diff --git a/consts.c b/consts.c
index ce16cb4..ae8797c 100644
--- a/consts.c
+++ b/consts.c
@@ -1,6 +1,6 @@
 #ifndef CONSTS
 #define CONSTS
-#define VERSION 6
+#define VERSION 7
 
 #endif /* ifndef CONSTS
 #define CONSTS
diff --git a/njvm.c b/njvm.c
index c68f026..c9b5faa 100644
--- a/njvm.c
+++ b/njvm.c
@@ -40,6 +40,8 @@ void execute(struct program program) {
     char charInput;
     StackSlot tempSlot;
     ObjRef tempObj;
+    ObjRef tempObj2;
+    int tempInt;
     for (i = 0; i < *program.size; ++i) {
         if (debug == 1) debugMenu(fp, stack, &debug, i);
         switch (program.program[i] >> 24) {
@@ -100,7 +102,8 @@ void execute(struct program program) {
             case RDCHR:
                 if (debug == 1) printf("rdchr\n");
                 scanf("%c", &charInput);
-                push(stack, stackSlotWithObjRef(getIntObj(charInput)));
+                bigFromInt(charInput);
+                push(stack, stackSlotWithObjRef(bip.res));
                 if (debug == 1) printf("pushed %c\n", charInput);
                 break;
             case WRCHR:
@@ -247,12 +250,61 @@ void execute(struct program program) {
                 break;
             case GETF:
                 if (debug == 1) printf("getf");
-                push(stack, stackSlotWithObjRef(getField(pop(stack).u.objRef,SIGN_EXTEND(IMMEDIATE(program.program[i])))));
+                tempObj = pop(stack).u.objRef;
+                if (SIGN_EXTEND(IMMEDIATE(program.program[i])) < 0 || SIGN_EXTEND(IMMEDIATE(program.program[i])) > GET_ELEMENT_COUNT(tempObj)) exit(1);
+                push(stack, stackSlotWithObjRef(getField(tempObj,SIGN_EXTEND(IMMEDIATE(program.program[i])))));
                 break;
             case PUTF:
                 if (debug == 1) printf("putf");
                 tempObj = pop(stack).u.objRef;
-                setField(pop(stack).u.objRef, SIGN_EXTEND(IMMEDIATE(program.program[i])),tempObj);
+                tempObj2 = pop(stack).u.objRef;
+                if (SIGN_EXTEND(IMMEDIATE(program.program[i])) < 0 || SIGN_EXTEND(IMMEDIATE(program.program[i])) > GET_ELEMENT_COUNT(tempObj2)) exit(1);
+                setField(tempObj2, SIGN_EXTEND(IMMEDIATE(program.program[i])),tempObj);
+                break;
+            case NEWA:
+                if(debug == 1) printf("newa");
+                bip.op1 = pop(stack).u.objRef;
+                push(stack, stackSlotWithObjRef(newRecord(bigToInt())));
+                break;
+            case GETFA:
+                if(debug == 1) printf("getfa");
+                bip.op1 = pop(stack).u.objRef;
+                tempInt = bigToInt();
+                tempObj = pop(stack).u.objRef;
+                if (tempInt < 0 || tempInt > GET_ELEMENT_COUNT(tempObj)) exit(1);
+                push(stack, stackSlotWithObjRef(getField(tempObj,bigToInt())));
+                break;
+            case PUTFA:
+                if (debug == 1) printf("putfa");
+                tempObj = pop(stack).u.objRef;
+                tempObj2 = pop(stack).u.objRef;
+                bip.op1 = pop(stack).u.objRef;
+                tempInt = bigToInt();
+                if (tempInt < 0 || tempInt > GET_ELEMENT_COUNT(tempObj2)) exit(1);
+                setField(tempObj2, tempInt,tempObj);
+                break;
+            case GETSZ:
+                if (debug == 1) printf("getsz");
+                tempObj = pop(stack).u.objRef;
+                if(IS_PRIMITIVE(tempObj))  bigFromInt(-1);
+                else bigFromInt(GET_ELEMENT_COUNT(tempObj));
+                push(stack, stackSlotWithObjRef(bip.res));
+                break;
+            case PUSHN:
+                if (debug == 1) printf("pushn");
+                push(stack, stackSlotWithObjRef(NULL));
+                break;
+            case REFEQ:
+                if (debug == 1) printf("refeq");
+                if(pop(stack).u.objRef == pop(stack).u.objRef) bigFromInt(true);
+                else bigFromInt(false);
+                push(stack, stackSlotWithObjRef(bip.res));
+                break;
+            case REFNE:
+                if (debug == 1) printf("refeq");
+                if(pop(stack).u.objRef != pop(stack).u.objRef) bigFromInt(true);
+                else bigFromInt(false);
+                push(stack, stackSlotWithObjRef(bip.res));
                 break;
         }
     }
diff --git a/njvm.o b/njvm.o
index 3005402..2cee315 100644
Binary files a/njvm.o and b/njvm.o differ
diff --git a/prog.bin b/prog.bin
index da3fc02..a7d3220 100644
Binary files a/prog.bin and b/prog.bin differ
diff --git a/test.asm b/test.asm
index cd43d4a..9eb4224 100644
--- a/test.asm
+++ b/test.asm
@@ -152,4 +152,4 @@ _main:
 	drop	1
 __0:
 	rsf
-	ret
\ No newline at end of file
+	ret