diff --git a/Marlin/stepper.cpp b/Marlin/stepper.cpp
index d0828768df..2bcafa469c 100644
--- a/Marlin/stepper.cpp
+++ b/Marlin/stepper.cpp
@@ -787,7 +787,7 @@ void Stepper::isr() {
     #if ENABLED(MK2_MULTIPLEXER) // For SNMM even-numbered steppers are reversed
       #define SET_E_STEP_DIR(INDEX) do{ if (e_steps) E## INDEX ##_DIR_WRITE(e_steps < 0 ? !INVERT_E## INDEX ##_DIR ^ TEST(INDEX, 0) : INVERT_E## INDEX ##_DIR ^ TEST(INDEX, 0)); }while(0)
     #elif ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
-      #define SET_E_STEP_DIR(INDEX) do{ if (e_steps) { e_steps < 0 ? REV_E_DIR() : NORM_E_DIR(); } }while(0)
+      #define SET_E_STEP_DIR(INDEX) do{ if (e_steps) { if (e_steps < 0) REV_E_DIR(); else NORM_E_DIR(); } }while(0)
     #else
       #define SET_E_STEP_DIR(INDEX) do{ if (e_steps) E## INDEX ##_DIR_WRITE(e_steps < 0 ? INVERT_E## INDEX ##_DIR : !INVERT_E## INDEX ##_DIR); }while(0)
     #endif
diff --git a/Marlin/stepper_indirection.h b/Marlin/stepper_indirection.h
index f24936d4d0..d5624fe33b 100644
--- a/Marlin/stepper_indirection.h
+++ b/Marlin/stepper_indirection.h
@@ -21,25 +21,25 @@
  */
 
 /**
-  stepper_indirection.h - stepper motor driver indirection macros
-  to allow some stepper functions to be done via SPI/I2c instead of direct pin manipulation
-  Part of Marlin
-
-  Copyright (c) 2015 Dominik Wenger
-
-  Marlin 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 3 of the License, or
-  (at your option) any later version.
-
-  Marlin 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.
-
-  You should have received a copy of the GNU General Public License
-  along with Marlin.  If not, see <http://www.gnu.org/licenses/>.
-*/
+ * stepper_indirection.h - stepper motor driver indirection macros
+ * to allow some stepper functions to be done via SPI/I2c instead of direct pin manipulation
+ * Part of Marlin
+ *
+ * Copyright (c) 2015 Dominik Wenger
+ *
+ * Marlin 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 3 of the License, or
+ * at your option) any later version.
+ *
+ * Marlin 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Marlin.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #ifndef STEPPER_INDIRECTION_H
 #define STEPPER_INDIRECTION_H
@@ -449,58 +449,58 @@
     #define NORM_E_DIR() E0_DIR_WRITE(current_block->active_extruder ?  INVERT_E0_DIR : !INVERT_E0_DIR)
     #define  REV_E_DIR() E0_DIR_WRITE(current_block->active_extruder ? !INVERT_E0_DIR :  INVERT_E0_DIR)
   #elif EXTRUDERS > 4
-    #define E_STEP_WRITE(v) { if (current_block->active_extruder < 2) E0_STEP_WRITE(v); else if (current_block->active_extruder < 4) E1_STEP_WRITE(v); else E2_STEP_WRITE(v); }
-    #define NORM_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E0_DIR_WRITE(INVERT_E0_DIR); break; case 2: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 3: E1_DIR_WRITE(INVERT_E1_DIR); break; case 4: E2_DIR_WRITE(!INVERT_E2_DIR); } }
-    #define REV_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 2: E1_DIR_WRITE(INVERT_E1_DIR); break; case 3: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 4: E2_DIR_WRITE(INVERT_E2_DIR); } }
+    #define E_STEP_WRITE(v) do{ if (current_block->active_extruder < 2) E0_STEP_WRITE(v); else if (current_block->active_extruder < 4) E1_STEP_WRITE(v); else E2_STEP_WRITE(v); }while(0)
+    #define NORM_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E0_DIR_WRITE(INVERT_E0_DIR); break; case 2: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 3: E1_DIR_WRITE(INVERT_E1_DIR); break; case 4: E2_DIR_WRITE(!INVERT_E2_DIR); } }while(0)
+    #define REV_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 2: E1_DIR_WRITE(INVERT_E1_DIR); break; case 3: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 4: E2_DIR_WRITE(INVERT_E2_DIR); } }while(0)
   #elif EXTRUDERS > 2
-    #define E_STEP_WRITE(v) { if (current_block->active_extruder < 2) E0_STEP_WRITE(v); else if (current_block->active_extruder < 4) E1_STEP_WRITE(v); else E1_STEP_WRITE(v); }
-    #define NORM_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E0_DIR_WRITE(INVERT_E0_DIR); break; case 2: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 3: E1_DIR_WRITE(INVERT_E1_DIR); } }
-    #define REV_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 2: E1_DIR_WRITE(INVERT_E1_DIR); break; case 3: E1_DIR_WRITE(!INVERT_E1_DIR); } }
+    #define E_STEP_WRITE(v) do{ if (current_block->active_extruder < 2) E0_STEP_WRITE(v); else if (current_block->active_extruder < 4) E1_STEP_WRITE(v); else E1_STEP_WRITE(v); }while(0)
