diff --git a/extern/SDL b/extern/SDL
index 2359383fc..ffa78e6be 160000
--- a/extern/SDL
+++ b/extern/SDL
@@ -1 +1 @@
-Subproject commit 2359383fc187386204c3bb22de89655a494cd128
+Subproject commit ffa78e6bead23e2ba3adf8ec2367ff2218d4343c
diff --git a/extern/YM2608-LLE/README.md b/extern/YM2608-LLE/README.md
index a605ff36d..4184ad60b 100644
--- a/extern/YM2608-LLE/README.md
+++ b/extern/YM2608-LLE/README.md
@@ -1,9 +1,11 @@
 # YM2608-LLE
 
-Very low-level Yamaha YM2608B(OPNA), YM2610(OPNB) and YM2612 (OPN2) emulator using die shots.
+Very low-level Yamaha YM2608B(OPNA), YM2610/YM2610B(OPNB) and YM2612 (OPN2) emulator using die shots.
 
-Special thanks to @ika-musume for decapping YM2608B, John McMaster for decapping YM2610, and HardWareMan for decapping YM2612.
+Special thanks to @ika-musume for decapping YM2608B, John McMaster for decapping YM2610, HardWareMan for decapping YM2612, and furrtek for decapping YM2610B..
 
 https://siliconpr0n.org/map/yamaha/ym2610/
 
 http://nemesis.hacking-cult.org/MegaDrive/Documentation/YM2612/YM2612_Stiched.jpg
+
+https://siliconpr0n.org/map/yamaha/ym2610b/
diff --git a/extern/YM2608-LLE/fmopna_impl.c b/extern/YM2608-LLE/fmopna_impl.c
index a68e4c533..93daff11b 100644
--- a/extern/YM2608-LLE/fmopna_impl.c
+++ b/extern/YM2608-LLE/fmopna_impl.c
@@ -466,8 +466,6 @@ void FMOPNA_2612_Clock(fmopna_2612_t* chip, int clk)
                 chip->reg_timer_b_load[0] = 0;
                 chip->reg_timer_a_enable[0] = 0;
                 chip->reg_timer_b_enable[0] = 0;
-                chip->reg_timer_a_reset[0] = 0;
-                chip->reg_timer_b_reset[0] = 0;
                 chip->reg_kon_operator[0] = 0;
                 chip->reg_kon_channel[0] = 0;
 #ifdef FMOPNA_YM2608
@@ -573,8 +571,6 @@ void FMOPNA_2612_Clock(fmopna_2612_t* chip, int clk)
                     chip->reg_timer_b_load[0] = (chip->data_bus1 >> 1) & 1;
                     chip->reg_timer_a_enable[0] = (chip->data_bus1 >> 2) & 1;
                     chip->reg_timer_b_enable[0] = (chip->data_bus1 >> 3) & 1;
-                    chip->reg_timer_a_reset[0] = (chip->data_bus1 >> 4) & 1;
-                    chip->reg_timer_b_reset[0] = (chip->data_bus1 >> 5) & 1;
                 }
                 else
                 {
@@ -583,8 +579,6 @@ void FMOPNA_2612_Clock(fmopna_2612_t* chip, int clk)
                     chip->reg_timer_b_load[0] = chip->reg_timer_b_load[1];
                     chip->reg_timer_a_enable[0] = chip->reg_timer_a_enable[1];
                     chip->reg_timer_b_enable[0] = chip->reg_timer_b_enable[1];
-                    chip->reg_timer_a_reset[0] = 0;
-                    chip->reg_timer_b_reset[0] = 0;
                 }
                 if (chip->addr_28[1] && (chip->data_bus1 & 0x100) == 0 && chip->write1_en)
                 {
@@ -636,6 +630,9 @@ void FMOPNA_2612_Clock(fmopna_2612_t* chip, int clk)
 #endif
             }
 
+            chip->reg_timer_a_reset[0] = chip->addr_27[1] && (chip->data_bus1 & 0x100) == 0 && chip->write1_en && ((chip->data_bus1 >> 4) & 1) != 0;
+            chip->reg_timer_b_reset[0] = chip->addr_27[1] && (chip->data_bus1 & 0x100) == 0 && chip->write1_en && ((chip->data_bus1 >> 5) & 1) != 0;
+
             int rst1 = chip->reg_cnt_sync || chip->ic;
             int of = (chip->reg_cnt1[1] & 2) != 0;
 
@@ -940,7 +937,7 @@ void FMOPNA_2612_Clock(fmopna_2612_t* chip, int clk)
                     )
 #ifdef FMOPNA_YM2610
                 // tildearrow: changed to allow YM2610B emulation
-                && (chip->ym2610b || (chip->reg_kon_channel[0] & 3) != 0)
+                && (chip->ym2610b || (chip->reg_kon_channel[0] & 3) != 0) || chip->input.ym2610b)
 #endif
                 ;
 
@@ -1333,7 +1330,7 @@ void FMOPNA_2612_Clock(fmopna_2612_t* chip, int clk)
             chip->pg_add[4] = chip->pg_add[3];
 
             chip->pg_reset[1] = chip->pg_reset[0];
-            chip->pg_reset[3] = chip->pg_reset[2];
+            chip->pg_reset[3] = chip->pg_reset[2] || (chip->reg_test_21[1] & 8) != 0;
 
             memcpy(&chip->pg_phase[0][1], &chip->pg_phase[1][0], 22 * sizeof(int));
 
@@ -2256,8 +2253,8 @@ void FMOPNA_2612_Clock(fmopna_2612_t* chip, int clk)
                     break;
 #ifdef FMOPNA_YM2608
                 case 0xe:
-                    chip->data_bus1 &= ~15;
-                    chip->data_bus1 |= chip->input.gpio_a & 15;
+                    chip->data_bus1 &= ~255;
+                    chip->data_bus1 |= chip->input.gpio_a & 255;
                     break;
                 case 0xf:
                     chip->data_bus1 &= ~255;
@@ -2436,6 +2433,10 @@ void FMOPNA_2612_Clock(fmopna_2612_t* chip, int clk)
         chip->o_analog += chip->o_analog_ch[0] = volume_lut[sign_a ? 0 : vol_a];
         chip->o_analog += chip->o_analog_ch[1] = volume_lut[sign_b ? 0 : vol_b];
         chip->o_analog += chip->o_analog_ch[2] = volume_lut[sign_c ? 0 : vol_c];
+
+        //please work
+        chip->o_gpio_a_d = (chip->ssg_mode & 64) == 0;
+        chip->o_gpio_b_d = (chip->ssg_mode & 128) == 0;
     }
 
     {
diff --git a/extern/YM2608-LLE/fmopna_impl.h b/extern/YM2608-LLE/fmopna_impl.h
index c076f0145..4e795ef9f 100644
--- a/extern/YM2608-LLE/fmopna_impl.h
+++ b/extern/YM2608-LLE/fmopna_impl.h
@@ -52,6 +52,7 @@ typedef struct {
 #ifdef FMOPNA_YM2610
     int rad;
     int pad;
+    int ym2610b;
 #endif
 }
 #ifdef FMOPNA_YM2608