7503 - baremetal: noodling on default VGA palette

3 files changed, 451 insertions, 0 deletions

diff --git a/baremetal/vga_palette b/baremetal/vga_palette
new file mode 100644
index 00000000..1b69c3c8
--- /dev/null
+++ b/baremetal/vga_palette
@@ -0,0 +1,283 @@
+# Default VGA 256-color palette
+
+# First 16 colors
+  0:  0  0  0                                                                                                                                                                                                   
+  1:  0  0 42                                                                                                                                   ..........................................                      
+  2:  0 42  0                                                                  ..........................................                                                                                       
+  3:  0 42 42                                                                  ..........................................                       ..........................................                      
+  4: 42  0  0 ..........................................                                                                                                                                                        
+  5: 42  0 42 ..........................................                                                                                        ..........................................                      
+  6: 42 21  0 ..........................................                       .....................                                                                                                            
+  7: 42 42 42 ..........................................                       ..........................................                       ..........................................                      
+  8: 21 21 21 .....................                                            .....................                                            .....................                                           
+  9: 21 21 63 .....................                                            .....................                                            ............................................................... 
+ 10: 21 63 21 .....................                                            ...............................................................  .....................                                           
+ 11: 21 63 63 .....................                                            ...............................................................  ............................................................... 
+ 12: 63 21 21 ...............................................................  .....................                                            .....................                                           
+ 13: 63 21 63 ...............................................................  .....................                                            ............................................................... 
+ 14: 63 63 21 ...............................................................  ...............................................................  .....................                                           
+ 15: 63 63 63 ...............................................................  ...............................................................  ............................................................... 
+
+# Greyscale
+ 16:  0  0  0                                                                                                                                                                                                   
+ 17:  5  5  5 .....                                                            .....                                                            .....                                                           
+ 18:  8  8  8 ........                                                         ........                                                         ........                                                        
+ 19: 11 11 11 ...........                                                      ...........                                                      ...........                                                     
+ 20: 14 14 14 ..............                                                   ..............                                                   ..............                                                  
+ 21: 17 17 17 .................                                                .................                                                .................                                               
+ 22: 20 20 20 ....................                                             ....................                                             ....................                                            
+ 23: 24 24 24 ........................                                         ........................                                         ........................                                        
+ 24: 28 28 28 ............................                                     ............................                                     ............................                                    
+ 25: 32 32 32 ................................                                 ................................                                 ................................                                
+ 26: 36 36 36 ....................................                             ....................................                             ....................................                            
+ 27: 40 40 40 ........................................                         ........................................                         ........................................                        
+ 28: 45 45 45 .............................................                    .............................................                    .............................................                   
+ 29: 50 50 50 ..................................................               ..................................................               ..................................................              
+ 30: 56 56 56 ........................................................         ........................................................         ........................................................        
+ 31: 63 63 63 ...............................................................  ...............................................................  ............................................................... 
+
+# Cycle 0
+ 32:  0  0 63                                                                                                                                   ............................................................... 
+ 33: 16  0 63 ................                                                                                                                  ............................................................... 
+ 34: 31  0 63 ...............................                                                                                                   ............................................................... 
+ 35: 47  0 63 ...............................................                                                                                   ............................................................... 
+ 36: 63  0 63 ...............................................................                                                                   ............................................................... 
+ 37: 63  0 47 ...............................................................                                                                   ...............................................                 
+ 38: 63  0 31 ...............................................................                                                                   ...............................                                 
+ 39: 63  0 16 ...............................................................                                                                   ................                                                
+ 40: 63  0  0 ...............................................................                                                                                                                                   
+ 41: 63 16  0 ...............................................................  ................                                                                                                                 
+ 42: 63 31  0 ...............................................................  ...............................                                                                                                  
+ 43: 63 47  0 ...............................................................  ...............................................                                                                                  
+ 44: 63 63  0 ...............................................................  ...............................................................                                                                  
+ 45: 47 63  0 ...............................................                  ...............................................................                                                                  
+ 46: 31 63  0 ...............................                                  ...............................................................                                                                  
+ 47: 16 63  0 ................                                                 ...............................................................                                                                  
+ 48:  0 63  0                                                                  ...............................................................                                                                  
+ 49:  0 63 16                                                                  ...............................................................  ................                                                
+ 50:  0 63 31                                                                  ...............................................................  ...............................                                 