+    #define NORM_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E0_DIR_WRITE(INVERT_E0_DIR); break; case 2: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 3: E1_DIR_WRITE(INVERT_E1_DIR); } }while(0)
+    #define REV_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 2: E1_DIR_WRITE(INVERT_E1_DIR); break; case 3: E1_DIR_WRITE(!INVERT_E1_DIR); } }while(0)
   #endif
 #elif ENABLED(MK2_MULTIPLEXER) // Even-numbered steppers are reversed
   #define E_STEP_WRITE(v) E0_STEP_WRITE(v)
   #define NORM_E_DIR() E0_DIR_WRITE(TEST(current_block->active_extruder, 0) ? !INVERT_E0_DIR: INVERT_E0_DIR)
   #define REV_E_DIR() E0_DIR_WRITE(TEST(current_block->active_extruder, 0) ? INVERT_E0_DIR: !INVERT_E0_DIR)
 #elif EXTRUDERS > 4
-  #define E_STEP_WRITE(v) { switch (current_block->active_extruder) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); break; case 3: E3_STEP_WRITE(v); break; case 4: E4_STEP_WRITE(v); } }
-  #define NORM_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); break; case 4: E4_DIR_WRITE(!INVERT_E4_DIR); } }
-  #define REV_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(INVERT_E3_DIR); break; case 4: E4_DIR_WRITE(INVERT_E4_DIR); } }
+  #define E_STEP_WRITE(v) do{ switch (current_block->active_extruder) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); break; case 3: E3_STEP_WRITE(v); break; case 4: E4_STEP_WRITE(v); } }while(0)
+  #define NORM_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); break; case 4: E4_DIR_WRITE(!INVERT_E4_DIR); } }while(0)
+  #define REV_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(INVERT_E3_DIR); break; case 4: E4_DIR_WRITE(INVERT_E4_DIR); } }while(0)
 #elif EXTRUDERS > 3
-  #define E_STEP_WRITE(v) { switch (current_block->active_extruder) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); break; case 3: E3_STEP_WRITE(v); } }
-  #define NORM_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); } }
-  #define REV_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(INVERT_E3_DIR); } }
+  #define E_STEP_WRITE(v) do{ switch (current_block->active_extruder) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); break; case 3: E3_STEP_WRITE(v); } }while(0)
+  #define NORM_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); } }while(0)
+  #define REV_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(INVERT_E3_DIR); } }while(0)
 #elif EXTRUDERS > 2
-  #define E_STEP_WRITE(v) { switch (current_block->active_extruder) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); } }
-  #define NORM_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); } }
-  #define REV_E_DIR() { switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(INVERT_E2_DIR); } }
+  #define E_STEP_WRITE(v) do{ switch (current_block->active_extruder) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); } }while(0)
+  #define NORM_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); } }while(0)
+  #define REV_E_DIR() do{ switch (current_block->active_extruder) { case 0: E0_DIR_WRITE(INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(INVERT_E2_DIR); } }while(0)
 #elif EXTRUDERS > 1
   #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
-    #define E_STEP_WRITE(v) { if (extruder_duplication_enabled) { E0_STEP_WRITE(v); E1_STEP_WRITE(v); } else if (current_block->active_extruder == 0) { E0_STEP_WRITE(v); } else { E1_STEP_WRITE(v); } }
-    #define NORM_E_DIR() { if (extruder_duplication_enabled) { E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); } else if (current_block->active_extruder == 0) { E0_DIR_WRITE(!INVERT_E0_DIR); } else { E1_DIR_WRITE(!INVERT_E1_DIR); } }
-    #define REV_E_DIR() { if (extruder_duplication_enabled) { E0_DIR_WRITE(INVERT_E0_DIR); E1_DIR_WRITE(INVERT_E1_DIR); } else if (current_block->active_extruder == 0) { E0_DIR_WRITE(INVERT_E0_DIR); } else { E1_DIR_WRITE(INVERT_E1_DIR); } }
+    #define E_STEP_WRITE(v) do{ if (extruder_duplication_enabled) { E0_STEP_WRITE(v); E1_STEP_WRITE(v); } else if (current_block->active_extruder == 0) { E0_STEP_WRITE(v); } else { E1_STEP_WRITE(v); } }while(0)
+    #define NORM_E_DIR() do{ if (extruder_duplication_enabled) { E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); } else if (current_block->active_extruder == 0) { E0_DIR_WRITE(!INVERT_E0_DIR); } else { E1_DIR_WRITE(!INVERT_E1_DIR); } }while(0)
+    #define REV_E_DIR() do{ if (extruder_duplication_enabled) { E0_DIR_WRITE(INVERT_E0_DIR); E1_DIR_WRITE(INVERT_E1_DIR); } else if (current_block->active_extruder == 0) { E0_DIR_WRITE(INVERT_E0_DIR); } else { E1_DIR_WRITE(INVERT_E1_DIR); } }while(0)
   #else
-    #define E_STEP_WRITE(v) { if (current_block->active_extruder == 0) { E0_STEP_WRITE(v); } else { E1_STEP_WRITE(v); } }
-    #define NORM_E_DIR() { if (current_block->active_extruder == 0) { E0_DIR_WRITE(!INVERT_E0_DIR); } else { E1_DIR_WRITE(!INVERT_E1_DIR); } }
-    #define REV_E_DIR() { if (current_block->active_extruder == 0) { E0_DIR_WRITE(INVERT_E0_DIR); } else { E1_DIR_WRITE(INVERT_E1_DIR); } }
+    #define E_STEP_WRITE(v) do{ if (current_block->active_extruder == 0) { E0_STEP_WRITE(v); } else { E1_STEP_WRITE(v); } }while(0)
+    #define NORM_E_DIR() do{ if (current_block->active_extruder == 0) { E0_DIR_WRITE(!INVERT_E0_DIR); } else { E1_DIR_WRITE(!INVERT_E1_DIR); } }while(0)
+    #define REV_E_DIR() do{ if (current_block->active_extruder == 0) { E0_DIR_WRITE(INVERT_E0_DIR); } else { E1_DIR_WRITE(INVERT_E1_DIR); } }while(0)
   #endif
 #elif ENABLED(MIXING_EXTRUDER)
   #define E_STEP_WRITE(v) NOOP /* not used for mixing extruders! */
   #if MIXING_STEPPERS > 4
-    #define En_STEP_WRITE(n,v) { switch (n) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); break; case 3: E3_STEP_WRITE(v); break; case 4: E4_STEP_WRITE(v); } }
-    #define NORM_E_DIR() { E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); E2_DIR_WRITE(!INVERT_E2_DIR); E3_DIR_WRITE(!INVERT_E3_DIR); E4_DIR_WRITE(!INVERT_E4_DIR); }
-    #define REV_E_DIR()  { E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); E2_DIR_WRITE( INVERT_E2_DIR); E3_DIR_WRITE( INVERT_E3_DIR); E4_DIR_WRITE( INVERT_E4_DIR); }
+    #define En_STEP_WRITE(n,v) do{ switch (n) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); break; case 3: E3_STEP_WRITE(v); break; case 4: E4_STEP_WRITE(v); } }while(0)
+    #define NORM_E_DIR() do{ E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); E2_DIR_WRITE(!INVERT_E2_DIR); E3_DIR_WRITE(!INVERT_E3_DIR); E4_DIR_WRITE(!INVERT_E4_DIR); }while(0)
+    #define REV_E_DIR()  do{ E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); E2_DIR_WRITE( INVERT_E2_DIR); E3_DIR_WRITE( INVERT_E3_DIR); E4_DIR_WRITE( INVERT_E4_DIR); }while(0)
   #elif MIXING_STEPPERS > 3
-    #define En_STEP_WRITE(n,v) { switch (n) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); break; case 3: E3_STEP_WRITE(v); } }
-    #define NORM_E_DIR() { E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); E2_DIR_WRITE(!INVERT_E2_DIR); E3_DIR_WRITE(!INVERT_E3_DIR); }
-    #define REV_E_DIR()  { E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); E2_DIR_WRITE( INVERT_E2_DIR); E3_DIR_WRITE( INVERT_E3_DIR); }
+    #define En_STEP_WRITE(n,v) do{ switch (n) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); break; case 3: E3_STEP_WRITE(v); } }while(0)
+    #define NORM_E_DIR() do{ E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); E2_DIR_WRITE(!INVERT_E2_DIR); E3_DIR_WRITE(!INVERT_E3_DIR); }while(0)
+    #define REV_E_DIR()  do{ E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); E2_DIR_WRITE( INVERT_E2_DIR); E3_DIR_WRITE( INVERT_E3_DIR); }while(0)
   #elif MIXING_STEPPERS > 2
-    #define En_STEP_WRITE(n,v) { switch (n) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); } }
-    #define NORM_E_DIR() { E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); E2_DIR_WRITE(!INVERT_E2_DIR); }
-    #define REV_E_DIR()  { E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); E2_DIR_WRITE( INVERT_E2_DIR); }
+    #define En_STEP_WRITE(n,v) do{ switch (n) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); break; case 2: E2_STEP_WRITE(v); } }while(0)
+    #define NORM_E_DIR() do{ E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); E2_DIR_WRITE(!INVERT_E2_DIR); }while(0)
+    #define REV_E_DIR()  do{ E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); E2_DIR_WRITE( INVERT_E2_DIR); }while(0)
   #else
-    #define En_STEP_WRITE(n,v) { switch (n) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); } }
-    #define NORM_E_DIR() { E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); }
-    #define REV_E_DIR()  { E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); }
+    #define En_STEP_WRITE(n,v) do{ switch (n) { case 0: E0_STEP_WRITE(v); break; case 1: E1_STEP_WRITE(v); } }while(0)
+    #define NORM_E_DIR() do{ E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); }while(0)
+    #define REV_E_DIR()  do{ E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); }while(0)
   #endif
 #else
   #define E_STEP_WRITE(v) E0_STEP_WRITE(v)