From db2f157a222c0fbffb274a2f9c27f89858f51234 Mon Sep 17 00:00:00 2001
From: midopple <mdoppler@gmx.at>
Date: Sun, 5 May 2013 19:19:55 +0200
Subject: [PATCH 1/2] Replace the <= to < in the Command M907, M350 and M351.
 The for loop for Axis count over the Array. Add a break after M907

---
 Marlin/Marlin_main.cpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 233e2fa427..9f2ba7be17 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -1708,11 +1708,12 @@ void process_commands()
     case 907: // M907 Set digital trimpot motor current using axis codes.
     {
       #if DIGIPOTSS_PIN > -1
-        for(int i=0;i<=NUM_AXIS;i++) if(code_seen(axis_codes[i])) digipot_current(i,code_value());
+        for(int i=0;i<NUM_AXIS;i++) if(code_seen(axis_codes[i])) digipot_current(i,code_value());
         if(code_seen('B')) digipot_current(4,code_value());
         if(code_seen('S')) for(int i=0;i<=4;i++) digipot_current(i,code_value());
       #endif
     }
+    break;
     case 908: // M908 Control digital trimpot directly.
     {
       #if DIGIPOTSS_PIN > -1
@@ -1727,7 +1728,7 @@ void process_commands()
     {
       #if X_MS1_PIN > -1
         if(code_seen('S')) for(int i=0;i<=4;i++) microstep_mode(i,code_value()); 
-        for(int i=0;i<=NUM_AXIS;i++) if(code_seen(axis_codes[i])) microstep_mode(i,(uint8_t)code_value());
+        for(int i=0;i<NUM_AXIS;i++) if(code_seen(axis_codes[i])) microstep_mode(i,(uint8_t)code_value());
         if(code_seen('B')) microstep_mode(4,code_value());
         microstep_readings();
       #endif
@@ -1739,11 +1740,11 @@ void process_commands()
       if(code_seen('S')) switch((int)code_value())
       {
         case 1:
-          for(int i=0;i<=NUM_AXIS;i++) if(code_seen(axis_codes[i])) microstep_ms(i,code_value(),-1);
+          for(int i=0;i<NUM_AXIS;i++) if(code_seen(axis_codes[i])) microstep_ms(i,code_value(),-1);
           if(code_seen('B')) microstep_ms(4,code_value(),-1);
           break;
         case 2:
-          for(int i=0;i<=NUM_AXIS;i++) if(code_seen(axis_codes[i])) microstep_ms(i,-1,code_value());
+          for(int i=0;i<NUM_AXIS;i++) if(code_seen(axis_codes[i])) microstep_ms(i,-1,code_value());
           if(code_seen('B')) microstep_ms(4,-1,code_value());
           break;
       }

From a65a26d6b45ba871100fef096ca9a2ee598e6804 Mon Sep 17 00:00:00 2001
From: midopple <mdoppler@gmx.at>
Date: Sun, 5 May 2013 19:23:59 +0200
Subject: [PATCH 2/2] If CORE_XY is in use X and Y Axis had to be activated at
 the same time

---
 Marlin/planner.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Marlin/planner.cpp b/Marlin/planner.cpp
index e45c9d7ff9..854fd19eec 100644
--- a/Marlin/planner.cpp
+++ b/Marlin/planner.cpp
@@ -582,8 +582,16 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
   block->active_extruder = extruder;
 
   //enable active axes
+  #ifdef COREXY
+  if((block->steps_x != 0) || (block->steps_y != 0))
+  {
+    enable_x();
+    enable_y();
+  }
+  #else
   if(block->steps_x != 0) enable_x();
   if(block->steps_y != 0) enable_y();
+  #endif
 #ifndef Z_LATE_ENABLE
   if(block->steps_z != 0) enable_z();
 #endif