+ 51:  0 63 47                                                                  ...............................................................  ...............................................                 
+ 52:  0 63 63                                                                  ...............................................................  ............................................................... 
+ 53:  0 47 63                                                                  ...............................................                  ............................................................... 
+ 54:  0 31 63                                                                  ...............................                                  ............................................................... 
+ 55:  0 16 63                                                                  ................                                                 ............................................................... 
+
+ # Cycle 1
+ 56: 31 31 63 ...............................                                  ...............................                                  ............................................................... 
+ 57: 39 31 63 .......................................                          ...............................                                  ............................................................... 
+ 58: 47 31 63 ...............................................                  ...............................                                  ............................................................... 
+ 59: 55 31 63 .......................................................          ...............................                                  ............................................................... 
+ 60: 63 31 63 ...............................................................  ...............................                                  ............................................................... 
+ 61: 63 31 55 ...............................................................  ...............................                                  .......................................................         
+ 62: 63 31 47 ...............................................................  ...............................                                  ...............................................                 
+ 63: 63 31 39 ...............................................................  ...............................                                  .......................................                         
+ 64: 63 31 31 ...............................................................  ...............................                                  ...............................                                 
+ 65: 63 39 31 ...............................................................  .......................................                          ...............................                                 
+ 66: 63 47 31 ...............................................................  ...............................................                  ...............................                                 
+ 67: 63 55 31 ...............................................................  .......................................................          ...............................                                 
+ 68: 63 63 31 ...............................................................  ...............................................................  ...............................                                 
+ 69: 55 63 31 .......................................................          ...............................................................  ...............................                                 
+ 70: 47 63 31 ...............................................                  ...............................................................  ...............................                                 
+ 71: 39 63 31 .......................................                          ...............................................................  ...............................                                 
+ 72: 31 63 31 ...............................                                  ...............................................................  ...............................                                 
+ 73: 31 63 39 ...............................                                  ...............................................................  .......................................                         
+ 74: 31 63 47 ...............................                                  ...............................................................  ...............................................                 
+ 75: 31 63 55 ...............................                                  ...............................................................  .......................................................         
+ 76: 31 63 63 ...............................                                  ...............................................................  ............................................................... 
+ 77: 31 55 63 ...............................                                  .......................................................          ............................................................... 
+ 78: 31 47 63 ...............................                                  ...............................................                  ............................................................... 
+ 79: 31 39 63 ...............................                                  .......................................                          ............................................................... 
+
+ # Cycle 2
+ 80: 45 45 63 .............................................                    .............................................                    ............................................................... 
+ 81: 49 45 63 .................................................                .............................................                    ............................................................... 
+ 82: 54 45 63 ......................................................           .............................................                    ............................................................... 
+ 83: 58 45 63 ..........................................................       .............................................                    ............................................................... 
+ 84: 63 45 63 ...............................................................  .............................................                    ............................................................... 
+ 85: 63 45 58 ...............................................................  .............................................                    ..........................................................      
+ 86: 63 45 54 ...............................................................  .............................................                    ......................................................          
+ 87: 63 45 49 ...............................................................  .............................................                    .................................................               
+ 88: 63 45 45 ...............................................................  .............................................                    .............................................                   
+ 89: 63 49 45 ...............................................................  .................................................                .............................................                   
+ 90: 63 54 45 ...............................................................  ......................................................           .............................................                   
+ 91: 63 58 45 ...............................................................  ..........................................................       .............................................                   
+ 92: 63 63 45 ...............................................................  ...............................................................  .............................................                   
+ 93: 58 63 45 ..........................................................       ...............................................................  .............................................                   
+ 94: 54 63 45 ......................................................           ...............................................................  .............................................                   
+ 95: 49 63 45 .................................................                ...............................................................  .............................................                   
+ 96: 45 63 45 .............................................                    ...............................................................  .............................................                   
+ 97: 45 63 49 .............................................                    ...............................................................  .................................................               
+ 98: 45 63 54 .............................................                    ...............................................................  ......................................................          
+ 99: 45 63 58 .............................................                    ...............................................................  ..........................................................      
+100: 45 63 63 .............................................                    ...............................................................  ............................................................... 
+101: 45 58 63 .............................................                    ..........................................................       ............................................................... 
