diff --git a/debug.c b/debug.c
index 4e1d37a..7b823cd 100644
--- a/debug.c
+++ b/debug.c
@@ -161,7 +161,7 @@ void translate_args(uint16_t a1, uint16_t a2, uint16_t a3, char *arg1, char *arg
     }
     else
     {
-        sprintf(arg1,"%d",a1);
+        sprintf(arg1,"%02X",a1);
     }
     
     if(a2 > MAX_INT)
@@ -170,7 +170,7 @@ void translate_args(uint16_t a1, uint16_t a2, uint16_t a3, char *arg1, char *arg
     }
     else
     {
-        sprintf(arg2,"%d",a2);
+        sprintf(arg2,"%02X",a2);
     }
     
     if(a3 > MAX_INT)
@@ -179,7 +179,7 @@ void translate_args(uint16_t a1, uint16_t a2, uint16_t a3, char *arg1, char *arg
     }
     else
     {
-        sprintf(arg3,"%d",a3);
+        sprintf(arg3,"%02X",a3);
     }
     
 }
@@ -193,64 +193,71 @@ void print_instruction(uint16_t opcode, uint16_t a1, uint16_t a2, uint16_t a3)
     switch(opcode)
     {
         case HALT:
-            fprintf(stderr,"HALT\n");
+            fprintf(stderr, "HALT\n");
             break;
         case MOV:
-            fprintf(stderr,"MOV %s %s\n",arg1,arg2);
+            fprintf(stderr, "MOV %s %s\n", arg1, arg2);
             break;
         case PUSH:
-            fprintf(stderr,"PUSH %s\n",arg1);
+            fprintf(stderr, "PUSH %s\n", arg1);
             break;
         case POP:
-            fprintf(stderr,"POP %s\n",arg1);
+            fprintf(stderr, "POP %s\n", arg1);
             break;
         case TEQ:
-            fprintf(stderr,"TEQ %s %s %s\n",arg1,arg2,arg3);
+            fprintf(stderr, "TEQ %s %s %s\n", arg1, arg2, arg3);
             break;
         case TGT:
-            fprintf(stderr,"TGT %s %s %s\n",arg1,arg2,arg3);
+            fprintf(stderr, "TGT %s %s %s\n", arg1, arg2, arg3);
             break;
         case JMP:
-            fprintf(stderr,"JMP %s\n",arg1);
+            fprintf(stderr, "JMP %s\n", arg1);
             break;
         case JNZ:
-            fprintf(stderr,"JNZ %s %s\n",arg1,arg2);
+            fprintf(stderr, "JNZ %s %s\n", arg1, arg2);
             break;
         case JZ:
-            fprintf(stderr,"JZ %s %s\n",arg1,arg2);
+            fprintf(stderr, "JZ %s %s\n", arg1, arg2);
             break;
         case ADD:
-            fprintf(stderr,"ADD %s %s %s\n",arg1,arg2,arg3);
+            fprintf(stderr, "ADD %s %s %s\n", arg1, arg2, arg3);
             break;
         case MUL:
-            fprintf(stderr,"MUL %s %s %s\n",arg1,arg2,arg3);
+            fprintf(stderr, "MUL %s %s %s\n", arg1, arg2, arg3);
             break;
         case MOD:
-            fprintf(stderr,"MOD %s %s %s\n",arg1,arg2,arg3);
+            fprintf(stderr, "MOD %s %s %s\n", arg1, arg2, arg3);
             break;
         case AND:
-            fprintf(stderr,"AND %s %s %s\n",arg1,arg2,arg3);
+            fprintf(stderr, "AND %s %s %s\n", arg1, arg2, arg3);
             break;
         case OR:
-            fprintf(stderr,"OR %s %s %s\n",arg1,arg2,arg3);
+            fprintf(stderr, "OR %s %s %s\n", arg1, arg2, arg3);
             break;
         case NOT:
-            fprintf(stderr,"NOT %s %s\n",arg1,arg2);
+            fprintf(stderr, "NOT %s %s\n", arg1, arg2);
             break;
         case LOAD:
-            fprintf(stderr,"LOAD %s %s\n",arg1,arg2);
+            fprintf(stderr, "LOAD %s %s\n", arg1, arg2);
             break;
         case STOR:
-            fprintf(stderr,"STOR %s %s\n",arg1,arg2);
+            fprintf(stderr, "STOR %s %s\n", arg1, arg2);
             break;
         case CALL:
-            fprintf(stderr,"CALL %s\n",arg1);
+            fprintf(stderr, "CALL %s\n", arg1);
             break;
         case RET:
-            fprintf(stderr,"RET\n");
+            fprintf(stderr, "RET\n");
             break;
         case OUT:
-            fprintf(stderr,"OUT %s\n",arg1);
+            if (a1 <= MAX_INT)
+            {
+                fprintf(stderr, "OUT '%c'\n",a1);
+            }
+            else
+            {
+                fprintf(stderr, "OUT %s\n", arg1);
+            }
             break;
         case IN:
             fprintf(stderr,"IN %s\n",arg1);
@@ -259,7 +266,7 @@ void print_instruction(uint16_t opcode, uint16_t a1, uint16_t a2, uint16_t a3)
             fprintf(stderr,"NOP\n");
             break;
         default:
-            fprintf(stderr,"UNK %d\n", opcode);
+            fprintf(stderr,"UNK %02X\n", opcode);
             break;
     }
 }
@@ -273,10 +280,15 @@ void debug_program()
     uint16_t arg3;
     for(;;)
     {
+        if(in_breakpoint(pc))
+        {
+            breakpoint = 1;
+            fprintf(stderr,"Breakpoint hit @ pc=%02X",pc);
+        }
         if(in_breakpoint(pc) || breakpoint)
         {
             breakpoint = 1;
-            fprintf(stderr, "%d: ", pc);
+            fprintf(stderr, "%02X: ", pc);
             print_instruction(mem[pc], mem[pc+1], mem[pc+2], mem[pc+3]);
             query();
         }
diff --git a/disasm.c b/disasm.c
index 03b255d..c389c51 100644
--- a/disasm.c
+++ b/disasm.c
@@ -11,7 +11,7 @@ void disassemble_program(uint32_t length)
         {
             break;
         }
-        fprintf(stderr,"%d: ",pc);
+        fprintf(stderr,"%02X: ",pc);
         uint16_t opcode = fetch();
         decode_instruction(opcode,&arg1,&arg2,&arg3);
         print_instruction(opcode,arg1,arg2,arg3);
diff --git a/registers.c b/registers.c
index fc6a595..71d972b 100644
--- a/registers.c
+++ b/registers.c
@@ -11,15 +11,15 @@ uint16_t pc = 0;
 
