diff --git a/README.md b/README.md
index be9859a..d41d4ff 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ The bedroom Z80 is a Z80-based microcomputer with an advanced I/O system, boot s
 
 - It will be able to recognise a signifigant number of I/O devices. One recognised, the I/O device will be assigned an area of I/O space, and a driver will be loaded to communicate with the device. There are 2 64k I/O areas, one is used for general I/O and the other is used to access the 64k of VRAM.
 
-- The graphics system will be more advanced than most homebrew computer projects. It will have a custom TTL logic graphics card that will be able to display 320x200 in 256 colours, or 640x400 in 4 shades of grey over VGA. Possible other modes include 320x400 or 640x200 in 16 colours, from the 256 colour palette. These graphics modes all fit in 64k of VRAM.
+- The graphics system will be more advanced than most homebrew computer projects. It will have a custom TTL logic graphics card that will be able to display 320x200 in 256 colours, or 640x400 in 4 shades of grey over VGA. Possible other modes include 320x400 or 640x200 in 16 colours, from the 256 colour palette. These graphics modes all fit in 64k of VRAM, which has a hardware double buffer.
 
 ### Todo: