diff --git a/Chroma-Aeon-74.md b/Chroma-Aeon-74.md
index 1d0b370..3dbcebf 100644
--- a/Chroma-Aeon-74.md
+++ b/Chroma-Aeon-74.md
@@ -78,4 +78,16 @@ SR01234567C:
 00002000  53 52 01 12 35 67 43 00  ff ff ff ff ff 20 03 e0  |SR..1sC...... ..|
 ```
 
+## SPI Flash Memory Map
 
+EEPROM size: 0x10.0000 / 1024k / 1 Megabyte.
+
+Image size:  (800 x 640 x 3 bits/pixel) / 8 bit / byte = 144,000 bytes, rounded up to erase boundary = 147,456 / 0x2.4000.
+
+| Start Adr | End Adr  | Size | Usage |
+|     -     |    -     |   -  |   -   |
+| 0x0.0000  | 0x0.0fff |   4k | OEPL Settings |
+| 0x0.1000  | 0x5.8fff | 352k | OTA FW update |
+| 0x5.9000  | 0x7.cfff | 144k | Image slot 0  |
+| 0x7.d000  | 0xf.bfff | 144k | Image slot 1  |
+| 0xf.a000  | 0xf.ffff |  24k | unused        |