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# MODIFICATION DISCLAIMER
this is a modified version of YM3812-LLE which adds functions to allow its usage.
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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# MODIFICATION DISCLAIMER
this is a modified version of YMF262-LLE which adds functions to allow its usage.
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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# 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);

2
src/gui/about.cpp
View file

@ -179,7 +179,7 @@ const char* aboutLine[]={
"backward-cpp by Google",
"adpcm by superctr",
"Nuked-OPL3/OPLL/OPM/OPN2/PSG by nukeykt",
"YM3812-LLE and YMF262-LLE by nukeykt",
"YM3812-LLE, YMF262-LLE and YMF276-LLE by nukeykt",
"ymfm by Aaron Giles",
"MAME SN76496 by Nicola Salmoria",
"MAME AY-3-8910 by Couriersud",

1
src/main.cpp
View file

@ -217,6 +217,7 @@ TAParamResult pVersion(String) {
printf("- Nuked-PSG (modified version) by nukeykt (GPLv2)\n");
printf("- YM3812-LLE by nukeykt (GPLv2)\n");
printf("- YMF262-LLE by nukeykt (GPLv2)\n");
printf("- YMF276-LLE by nukeykt (GPLv2)\n");
printf("- ymfm by Aaron Giles (BSD 3-clause)\n");
printf("- adpcm by superctr (public domain)\n");
printf("- MAME SN76496 emulation core by Nicola Salmoria (BSD 3-clause)\n");