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-rw-r--r--nuttx/arch/sim/src/up_deviceimage.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/nuttx/arch/sim/src/up_deviceimage.c b/nuttx/arch/sim/src/up_deviceimage.c
index 9a28f4edd..70dfc9cab 100644
--- a/nuttx/arch/sim/src/up_deviceimage.c
+++ b/nuttx/arch/sim/src/up_deviceimage.c
@@ -82,7 +82,11 @@
* xxd -g 1 nuttx-test.vfat.gz >some-file
*
* Then manually massaged from the gzip xxd output to zlib format. See
- * http://www.faqs.org/rfcs/rfc1952.html
+ * http://www.faqs.org/rfcs/rfc1952.html. This amounts to:
+ *
+ * Remove all of the leading bytes through the null terminator of the file name
+ * Remove the last 8 bytes
+ * Add 0x08, 0x1d to the beginning.
*/
static const unsigned char g_vfatdata[] =