diff -u sys/dev/ata.orig/ata-chipset.c sys/dev/ata/ata-chipset.c
--- sys/dev/ata.orig/ata-chipset.c	Wed Mar 23 06:14:11 2005
+++ sys/dev/ata/ata-chipset.c	Tue Nov 15 21:39:17 2005
@@ -838,6 +838,7 @@
      { ATA_I82801FB,   0, 0, 0x00, ATA_UDMA5, "Intel ICH6" },
      { ATA_I82801FB_S1,0, 0, 0x00, ATA_SA150, "Intel ICH6" },
      { ATA_I82801FB_R1,0, 0, 0x00, ATA_SA150, "Intel ICH6" },
+     { ATA_I82801FBM,  0, 0, 0x00, ATA_SA150, "Intel ICH6-M" },
      { 0, 0, 0, 0, 0, 0}};
     char buffer[64]; 
 
diff -u sys/dev/ata.orig/ata-pci.h sys/dev/ata/ata-pci.h
--- sys/dev/ata.orig/ata-pci.h	Wed Mar 23 06:14:11 2005
+++ sys/dev/ata/ata-pci.h	Tue Nov 15 21:41:07 2005
@@ -127,6 +127,7 @@
 #define ATA_I82801FB		0x266f8086
 #define ATA_I82801FB_S1		0x26518086
 #define ATA_I82801FB_R1		0x26528086
+#define ATA_I82801FBM		0x26538086
 
 #define ATA_ITE_ID		0x1283
 #define ATA_IT8212F		0x82121283