diff --git a/m29f400bt.c b/m29f400bt.c
index c394074..c8ed5d8 100644
--- a/m29f400bt.c
+++ b/m29f400bt.c
@@ -42,8 +42,7 @@
 		//chip_writeb(0xF0, bios);
 		//programmer_delay(5);
 		toggle_ready_jedec(dst);
-		printf
-		    ("Value in the flash at address 0x%lx = %#x, want %#x\n",
+		msg_cerr("Value in the flash at address 0x%lx = %#x, want %#x\n",
 		     (dst - bios), chip_readb(dst), *src);
 		dst++;
 		src++;
@@ -73,7 +72,7 @@
 
 	programmer_delay(10);
 
-	printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2);
+	msg_cdbg("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2);
 
 	if (id1 == flash->manufacture_id && id2 == flash->model_id)
 		return 1;
@@ -97,7 +96,7 @@
 	toggle_ready_jedec(bios);
 
 	if (check_erased_range(flash, 0, flash->total_size * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	return 0;
@@ -121,7 +120,7 @@
 	toggle_ready_jedec(bios);
 
 	if (check_erased_range(flash, start, len)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	return 0;
@@ -130,7 +129,7 @@
 int block_erase_chip_m29f400bt(struct flashchip *flash, unsigned int address, unsigned int blocklen)
 {
 	if ((address != 0) || (blocklen != flash->total_size * 1024)) {
-		fprintf(stderr, "%s called with incorrect arguments\n",
+		msg_cerr("%s called with incorrect arguments\n",
 			__func__);
 		return -1;
 	}
@@ -145,7 +144,7 @@
 	chipaddr bios = flash->virtual_memory;
 
 	//erase_m29f400bt (flash);
-	printf("Programming page:\n ");
+	msg_cinfo("Programming page:\n ");
 	/*********************************
 	*Pages for M29F400BT:
 	* 16	0x7c000		0x7ffff		TOP
@@ -161,47 +160,47 @@
 	* 64	0x10000		0x1ffff
 	* 64	0x00000		0x0ffff		BOTTOM
 	*********************************/
-	printf("total_size/page_size = %d\n", total_size / page_size);
+	msg_cinfo("total_size/page_size = %d\n", total_size / page_size);
 	for (i = 0; i < (total_size / page_size) - 1; i++) {
-		printf("%04d at address: 0x%08x\n", i, i * page_size);
+		msg_cinfo("%04d at address: 0x%08x\n", i, i * page_size);
 		if (block_erase_m29f400bt(flash, i * page_size, page_size)) {
-			fprintf(stderr, "ERASE FAILED!\n");
+			msg_cerr("ERASE FAILED!\n");
 			return -1;
 		}
 		write_page_m29f400bt(bios, buf + i * page_size,
 				     bios + i * page_size, page_size);
-		printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+		msg_cinfo("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
 	}
 
-	printf("%04d at address: 0x%08x\n", 7, 0x70000);
+	msg_cinfo("%04d at address: 0x%08x\n", 7, 0x70000);
 	if (block_erase_m29f400bt(flash, 0x70000, 32 * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	write_page_m29f400bt(bios, buf + 0x70000, bios + 0x70000, 32 * 1024);
 
-	printf("%04d at address: 0x%08x\n", 8, 0x78000);
+	msg_cinfo("%04d at address: 0x%08x\n", 8, 0x78000);
 	if (block_erase_m29f400bt(flash, 0x78000, 8 * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	write_page_m29f400bt(bios, buf + 0x78000, bios + 0x78000, 8 * 1024);
 
-	printf("%04d at address: 0x%08x\n", 9, 0x7a000);
+	msg_cinfo("%04d at address: 0x%08x\n", 9, 0x7a000);
 	if (block_erase_m29f400bt(flash, 0x7a000, 8 * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	write_page_m29f400bt(bios, buf + 0x7a000, bios + 0x7a000, 8 * 1024);
 
-	printf("%04d at address: 0x%08x\n", 10, 0x7c000);
+	msg_cinfo("%04d at address: 0x%08x\n", 10, 0x7c000);
 	if (block_erase_m29f400bt(flash, 0x7c000, 16 * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	write_page_m29f400bt(bios, buf + 0x7c000, bios + 0x7c000, 16 * 1024);
 
-	printf("\n");
+	msg_cinfo("\n");
 
 	return 0;
 }
@@ -210,7 +209,7 @@
 {
 	chipaddr bios = flash->virtual_memory;
 
-	printf("Programming page:\n ");
+	msg_cinfo("Programming page:\n ");
 	/*********************************
 	*Pages for M29F400BT:
 	* 16	0x7c000		0x7ffff		TOP
@@ -226,35 +225,35 @@
 	* 64	0x10000		0x1ffff
 	* 64	0x00000		0x0ffff		BOTTOM
 	*********************************/
-	printf("%04d at address: 0x%08x\n", 7, 0x00000);
+	msg_cinfo("%04d at address: 0x%08x\n", 7, 0x00000);
 	if (block_erase_m29f400bt(flash, 0x00000, 64 * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	write_page_m29f400bt(bios, buf + 0x00000, bios + 0x00000, 64 * 1024);
 
-	printf("%04d at address: 0x%08x\n", 7, 0x10000);
+	msg_cinfo("%04d at address: 0x%08x\n", 7, 0x10000);
 	if (block_erase_m29f400bt(flash, 0x10000, 64 * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	write_page_m29f400bt(bios, buf + 0x10000, bios + 0x10000, 64 * 1024);
 
-	printf("%04d at address: 0x%08x\n", 7, 0x20000);
+	msg_cinfo("%04d at address: 0x%08x\n", 7, 0x20000);
 	if (block_erase_m29f400bt(flash, 0x20000, 64 * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	write_page_m29f400bt(bios, buf + 0x20000, bios + 0x20000, 64 * 1024);
 
-	printf("%04d at address: 0x%08x\n", 7, 0x30000);
+	msg_cinfo("%04d at address: 0x%08x\n", 7, 0x30000);
 	if (block_erase_m29f400bt(flash, 0x30000, 64 * 1024)) {
-		fprintf(stderr, "ERASE FAILED!\n");
+		msg_cerr("ERASE FAILED!\n");
 		return -1;
 	}
 	write_page_m29f400bt(bios, buf + 0x30000, bios + 0x30000, 64 * 1024);
 
-	printf("\n");
+	msg_cinfo("\n");
 
 	return 0;
 }