diff --git a/configs/sim/nx/defconfig b/configs/sim/nx/defconfig
index 7bc09bfe257d181245b21e5e31d82e62923625db..126727b5a64dce585e418531ac7386cd6a7db3bf 100644
--- a/configs/sim/nx/defconfig
+++ b/configs/sim/nx/defconfig
@@ -49,6 +49,12 @@ CONFIG_ARCH_SIM=y
 CONFIG_ARCH_BOARD=sim
 CONFIG_ARCH_BOARD_SIM=y
 
+#
+# Simulated framebuffer configuration
+CONFIG_SIM_FBWIDTH=480
+CONFIG_SIM_FBHEIGHT=240
+CONFIG_SIM_FBBPP=8
+
 #
 # General OS setup
 #
@@ -86,6 +92,7 @@ CONFIG_ARCH_BOARD_SIM=y
 CONFIG_EXAMPLE=nx
 CONFIG_DEBUG=y
 CONFIG_DEBUG_VERBOSE=y
+CONFIG_DEBUG_GRAPHICS=y
 CONFIG_MM_REGIONS=1
 CONFIG_ARCH_LOWPUTC=y
 CONFIG_RR_INTERVAL=0