diff --git a/flashchips.c b/flashchips.c
index 62cd2ae..86c766b 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -2316,7 +2316,6 @@
 		.model_id	= P28F001BXB,
 		.total_size	= 128,
 		.page_size	= 128 * 1024, /* 8k + 2x4k + 112k */
-		.feature_bits	= 0,
 		.tested		= TEST_BAD_WRITE,
 		.probe		= probe_jedec,
 		.probe_timing	= TIMING_ZERO,	/* Datasheet has no timing info specified */
@@ -2331,7 +2330,6 @@
 				.block_erase = erase_block_82802ab,
 			},
 		},
-		.unlock		= unlock_82802ab,
 		.write		= NULL,
 		.read		= read_memmapped,
 	},
@@ -2344,7 +2342,6 @@
 		.model_id	= P28F001BXT,
 		.total_size	= 128,
 		.page_size	= 128 * 1024, /* 112k + 2x4k + 8k */
-		.feature_bits	= 0,
 		.tested		= TEST_BAD_WRITE,
 		.probe		= probe_jedec,
 		.probe_timing	= TIMING_ZERO,	/* Datasheet has no timing info specified */
@@ -2359,7 +2356,6 @@
 				.block_erase = erase_block_82802ab,
 			},
 		},
-		.unlock		= unlock_82802ab,
 		.write		= NULL,
 		.read		= read_memmapped,
 	},
@@ -2372,6 +2368,7 @@
 		.model_id	= E_28F004S5,
 		.total_size	= 512,
 		.page_size	= 256,
+		.feature_bits	= FEATURE_REGISTERMAP,
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_82802ab,
 		.probe_timing	= TIMING_ZERO,	/* Datasheet has no timing info specified */