 void print_regs()
 {
-    fprintf(stderr,"r0: %2x\n",regs[0]);
-    fprintf(stderr,"r1: %2x\n",regs[1]);
-    fprintf(stderr,"r2: %2x\n",regs[2]);
-    fprintf(stderr,"r3: %2x\n",regs[3]);
-    fprintf(stderr,"r4: %2x\n",regs[4]);
-    fprintf(stderr,"r5: %2x\n",regs[5]);
-    fprintf(stderr,"r6: %2x\n",regs[6]);
-    fprintf(stderr,"r7: %2x\n",regs[7]);
-    fprintf(stderr,"pc: %2x\n",pc);
+    fprintf(stderr,"r0: %02X\n",regs[0]);
+    fprintf(stderr,"r1: %02X\n",regs[1]);
+    fprintf(stderr,"r2: %02X\n",regs[2]);
+    fprintf(stderr,"r3: %02X\n",regs[3]);
+    fprintf(stderr,"r4: %02X\n",regs[4]);
+    fprintf(stderr,"r5: %02X\n",regs[5]);
+    fprintf(stderr,"r6: %02X\n",regs[6]);
+    fprintf(stderr,"r7: %02X\n",regs[7]);
+    fprintf(stderr,"pc: %02X\n",pc);
 }
 
 void dump_regs(uint16_t *dump)