+102: 45 54 63 .............................................                    ......................................................           ............................................................... 
+103: 45 49 63 .............................................                    .................................................                ............................................................... 
+
+# Cycle 3
+104:  0  0 28                                                                                                                                   ............................                                    
+105:  7  0 28 .......                                                                                                                           ............................                                    
+106: 14  0 28 ..............                                                                                                                    ............................                                    
+107: 21  0 28 .....................                                                                                                             ............................                                    
+108: 28  0 28 ............................                                                                                                      ............................                                    
+109: 28  0 21 ............................                                                                                                      .....................                                           
+110: 28  0 14 ............................                                                                                                      ..............                                                  
+111: 28  0  7 ............................                                                                                                      .......                                                         
+112: 28  0  0 ............................                                                                                                                                                                      
+113: 28  7  0 ............................                                     .......                                                                                                                          
+114: 28 14  0 ............................                                     ..............                                                                                                                   
+115: 28 21  0 ............................                                     .....................                                                                                                            
+116: 28 28  0 ............................                                     ............................                                                                                                     
+117: 21 28  0 .....................                                            ............................                                                                                                     
+118: 14 28  0 ..............                                                   ............................                                                                                                     
+119:  7 28  0 .......                                                          ............................                                                                                                     
+120:  0 28  0                                                                  ............................                                                                                                     
+121:  0 28  7                                                                  ............................                                     .......                                                         
+122:  0 28 14                                                                  ............................                                     ..............                                                  
+123:  0 28 21                                                                  ............................                                     .....................                                           
+124:  0 28 28                                                                  ............................                                     ............................                                    
+125:  0 21 28                                                                  .....................                                            ............................                                    
+126:  0 14 28                                                                  ..............                                                   ............................                                    
+127:  0  7 28                                                                  .......                                                          ............................                                    
+
+# Cycle 4
+128: 14 14 28 ..............                                                   ..............                                                   ............................                                    
+129: 17 14 28 .................                                                ..............                                                   ............................                                    
+130: 21 14 28 .....................                                            ..............                                                   ............................                                    
+131: 24 14 28 ........................                                         ..............                                                   ............................                                    
+132: 28 14 28 ............................                                     ..............                                                   ............................                                    
+133: 28 14 24 ............................                                     ..............                                                   ........................                                        
+134: 28 14 21 ............................                                     ..............                                                   .....................                                           
+135: 28 14 17 ............................                                     ..............                                                   .................                                               
+136: 28 14 14 ............................                                     ..............                                                   ..............                                                  
+137: 28 17 14 ............................                                     .................                                                ..............                                                  
+138: 28 21 14 ............................                                     .....................                                            ..............                                                  
+139: 28 24 14 ............................                                     ........................                                         ..............                                                  
+140: 28 28 14 ............................                                     ............................                                     ..............                                                  
+141: 24 28 14 ........................                                         ............................                                     ..............                                                  
+142: 21 28 14 .....................                                            ............................                                     ..............                                                  
+143: 17 28 14 .................                                                ............................                                     ..............                                                  
+144: 14 28 14 ..............                                                   ............................                                     ..............                                                  
+145: 14 28 17 ..............                                                   ............................                                     .................                                               
+146: 14 28 21 ..............                                                   ............................                                     .....................                                           
+147: 14 28 24 ..............                                                   ............................                                     ........................                                        
+148: 14 28 28 ..............                                                   ............................                                     ............................                                    
+149: 14 24 28 ..............                                                   ........................                                         ............................                                    
+150: 14 21 28 ..............                                                   .....................                                            ............................                                    
+151: 14 17 28 ..............                                                   .................                                                ............................                                    
+
+# Cycle 5
+152: 20 20 28 ....................                                             ....................                                             ............................                                    
+153: 22 20 28 ......................                                           ....................                                             ............................                                    
+154: 24 20 28 ........................                                         ....................                                             ............................                                    
+155: 26 20 28 ..........................                                       ....................                                             ............................                                    
+156: 28 20 28 ............................                                     ....................                                             ............................                                    
+157: 28 20 26 ............................                                     ....................                                             ..........................                                      
