diff --git a/configs/mx1ads/README.txt b/configs/mx1ads/README.txt
index 59e98c7ba3..aa1df0102f 100644
--- a/configs/mx1ads/README.txt
+++ b/configs/mx1ads/README.txt
@@ -5,7 +5,7 @@ Toolchain
 ^^^^^^^^^
 
   A GNU GCC-based toolchain is assumed.  The files */setenv.sh should
-  be modified to point to the correct path to the SH toolchain (if
+  be modified to point to the correct path to the ARM920T GCC toolchain (if
   different from the default).
 
   If you have no ARM toolchain, one can be downloaded from the NuttX
@@ -22,7 +22,7 @@ Toolchain
 
   4. cd <some-dir>/buildroot
 
-  5. cp configs/arm-defconfig-4.2.4 .config
+  5. cp configs/arm920t-defconfig-4.2.4 .config
 
   6. make oldconfig
 
diff --git a/configs/mx1ads/ostest/Make.defs b/configs/mx1ads/ostest/Make.defs
index 6ceed36b79..489b6cccea 100644
--- a/configs/mx1ads/ostest/Make.defs
+++ b/configs/mx1ads/ostest/Make.defs
@@ -61,9 +61,9 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv4t -mfloat-abi=soft
+  ARCHCPUFLAGS		= -mtune=arm920t -march=armv4t -mfloat-abi=soft
 else
-  ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv4t -msoft-float
+  ARCHCPUFLAGS		= -mapcs-32 -mtune=arm920t -march=armv4t -msoft-float
 endif
 ARCHDEFINES		=
 ARCHINCLUDES		= -I. -isystem $(TOPDIR)/include
diff --git a/configs/ntosd-dm320/README.txt b/configs/ntosd-dm320/README.txt
index 924f2ef02e..1b1c45a4db 100644
--- a/configs/ntosd-dm320/README.txt
+++ b/configs/ntosd-dm320/README.txt
@@ -5,7 +5,7 @@ Toolchain
 ^^^^^^^^^
 
   A GNU GCC-based toolchain is assumed.  The files */setenv.sh should
-  be modified to point to the correct path to the SH toolchain (if
+  be modified to point to the correct path to the ARM926 GCC toolchain (if
   different from the default).
 
   If you have no ARM toolchain, one can be downloaded from the NuttX
@@ -22,7 +22,8 @@ Toolchain
 
   4. cd <some-dir>/buildroot
 
-  5. cp configs/arm-defconfig .config
+  5. cp configs/arm-defconfig .config OR
+     cp configs/arm926t_defconfig-4.2.4 .config
 
   6. make oldconfig