm_address[2];
int write_fm_data[2];
int fm_data[2];
int status_timer_a_dlatch;
int status_timer_b_dlatch;
// mode registers
int write_mode_21[2];
int write_mode_22[2];
int write_mode_24[2];
int write_mode_25[2];
int write_mode_26[2];
int write_mode_27[2];
int write_mode_28[2];
int write_mode_2a[2];
int write_mode_2b[2];
int write_mode_2c[2];
int mode_test_21[2];
int mode_lfo_en[2];
int mode_lfo_freq[2];
int mode_timer_a_reg[2];
int mode_timer_b_reg[2];
int mode_ch3[2];
int mode_timer_a_load[2];
int mode_timer_a_enable[2];
int mode_timer_a_reset[2];
int mode_timer_b_load[2];
int mode_timer_b_enable[2];
int mode_timer_b_reset[2];
int mode_kon_operator[2];
int mode_kon_channel[2];
int mode_dac_data[2];
int mode_dac_en[2];
int mode_test_2c[2];
int mode_kon[4][2];
// operator registers
int slot_multi[2][4][2];
int slot_dt[2][3][2];
int slot_tl[2][7][2];
int slot_ar[2][5][2];
int slot_ks[2][2][2];
int slot_dr[2][5][2];
int slot_am[2][1][2];
int slot_sr[2][5][2];
int slot_rr[2][4][2];
int slot_sl[2][4][2];
int slot_ssg_eg[2][4][2];
// channel registers
int chan_fnum[11][2];
int chan_fnum_ch3[11][2];
int chan_block[3][2];
int chan_block_ch3[3][2];
int chan_a4[2];
int chan_ac[2];
int chan_connect[3][2];
int chan_fb[3][2];
int chan_pms[3][2];
int chan_ams[2][2];
int chan_pan[2][2];
int reg_cnt1[2];
int reg_cnt2[2];
// lfo
int lfo_cnt1[2];
int lfo_cnt2[2];
int lfo_dlatch;
int lfo_dlatch_load;
int lfo_inc_latch[2];
// pg
int pg_fnum[2][2];
int pg_kcode[2][2];
int pg_fnum_lfo1;
int pg_fnum_lfo2;
int pg_lfo_shift;
int pg_lfo_sign;
int pg_lfo;
int pg_freq1;
int pg_freq2;
int pg_freq3;
int pg_freq4;
int pg_freq5[2];
int pg_freq6;
int pg_freq_m1;
int pg_block;
int pg_dt[2];
int pg_detune[2];
int pg_multi[2][2];
int pg_multi2;
int pg_inc[2];
int pg_inc_mask[2];
int pg_phase[20][2];
int pg_reset_latch[2];
int pg_debug[2];
int pg_reset[2];
// eg
int eg_prescaler[2];
int eg_prescaler_clock_l[2];
int eg_prescaler_l;
int eg_clock_delay[2];
int eg_step[2];
int eg_timer_load;
int eg_timer[2];
int eg_timer_carry[2];
int eg_timer_mask[2];
int eg_timer_masked[2];
int eg_timer_low_lock;
int eg_shift_lock;
int eg_level[10][2];
int eg_level_latch[2];
int eg_level_latch_inv;
int eg_state[2][2];
int eg_ssg_dir[2];
int eg_ssg_inv[2];
int eg_ssg_holdup[2];
int eg_ssg_enable[2];
int eg_ssg_pgreset[2];
int eg_ssg_pgrepeat[2];
int eg_key[2];
int eg_rate_nonzero[2];
int eg_rate;
int eg_ksv;
int eg_rate2;
int eg_inc1;
int eg_inc2;
int eg_rate12;
int eg_rate13;
int eg_rate14;
int eg_rate15;
int eg_maxrate[2];
int eg_incsh0;
int eg_incsh1;
int eg_incsh2;
int eg_incsh3;
int eg_incsh_nonzero[2];
int eg_inc_total;
int eg_level_ssg[2];
int eg_sl[2][2];
int eg_nextlevel[2];
int eg_kon_csm[2];
int eg_kon_latch[2];
int eg_tl[2][2];
int eg_ams;
int eg_lfo[2];
int eg_ch3_latch[2];
int eg_out;
int eg_out_tl;
int eg_out_total;
int eg_debug[2];
// op
int op_mod[10][2];
int op_phase[2];
int op_logsin_base[2];
int op_logsin_delta[2];
int op_logsin_add_delta[2];
int op_atten[2];
int op_env[2];
int op_pow_base[2];
int op_pow_delta[2];
int op_pow_add_delta[2];
int op_shift[2];
int op_sign[2];
int op_output[2];
int op_op1[2][14][2];
int op_op2[14][2];
int op_mod_sum[2];
int op_dofeedback[2];
// accumulator
int ch_accm[14][2];
int ch_out[9][2];
int ch_out_dlatch;
int ch_out_pan_dlatch;
int ch_dac_load;
int ch_out_debug[2];
int ch_accm_l[2];
int ch_accm_r[2];
// timers
int timer_dlatch;
int timer_a_cnt[2];
int timer_a_load_latch[2];
int timer_a_load_old[2];
int timer_a_load_dlatch;
int timer_a_of[2];
int timer_a_status[2];
int timer_b_subcnt[2];
int timer_b_subcnt_of[2];
int timer_b_cnt[2];
int timer_b_load_latch[2];
int timer_b_load_old[2];
int timer_b_load_dlatch;
int timer_b_of[2];
int timer_b_status[2];
int timer_csm_key_dlatch;
// fm algorithm
int alg_mod_op1_0;
int alg_mod_op1_1;
int alg_mod_op2;
int alg_mod_prev_0;
int alg_mod_prev_1;
int alg_output;
int alg_mod_op1_0_l;
int alg_mod_op1_1_l;
int alg_mod_op2_l;
int alg_mod_prev_0_l;
int alg_mod_prev_1_l;
int alg_output_l;
// fsm
int fsm_cnt1[2];
int fsm_cnt2[2];
// fsm table output
int fsm_clock_eg;
int fsm_clock_timers1;
int fsm_clock_timers;
int fsm_op4_sel;
int fsm_op1_sel;
int fsm_op2_sel;
int fsm_op3_sel;
int fsm_sel2;
int fsm_sel23;
int fsm_ch3_sel;
int fsm_dac_load;
int fsm_dac_out_sel;
int fsm_dac_ch6;
// ymf276
int fsm_clock_eg_l;
int fsm_op1_sel_l;
int fsm_sel1_l;
int fsm_sel2_l;
int fsm_sel23_l;
int fsm_ch3_sel_l;
int fsm_dac_load_l;
int fsm_dac_out_sel_l;
int fsm_dac_ch6_l;
int fsm_lro_l[2];
int fsm_wco_l[2];
int fsm_lro_l2[2];
int fsm_wco_l2[2];
int fsm_op1_sel_l2[2];
int fsm_op1_sel_l3[2];
int fsm_shifter_ctrl[2];
int fsm_load_l;
int fsm_load_r;
int dac_shifter[2];
int dac_so_l[2];
int o_bco;
int o_wco;
int o_lro;
int o_so;
} fmopn2_t;
int FMOPN2_ReadStatus(fmopn2_t *chip);
void FMOPN2_Clock(fmopn2_t *chip, int phi);