+158: 28 20 24 ............................                                     ....................                                             ........................                                        
+159: 28 20 22 ............................                                     ....................                                             ......................                                          
+160: 28 20 20 ............................                                     ....................                                             ....................                                            
+161: 28 22 20 ............................                                     ......................                                           ....................                                            
+162: 28 24 20 ............................                                     ........................                                         ....................                                            
+163: 28 26 20 ............................                                     ..........................                                       ....................                                            
+164: 28 28 20 ............................                                     ............................                                     ....................                                            
+165: 26 28 20 ..........................                                       ............................                                     ....................                                            
+166: 24 28 20 ........................                                         ............................                                     ....................                                            
+167: 22 28 20 ......................                                           ............................                                     ....................                                            
+168: 20 28 20 ....................                                             ............................                                     ....................                                            
+169: 20 28 22 ....................                                             ............................                                     ......................                                          
+170: 20 28 24 ....................                                             ............................                                     ........................                                        
+171: 20 28 26 ....................                                             ............................                                     ..........................                                      
+172: 20 28 28 ....................                                             ............................                                     ............................                                    
+173: 20 26 28 ....................                                             ..........................                                       ............................                                    
+174: 20 24 28 ....................                                             ........................                                         ............................                                    
+175: 20 22 28 ....................                                             ......................                                           ............................                                    
+
+# Cycle 6
+176:  0  0 16                                                                                                                                   ................                                                
+177:  4  0 16 ....                                                                                                                              ................                                                
+178:  8  0 16 ........                                                                                                                          ................                                                
+179: 12  0 16 ............                                                                                                                      ................                                                
+180: 16  0 16 ................                                                                                                                  ................                                                
+181: 16  0 12 ................                                                                                                                  ............                                                    
+182: 16  0  8 ................                                                                                                                  ........                                                        
+183: 16  0  4 ................                                                                                                                  ....                                                            
+184: 16  0  0 ................                                                                                                                                                                                  
+185: 16  4  0 ................                                                 ....                                                                                                                             
+186: 16  8  0 ................                                                 ........                                                                                                                         
+187: 16 12  0 ................                                                 ............                                                                                                                     
+188: 16 16  0 ................                                                 ................                                                                                                                 
+189: 12 16  0 ............                                                     ................                                                                                                                 
+190:  8 16  0 ........                                                         ................                                                                                                                 
+191:  4 16  0 ....                                                             ................                                                                                                                 
+192:  0 16  0                                                                  ................                                                                                                                 
+193:  0 16  4                                                                  ................                                                 ....                                                            
+194:  0 16  8                                                                  ................                                                 ........                                                        
+195:  0 16 12                                                                  ................                                                 ............                                                    
+196:  0 16 16                                                                  ................                                                 ................                                                
+197:  0 12 16                                                                  ............                                                     ................                                                
+198:  0  8 16                                                                  ........                                                         ................                                                
+199:  0  4 16                                                                  ....                                                             ................                                                
+
+# Cycle 7
+200:  8  8 16 ........                                                         ........                                                         ................                                                
+201: 10  8 16 ..........                                                       ........                                                         ................                                                
+202: 12  8 16 ............                                                     ........                                                         ................                                                
+203: 14  8 16 ..............                                                   ........                                                         ................                                                
+204: 16  8 16 ................                                                 ........                                                         ................                                                
+205: 16  8 14 ................                                                 ........                                                         ..............                                                  
+206: 16  8 12 ................                                                 ........                                                         ............                                                    
+207: 16  8 10 ................                                                 ........                                                         ..........                                                      
+208: 16  8  8 ................                                                 ........                                                         ........                                                        
+209: 16 10  8 ................                                                 ..........                                                       ........                                                        
