diff --git a/kernel/boot/k_bootstrap.cc b/kernel/boot/k_bootstrap.cc
index 2820ecc..a33344a 100644
--- a/kernel/boot/k_bootstrap.cc
+++ b/kernel/boot/k_bootstrap.cc
@@ -4,8 +4,10 @@
 #include "multiboot.h"
 #include "k_early_panic.h"
 #include "mm/mm.h"
+#include "lang/kio.h"
 
-#define DEBUG_LETTER(col,chr) *(u16_t *)(CONSOLE_MEMORY + 160 * 8 + (col) * 2) \
+#define DEBUG_LETTER(col,chr) *(u16_t *)(KERNEL_OFFSET + CONSOLE_MEMORY \
+                                  + 160 * 8 + (col) * 2) \
                                   = 0x0700 | (chr)
 extern "C" {
 
@@ -44,6 +46,7 @@ u32_t k_bootstrap(mb_info_t * mb_info, u32_t mb_magic)
      * before calling them.
      */
     mm_bootstrap();
+    kio_bootstrap();
 
     return 0;
 }
diff --git a/kernel/boot/k_early_panic.c b/kernel/boot/k_early_panic.c
index 273f8c1..ada7f05 100644
--- a/kernel/boot/k_early_panic.c
+++ b/kernel/boot/k_early_panic.c
@@ -5,7 +5,7 @@
 
 void k_early_panic(const char * msg)
 {
-    char * dest = (char *) CONSOLE_MEMORY;
+    char * dest = (char *) (CONSOLE_MEMORY + KERNEL_OFFSET);
     while (*msg)
     {
         *dest++ = *msg++;
diff --git a/kernel/include/hos_defines.h b/kernel/include/hos_defines.h
index e4a4a87..c12f14a 100644
--- a/kernel/include/hos_defines.h
+++ b/kernel/include/hos_defines.h
@@ -15,7 +15,7 @@ extern "C" {
 #define PAGE_HIGH_MASK          (0xFFFFFFFFu << PAGE_LOG_SIZE)
 #define PAGE_LOW_MASK           (0xFFFFFFFFu >> (32 - PAGE_LOG_SIZE))
 
-#define CONSOLE_MEMORY          (KERNEL_OFFSET + 0xB8000)
+#define CONSOLE_MEMORY          0xB8000
 
 extern  u8_t    _code;
 extern  u8_t    _bss;
diff --git a/kernel/lang/kio.cc b/kernel/lang/kio.cc
index d30a9e6..d1d0292 100644
--- a/kernel/lang/kio.cc
+++ b/kernel/lang/kio.cc
@@ -1,4 +1,6 @@
 
+#include "hos_types.h"
+#include "hos_defines.h"
 #include "kio.h"
 #include "string.h"
 
@@ -12,8 +14,16 @@ static void fmt_ull2a(char * buf, unsigned long long val);
 static void fmt_x2a(char * buf, unsigned int val);
 static void fmt_o2a(char * buf, unsigned int val);
 
+static int cursor_x, cursor_y;
+
 extern "C" {
 
+void kio_bootstrap()
+{
+    cursor_x = 0;
+    cursor_y = 8;
+}
+
 void kprintf(char * fmt, ...)
 {
     va_list args;
@@ -81,6 +91,39 @@ void kvprintf(char * fmt, va_list args)
 
 void kputc(char c)
 {
+    u16_t * console_memory = (u16_t *) CONSOLE_MEMORY;
+    console_memory += 80 * cursor_y + cursor_x;
+    switch (c)
+    {
+        case '\t':
+            {
+                int to_advance = 8 - (cursor_x & 0x3);
+                while (to_advance--)
+                {
+                    *console_memory++ = 0x0720;
+                }
+            }
+            break;
+        case '\n':
+            cursor_x = 0;
+            cursor_y++;
+            break;
+        default:
+            *console_memory = 0x0700 | (c & 0xFF);
+            break;
+    }
+    if (cursor_x >= 80)
+    {
+        cursor_x = 0;
+        cursor_y++;
+    }
+    if (cursor_y >= 25)
+    {
+        memcpy((u8_t *) CONSOLE_MEMORY,
+               (u8_t *) (CONSOLE_MEMORY + 80 * 2),
+               2 * 80 * 24);
+        memsetw((u16_t *) (CONSOLE_MEMORY + 2 * 80 * 24), 0x0720, 80);
+    }
 }
 
 void kputs(char * s)
diff --git a/kernel/lang/kio.h b/kernel/lang/kio.h
index 7916f0b..58b4e15 100644
--- a/kernel/lang/kio.h
+++ b/kernel/lang/kio.h
@@ -8,6 +8,8 @@
 extern "C" {
 #endif
 
+void kio_bootstrap();
+
 void kprintf(char * fmt, ...);
 
 void kvprintf(char * fmt, va_list args);
diff --git a/kernel/lang/string.cc b/kernel/lang/string.cc
index 8614fd9..f8e8e5d 100644
--- a/kernel/lang/string.cc
+++ b/kernel/lang/string.cc
@@ -11,4 +11,52 @@ void strcpy(char * dst, const char * src)
     }
 }
 
+void memcpy(u8_t * dst, u8_t * src, u32_t size)
+{
+    for (u32_t n = 0; n < size; n++)
+    {
+        *dst++ = *src++;
+    }
+}
+
+void memcpyw(u16_t * dst, u16_t * src, u32_t size)
+{
+    for (u32_t n = 0; n < size; n++)
+    {
+        *dst++ = *src++;
+    }
+}
+
+void memcpyd(u32_t * dst, u32_t * src, u32_t size)
+{
+    for (u32_t n = 0; n < size; n++)
+    {
+        *dst++ = *src++;
+    }
+}
+
+void memset(u8_t * dst, u8_t val, u32_t size)
+{
+    for (u32_t n = 0; n < size; n++)
+    {
+        *dst++ = val;
+    }
+}
+
+void memsetw(u16_t * dst, u16_t val, u32_t size)
+{
+    for (u32_t n = 0; n < size; n++)
+    {
+        *dst++ = val;
+    }
+}
+
+void memsetd(u32_t * dst, u32_t val, u32_t size)
+{
+    for (u32_t n = 0; n < size; n++)
+    {
+        *dst++ = val;
+    }
+}
+
 } /* extern "C" */
diff --git a/kernel/lang/string.h b/kernel/lang/string.h
index 7505167..758484d 100644
--- a/kernel/lang/string.h
+++ b/kernel/lang/string.h
@@ -2,12 +2,22 @@
 #ifndef STRING_H
 #define STRING_H
 
+#include "hos_defines.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 void strcpy(char * dst, const char * src);
 
+void memcpy(u8_t * dst, u8_t * src, u32_t size);
+void memcpyw(u16_t * dst, u16_t * src, u32_t size);
+void memcpyd(u32_t * dst, u32_t * src, u32_t size);
+
+void memset(u8_t * dst, u8_t val, u32_t size);
+void memsetw(u16_t * dst, u16_t val, u32_t size);
+void memsetd(u32_t * dst, u32_t val, u32_t size);
+
 #ifdef __cplusplus
 }
 #endif