diff --git a/doc/config.rst b/doc/config.rst
index 89e1d4f..efc2d4d 100644
--- a/doc/config.rst
+++ b/doc/config.rst
@@ -10,8 +10,8 @@ Registers
 Register        Address
 =============== =============
 CONFIG          BASE_IO + 36
-FB_ADDR         BASE_IO + 44
-VSYNC           BASE_IO + 48
+FB_ADDR         BASE_IO + 40
+VSYNC           BASE_IO + 44
 =============== =============
 
 CONFIG
diff --git a/doc/index.rst b/doc/index.rst
index acea1ac..fca6a6f 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -16,8 +16,6 @@ Graphite System
    led.rst
    uart.rst
    sd_card.rst
-   keyboard.rst
-   mouse.rst
    graphite.rst
    config.rst
 
diff --git a/doc/keyboard.rst b/doc/keyboard.rst
deleted file mode 100644
index 9bb0919..0000000
--- a/doc/keyboard.rst
+++ /dev/null
@@ -1,40 +0,0 @@
-Keyboard
-========
-
-PS/2 keyboard.
-
-Registers
----------
-
-=============== =============
-Register        Address
-=============== =============
-KEYBOARD_STATUS BASE_IO + 24
-KEYBOARD_DATA   BASE_IO + 28
-=============== =============
-
-KEYBOARD_STATUS
-^^^^^^^^^^^^^^^
-
-Read:
-
-===== ============================
-Field Description
-===== ============================
-[28]  Key available? 
-===== ============================
-
-Write: -
-
-KEYBOARD_DATA
-^^^^^^^^^^^^^
-
-Read:
-
-====== ============================
-Field  Description
-====== ============================
-[7:0]  Character
-====== ============================
-
-Write: -
diff --git a/doc/memory_map.rst b/doc/memory_map.rst
index e9c415c..4ede1e7 100644
--- a/doc/memory_map.rst
+++ b/doc/memory_map.rst
@@ -18,9 +18,9 @@ CLOCK               BASE_IO + 0
 LED                 BASE_IO + 4
 UART                BASE_IO + 8
 SD_CARD             BASE_IO + 16
-KEYBOARD            BASE_IO + 24
 GRAPHITE            BASE_IO + 32
-CONFIG              BASE_IO + 36
-MOUSE               BASE_IO + 40
-CONFIG (2)          BASE_IO + 44
+CONFIG (1)          BASE_IO + 36
+CONFIG (2)          BASE_IO + 40
+CONFIG (3)          BASE_IO + 44
+USB                 BASE_IO + 64
 ==================  ===============
diff --git a/doc/mouse.rst b/doc/mouse.rst
deleted file mode 100644
index 18a6b97..0000000
--- a/doc/mouse.rst
+++ /dev/null
@@ -1,45 +0,0 @@
-Mouse
-=====
-
-PS/2 mouse.
-
-Registers
----------
-
-=============== =============
-Register        Address
-=============== =============
-MOUSE_STATUS    BASE_IO + 40
-MOUSE_DATA      BASE_IO + 44
-=============== =============
-
-MOUSE_STATUS
-^^^^^^^^^^^^
-
-Read:
-
-===== ============================
-Field Description
-===== ============================
-[28]  Mouse event available? 
-===== ============================
-
-Write: -
-
-MOUSE_DATA
-^^^^^^^^^^
-
-Read:
-
-======= ============================
-Field   Description
-======= ============================
-[7:0]   Delta Z
-[15:8]  Delta Y
-[23:16] Delta X
-[24]    Left button pressed?
-[25]    Right button pressed?
-[26]    Middle button pressed?
-======= ============================
-
-Write: -
diff --git a/soc/rtl/soc_top.sv b/soc/rtl/soc_top.sv
index 46578bf..8b96a39 100644
--- a/soc/rtl/soc_top.sv
+++ b/soc/rtl/soc_top.sv
@@ -425,7 +425,8 @@ module soc_top #(
         (iowadr == 7) ? {32'b0} :
         (iowadr == 8) ? {31'b0, graphite_cmd_axis_tready} :
         (iowadr == 9) ? {16'(H_RES), 16'(V_RES)} :
-        (iowadr == 12) ? fb_addr :
+        (iowadr == 10) ? fb_addr :
+        (iowadr == 11) ? {31'b0, vga_vsync} :
         (iowadr >= 16 && iowadr < 32) ? sie_di : 32'd0);
 
     assign dataTx = outbus[7:0];
@@ -471,7 +472,7 @@ module soc_top #(
                 end else if (iowadr == 9) begin
                     if (outbus[0])
                         req_flush_cache <= 1'b1;
-                end else if (iowadr == 12) begin
+                end else if (iowadr == 10) begin
                     fb_addr <= outbus[31:0];
                     use_graphite_front_addr <= 1'b0;
                 end