+210: 16 12  8 ................                                                 ............                                                     ........                                                        
+211: 16 14  8 ................                                                 ..............                                                   ........                                                        
+212: 16 16  8 ................                                                 ................                                                 ........                                                        
+213: 14 16  8 ..............                                                   ................                                                 ........                                                        
+214: 12 16  8 ............                                                     ................                                                 ........                                                        
+215: 10 16  8 ..........                                                       ................                                                 ........                                                        
+216:  8 16  8 ........                                                         ................                                                 ........                                                        
+217:  8 16 10 ........                                                         ................                                                 ..........                                                      
+218:  8 16 12 ........                                                         ................                                                 ............                                                    
+219:  8 16 14 ........                                                         ................                                                 ..............                                                  
+220:  8 16 16 ........                                                         ................                                                 ................                                                
+221:  8 14 16 ........                                                         ..............                                                   ................                                                
+222:  8 12 16 ........                                                         ............                                                     ................                                                
+223:  8 10 16 ........                                                         ..........                                                       ................                                                
+
+# Cycle 8
+224: 11 11 16 ...........                                                      ...........                                                      ................                                                
+225: 12 11 16 ............                                                     ...........                                                      ................                                                
+226: 13 11 16 .............                                                    ...........                                                      ................                                                
+227: 15 11 16 ...............                                                  ...........                                                      ................                                                
+228: 16 11 16 ................                                                 ...........                                                      ................                                                
+229: 16 11 15 ................                                                 ...........                                                      ...............                                                 
+230: 16 11 13 ................                                                 ...........                                                      .............                                                   
+231: 16 11 12 ................                                                 ...........                                                      ............                                                    
+232: 16 11 11 ................                                                 ...........                                                      ...........                                                     
+233: 16 12 11 ................                                                 ............                                                     ...........                                                     
+234: 16 13 11 ................                                                 .............                                                    ...........                                                     
+235: 16 15 11 ................                                                 ...............                                                  ...........                                                     
+236: 16 16 11 ................                                                 ................                                                 ...........                                                     
+237: 15 16 11 ...............                                                  ................                                                 ...........                                                     
+238: 13 16 11 .............                                                    ................                                                 ...........                                                     
+239: 12 16 11 ............                                                     ................                                                 ...........                                                     
+240: 11 16 11 ...........                                                      ................                                                 ...........                                                     
+241: 11 16 12 ...........                                                      ................                                                 ............                                                    
+242: 11 16 13 ...........                                                      ................                                                 .............                                                   
+243: 11 16 15 ...........                                                      ................                                                 ...............                                                 
+244: 11 16 16 ...........                                                      ................                                                 ................                                                
+245: 11 15 16 ...........                                                      ...............                                                  ................                                                
+246: 11 13 16 ...........                                                      .............                                                    ................                                                
+247: 11 12 16 ...........                                                      ............                                                     ................                                                
+
+# Black
+248:  0  0  0                                                                                                                                                                                                   
+249:  0  0  0                                                                                                                                                                                                   
+250:  0  0  0                                                                                                                                                                                                   
+251:  0  0  0                                                                                                                                                                                                   
+252:  0  0  0                                                                                                                                                                                                   
+253:  0  0  0                                                                                                                                                                                                   
+254:  0  0  0                                                                                                                                                                                                   
+255:  0  0  0                                                                                                                                                                                                   
+
+# vim:listchars=:nowrap
diff --git a/baremetal/vga_palette.c b/baremetal/vga_palette.c
new file mode 100644
index 00000000..11a440ce
--- /dev/null
+++ b/baremetal/vga_palette.c
@@ -0,0 +1,168 @@
+/* Visualize the standard VGA palette.
+ * Based on https://github.com/canidlogic/vgapal (MIT License) */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+char* bar(int n) {
+  char* result = calloc(65, 1);
+  int i;
+  for (i = 0; i < n; ++i)
+    result[i] = '.';
+  for (; i < 64; ++i)
+    result[i] = ' ';
+  result[64] = '\0';
+  return result;
+}
+
+void addColor(int r, int g, int b) {
+  static int i = 0;
+//?   printf("%02x %02x %02x\n", r, g, b);
+  printf("%3d: %2d %2d %2d %s %s %s\n", i, r, g, b, bar(r), bar(g), bar(b));
+  ++i;
+}
+
+void addGrayColor(int v) {
+  addColor(v, v, v);
+}
+
+void add16Color(int lo, int melo, int mehi, int hi) {
+  int r, g, b, i, h, l;
+
+  for (i = 0; i < 8; i++) {
+    r = g = b = lo;
+    if (i & 4) r = mehi;
+    if (i & 2) g = (i==6)?melo:mehi;  /* exception: color 6 is brown rather than dark yellow */
+    if (i & 1) b = mehi;
+    addColor(r, g, b);
+  }
+
+  for (i = 0; i < 8; i++) {
+    r = g = b = melo;
+    if (i & 4) r = hi;
+    if (i & 2) g = hi;
+    if (i & 1) b = hi;
+    addColor(r, g, b);
+  }
+}
+
+/* Add four colors to the palette corresponding to a "run" within an RGB cycle.
