diff --git a/litespi/modules/generated_modules.py b/litespi/modules/generated_modules.py
index 76a31bd..094930c 100644
--- a/litespi/modules/generated_modules.py
+++ b/litespi/modules/generated_modules.py
@@ -8371,9 +8371,22 @@ class W25Q256JW(SpiNorFlashModule):
         SpiNorFlashOpCodes.PP_1_1_2,
         SpiNorFlashOpCodes.READ_1_1_4,
         SpiNorFlashOpCodes.PP_1_1_4,
+        SpiNorFlashOpCodes.READ_1_1_1_4B,
+        SpiNorFlashOpCodes.READ_1_1_2_4B,
+        SpiNorFlashOpCodes.READ_1_2_2_4B,
+        SpiNorFlashOpCodes.READ_1_1_4_4B,
+        SpiNorFlashOpCodes.READ_1_4_4_4B,
     ]
     dummy_bits = 8
 
+    dummy_cycles = {
+        SpiNorFlashOpCodes.READ_1_1_2_4B : 8,
+        SpiNorFlashOpCodes.READ_1_2_2_4B : 4,
+        SpiNorFlashOpCodes.READ_1_1_4    : 8,
+        SpiNorFlashOpCodes.READ_1_1_4_4B : 32,
+        SpiNorFlashOpCodes.READ_1_4_4    : 6,
+        SpiNorFlashOpCodes.READ_1_4_4_4B : 6,
+    }
 
 class W25Q32(SpiNorFlashModule):