diff --git a/gui.c b/gui.c
index 835f0ec..d6eca83 100644
--- a/gui.c
+++ b/gui.c
@@ -25,6 +25,7 @@ int terminal_width;
 int terminal_height;
 
 WINDOW *tabs;
+WINDOW *general_memdump;
 
 int monochrome;
 
@@ -42,21 +43,24 @@ int gui_ncurses_refresh(){
 		return 1;
 	if(wrefresh(tabs)==ERR)
 		return 1;
+	if(wrefresh(general_memdump)==ERR)
+		return 1;
 	return 0;
 }
 
-char *tab_name[]={"Overview","Memory","Test"};
+char *tab_name[]={"Overview","Memory","Internal"};
 
 unsigned int CURRENT_TAB=0;
 
-enum CPU_STATE_t CPU_STATE=STOPPED;
+enum CPU_STATE_t CPU_STATE=SINGLE_STEPPING;
+//enum CPU_STATE_t CPU_STATE=STOPPED;
 
 void update_tabs(){
 	wattron(tabs,COLOR_PAIR(2));
 	for(int i=0;i<terminal_width;i++)
-		wprintw(tabs," ");
+		mvwprintw(tabs,0,i," ");
 
-	int x=1;
+	int x=2;
 	for(unsigned int i=0;i<sizeof(tab_name)/sizeof(tab_name[0]);i++){
 		if(i==CURRENT_TAB)
 			wattron(tabs,COLOR_PAIR(4));
@@ -113,6 +117,7 @@ int start_gui(){
 	mvprintw((terminal_height-3)/2+3,terminal_width/2-15,"Initialising the simulator...");
 	tabs = newwin(1,terminal_width,0,0);
 	update_tabs();
+	general_memdump=newwin(terminal_height*0.8,terminal_width/2,4,5);
 	if(gui_ncurses_refresh())
 		return 1;
 	return 0;
@@ -134,6 +139,41 @@ int gui_error(char *str){
 		wattroff(error_win,COLOR_PAIR(1));
 }
 
+int update_general_memdump(struct simdata_t *simdata){
+	int width,height;
+	getmaxyx(general_memdump,height,width);
+	box(general_memdump, 0 , 0);
+	mvwprintw(general_memdump,0,terminal_width/4-6,"[ MEMDUMP ]");
+	if(width<16){
+		mvwprintw(general_memdump,1,1,"too small window");
+	}else{
+		int n=(width-12)/4;
+		uint32_t ADDRESS=0;
+		for(int h=0;h<height-3;h++){
+			wmove(general_memdump,h+2,2+(width-12)%2);
+			wprintw(general_memdump,"%06x  ",ADDRESS);
+			uint32_t temp_address=ADDRESS;
+			for (int i=0;i<n;i++)
+				wprintw(general_memdump,"%02x ",simdata->RAM[temp_address++]);
+			for (int i=0;i<n;i++){
+				wprintw(general_memdump,"%c",(simdata->RAM[ADDRESS]>=0x20&&simdata->RAM[ADDRESS]<0x7F)?simdata->RAM[ADDRESS]:'.');
+				ADDRESS++;
+			}
+		}
+	}
+	return 0;
+}
+
+int update_gui(struct simdata_t *simdata){
+	clear();
+	update_tabs();
+	if(update_general_memdump(simdata))
+		return 1;
+	if(gui_ncurses_refresh())
+		return 1;
+	return 0;
+}
+
 int gui_continue_request(){
 	if(getch()==ERR)
 		return 1;
diff --git a/gui.h b/gui.h
index 7a8f5d1..8ace09c 100644
--- a/gui.h
+++ b/gui.h
@@ -1,4 +1,7 @@
+#include "simdata.h"
+
 int start_gui();
 int gui_continue_request();
 int end_gui();
 int gui_error(char *);
+int update_gui(struct simdata_t *);
diff --git a/main.c b/main.c
index f088a07..cc249a7 100644
--- a/main.c
+++ b/main.c
@@ -21,7 +21,6 @@
 #include <stdlib.h>
 #include "gui.h"
 #include "simdata.h"
-#include "stdint.h"
 #include <unistd.h>
 #include <errno.h>
 
@@ -69,14 +68,14 @@ int main(int argc, char* argd[] ){
 	}
 	fseek(rom, 0, SEEK_SET);
 
-	uint8_t *RAM=malloc(16777216); //Maximum addressable memory
-	if(!RAM){
-		gui_error("failed to allocate 16MiB of memory for the system ram");
+	struct simdata_t *simdata = init_simdata();
+	if(!simdata){
+		gui_error("failed to initialise simdata");
 		return 1;
 	}
-	if(fread(RAM, 16777216, 1, rom)==0){
+	if(fread(simdata->RAM, 16777216, 1, rom)==0){
 		printf("ERROR: failed to read input file\n");
-		free(RAM);
+		free_simdata(simdata);
 		return 1;
 	}
 	fclose(rom);
@@ -85,33 +84,25 @@ int main(int argc, char* argd[] ){
 	/// INITIALISE GUI ///
 	if(start_gui()){
 		printf("Failed on start_gui()\n");
-		free(RAM);
+		free_simdata(simdata);
 		return 1;
 	}
 
-	struct simdata_t *simdata = init_simdata();
-	if(!simdata){
-		gui_error("failed to initialise simdata");
-		free(RAM);
-		return 1;
-	}
+	update_gui(simdata);
 
 	if(gui_continue_request()){
 		end_gui();
 		printf("Failed on gui_continue_request()\n");
 		free_simdata(simdata);
-		free(RAM);
 		return 1;
 	}
 
 	if(end_gui()){
 		printf("Failed on end_gui()\n");
 		free_simdata(simdata);
-		free(RAM);
 		return 1;
 	}
 
 	free_simdata(simdata);
-	free(RAM);
 	return 0;
 }
diff --git a/simdata.c b/simdata.c
index 7a147c4..01f6f44 100644
--- a/simdata.c
+++ b/simdata.c
@@ -19,15 +19,27 @@
 
 #include <stdlib.h>
 #include "simdata.h"
+#include <stdio.h>
 
 struct simdata_t *init_simdata(){
 	struct simdata_t * ret=malloc(sizeof(struct simdata_t));
-	if(ret){
+
+	if(!ret){
 		ret->current_clock=0;
+		return 0;
 	}
+
+	ret->RAM=malloc(16777216); //Maximum addressable memory
+	if(!ret->RAM){
+		printf("failed to allocate 16MiB of memory for the system ram");
+		free(ret);
+		return 0;
+	}
+
 	return ret;
 }
 
 void free_simdata(struct simdata_t *p){
+	free(p->RAM);
 	free(p);
 }
diff --git a/simdata.h b/simdata.h
index 7037009..d4d7439 100644
--- a/simdata.h
+++ b/simdata.h
@@ -1,6 +1,11 @@
+#ifndef SIMDATA_HEADER
+#include <stdint.h>
+
 struct simdata_t{
 	long unsigned int current_clock;
+	uint8_t *RAM;
 };
+
 struct simdata_t *init_simdata();
 
 void free_simdata(struct simdata_t *);
@@ -10,3 +15,5 @@ enum CPU_STATE_t{
 	SINGLE_STEPPING,
 	STOPPED
 };
+#endif
+#define SIMDATA_HEADER