+ *
+ * start - high and low starting states for each channel at the start of the run
+ * ch - the channel to change from high to low or low to high */
+void addRun(int start, int ch, int lo, int melo, int me, int mehi, int hi) {
+  int r, g, b, i, up;
+
+  /* Check parameters */
+  if (start < 0 || start > 7)
+    abort();
+  if (ch != 1 && ch != 2 && ch != 4)
+    abort();
+
+  /* Get the starting RGB color and add it */
+  r = lo;
+  g = lo;
+  b = lo;
+  if ((start & 4) == 4)
+    r = hi;
+  if ((start & 2) == 2)
+    g = hi;
+  if ((start & 1) == 1)
+    b = hi;
+  addColor(r, g, b);
+
+  /* If selected channel starts high, we're going down; otherwise we're going up */
+  up = (start & ch) != ch;
+
+  /* Add remaining three colors of the run */
+  switch (ch) {
+  case 4:  r = up?melo:mehi; break;
+  case 2:  g = up?melo:mehi; break;
+  case 1:  b = up?melo:mehi; break;
+  }
+  addColor(r, g, b);
+
+  switch (ch) {
+  case 4:  r = me; break;
+  case 2:  g = me; break;
+  case 1:  b = me; break;
+  }
+  addColor(r, g, b);
+
+  switch (ch) {
+  case 4:  r = up?mehi:melo; break;
+  case 2:  g = up?mehi:melo; break;
+  case 1:  b = up?mehi:melo; break;
+  }
+  addColor(r, g, b);
+}
+
+/* A cycle consists of six 4-color runs, each of which transitions from
+ * one hue to another until arriving back at starting position. */
+void addCycle(int lo, int melo, int me, int mehi, int hi) {
+  int hue = 1;  /* blue */
+  addRun(hue, 4, lo, melo, me, mehi, hi);
+  hue ^= 4;
+  assert(hue == 5);
+  addRun(hue, 1, lo, melo, me, mehi, hi);
+  hue ^= 1;
+  assert(hue == 4);
+  addRun(hue, 2, lo, melo, me, mehi, hi);
+  hue ^= 2;
+  assert(hue == 6);
+  addRun(hue, 4, lo, melo, me, mehi, hi);
+  hue ^= 4;
+  assert(hue == 2);
+  addRun(hue, 1, lo, melo, me, mehi, hi);
+  hue ^= 1;
+  assert(hue == 3);
+  addRun(hue, 2, lo, melo, me, mehi, hi);
+}
+
+int main(void) {
+  int i;
+
+  /* 16-color palette */
+  add16Color(0, 21, 42, 63);
+
+  /* 16 shades of gray */
+  addGrayColor( 0);
+  addGrayColor( 5);
+  addGrayColor( 8);
+  addGrayColor(11);
+  addGrayColor(14);
+  addGrayColor(17);
+  addGrayColor(20);
+  addGrayColor(24);
+  addGrayColor(28);
+  addGrayColor(32);
+  addGrayColor(36);
+  addGrayColor(40);
+  addGrayColor(45);
+  addGrayColor(50);
+  addGrayColor(56);
+  addGrayColor(63);
+
+  /* Nine RGB cycles organized in three groups of three cycles,
+   * The groups represent high/medium/low value,
+   * and the cycles within the groups represent high/medium/low saturation. */
+  addCycle( 0, 16, 31, 47, 63);
+  addCycle(31, 39, 47, 55, 63);
+  addCycle(45, 49, 54, 58, 63);
+
+  addCycle( 0,  7, 14, 21, 28);
+  addCycle(14, 17, 21, 24, 28);
+  addCycle(20, 22, 24, 26, 28);
+
+  addCycle( 0,  4,  8, 12, 16);
+  addCycle( 8, 10, 12, 14, 16);
+  addCycle(11, 12, 13, 15, 16);
+
+  /* final eight palette entries are full black */
+  for (i = 0; i < 8; ++i)
+    addGrayColor(0);
+
+  return 0;
+}
diff --git a/baremetal/vga_palette.png b/baremetal/vga_palette.png
new file mode 100644
index 00000000..cea46962
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